©2020 yamaha motor f150 lf150 corporation

Read this manual carefully before operating thisoutboard motor.

OWNER’S MANUAL

F150LF150

LIT-18626-12-4563P-28199-3M-E0

U63P3ME0.book Friday, December 7, 2018 1:45 PM

©2020 Yamaha Motor Corporation

This productcan expose you to chemicalsincluding engine exhaust, whichis known to the State of Californiato cause cancer, and carbonmonoxide, which is known to theState of California to cause birthdefects or other reproductive harm.For more information go towww.P65Warnings.ca.gov.

WARNING:

Ce produit peut vous exposer à des produits chimiques y compris aux gaz d’échappement, qui sont considérés par l’état de Californie comme étant cancérigènes, et au monoxyde de carbone, qui est considéré par l’état de Californie comme un facteur de malformations congénitales ou d’autres troubles de la reproduction. Pour plus d’informations, rendez-vous sur www.P65Warnings.ca.gov.

ZMU08844

Read this manual carefully before operating this outboard motor. Keep thismanual onboard in a waterproof bag when boating. This manual should staywith the outboard motor if it is sold.

U63P3ME0.book Page 1 Friday, December 7, 2018 1:45 PM


Important manual informationEMU44141

To the ownerThank you for selecting a Yamaha outboardmotor. This Owner’s Manual contains infor-mation needed for proper operation, mainte-nance and care. A thorough understanding ofthese simple instructions will help you obtainmaximum enjoyment from your new Yamaha.If you have any question about the operationor maintenance of your outboard motor,please consult a Yamaha dealer.In this Owner’s Manual particularly importantinformation is distinguished in the followingways.

: This is the safety alert symbol. It is usedto alert you to potential personal injury haz-ards. Obey all safety messages that followthis symbol to avoid possible injury or death.

WARNINGEWM00782

A WARNING indicates a hazardous situa-tion which, if not avoided, could result indeath or serious injury.

NOTICEECM00702

A NOTICE indicates special precautionsthat must be taken to avoid damage to theoutboard motor or other property.

TIP:A TIP provides key information to make pro-cedures easier or clearer.

Yamaha continually seeks advancements inproduct design and quality. Therefore, whilethis manual contains the most current prod-uct information available at the time of print-ing, there may be minor discrepancies

between your machine and this manual. Ifthere is any question concerning this manual,please consult your Yamaha dealer.To ensure long product life, Yamaha recom-mends that you use the product and performthe specified periodic inspections and main-tenance by correctly following the instruc-tions in the owner’s manual. Any damageresulting from neglect of these instructions isnot covered by warranty.Some countries have laws or regulations re-stricting users from taking the product out ofthe country where it was purchased, and itmay be impossible to register the product inthe destination country. Additionally, the war-ranty may not apply in certain regions. Whenplanning to take the product to another coun-try, consult the dealer where the product waspurchased for further information.If you purchased this outboard motor used,see your Yamaha dealer to have it registeredin your name in Yamaha records.

TIP:The F150B, LF150B and the standard acces-sories are used as a base for the explanationsand illustrations in this manual. Thereforesome items may not apply to every model.EMU44152

F150, LF150OWNER’S MANUAL

©2019 by Yamaha Motor Co., Ltd.1st Edition, November 2018

All rights reserved.Any reprinting or unauthorized usewithout the written permission of

Yamaha Motor Co., Ltd.is expressly prohibited.

Printed in Japan



Table of contents

Safety information.............................1Outboard motor safety.................... 1

Propeller ............................................. 1Rotating parts..................................... 1Hot parts ............................................ 1Electric shock..................................... 1Power trim and tilt .............................. 1Engine shut-off cord (lanyard) ............ 1Gasoline ............................................. 2Gasoline exposure and spills ............. 2Carbon monoxide .............................. 2Modifications...................................... 2

Boating safety ................................. 2Alcohol and drugs .............................. 2Personal flotation devices (PFDs) ...... 2People in the water ............................ 2Passengers......................................... 2Overloading........................................ 2Avoid collisions .................................. 3Collisions with floating or submerged

objects ............................................ 3Weather .............................................. 4Accident reporting.............................. 4Boat education and training............... 4Passenger training ............................. 4Boating safety publications................ 4Laws and regulations ......................... 4

Boating organizations ..................... 5Basic boating rules (Rules of the

road) ............................................. 5Steering and sailing rules and sound

signals............................................. 5Rules when encountering vessels...... 6Other special situations...................... 7

General information ........................ 10Identification numbers record ....... 10

Outboard motor serial number......... 10Key number...................................... 10

EC Declaration of Conformity (DoC).......................................... 10

CE Marking ................................... 10Compliance mark label ................. 11Read manuals and labels ............. 12

Warning labels ................................. 12Engine data recording .................. 14

Specifications and requirements ................................... 15

Specifications ............................... 15Installation requirements .............. 16

Boat horsepower rating.................... 16Mounting outboard motor ................ 16

Remote control requirements ....... 16Battery requirements .................... 16

Battery specifications....................... 16Propeller selection ........................ 17

Counter rotation models .................. 18Start-in-gear protection ................ 18Engine oil requirements ................ 18Fuel requirements ......................... 19

Gasoline ........................................... 19Gasoline Additives............................ 20

Muddy or acidic water .................. 21Anti-fouling paint .......................... 21Outboard motor disposal

requirements.............................. 22Emergency equipment.................. 22Emission control information ....... 22

Star labels ........................................ 22

Components.................................... 24Components diagram ................... 24

Optional items .................................. 26Yamaha Security System (Y-COP)... 26Remote control box.......................... 27Remote control lever ........................ 27Neutral interlock trigger.................... 28Neutral throttle lever......................... 28Free accelerator ............................... 28Throttle friction adjuster ................... 29



Table of contents

Engine shut-off cord (lanyard) and clip ................................................ 29

Main switch ...................................... 30Power trim and tilt switch on remote

control........................................... 30Power trim and tilt switch on bottom

cowling.......................................... 31Power trim and tilt switches (twin

binnacle type) ............................... 31Trim tab with anode ......................... 32Tilt support lever for power trim and

tilt model ....................................... 32Cowling lock lever ............................ 33Flushing device ................................ 33Fuel filter........................................... 33

Instruments and indicators ............ 34Digital tachometer ......................... 34

Tachometer ...................................... 34Trim meter ........................................ 34Hour meter ....................................... 34Low oil pressure-alert indicator........ 34Overheat-alert indicator ................... 35

Digital speedometer ...................... 35Speedometer.................................... 35Fuel gauge........................................ 36Trip meter / Clock / Voltmeter.......... 36Fuel level-alert indicator ................... 37Low battery voltage-alert

indicator ........................................ 37Fuel management meter ............... 37

Fuel flow meter................................. 37Fuel consumption meter / Fuel

economy meter / Twin engine speed synchronizer....................... 38

Water separator-alert indicator ........ 406YC Multifunction meter ............... 406Y8 Multifunction meters .............. 43

Engine control system .................... 47Alert system .................................. 47

Overheat alert................................... 47Low oil pressure alert ....................... 48Water separator alert........................ 49

Installation ....................................... 51Installation..................................... 51

Mounting the outboard motor .......... 51

Operation......................................... 53First-time operation ...................... 53

Fill engine oil..................................... 53Breaking in engine............................ 53Getting to know your boat ............... 53

Checks before starting engine...... 53Fuel level .......................................... 54Removing top cowling...................... 54Fuel system ...................................... 54Controls............................................ 55Engine shut-off cord (lanyard) .......... 55Engine oil.......................................... 55Engine .............................................. 56Flushing device ................................ 56Installing top cowling ....................... 56Checking power trim and tilt

system........................................... 57Battery.............................................. 58

Filling fuel ..................................... 59Operating engine .......................... 59

Sending fuel ..................................... 59Starting engine ................................. 60

Checks after starting engine......... 61Cooling water ................................... 61

Warming up engine....................... 62Procedure for warming up engine.... 62

Checks after engine warm up....... 62Shifting ............................................. 62Stop switches................................... 62

Shifting.......................................... 62Stopping boat ............................... 64Stopping engine............................ 64

Procedure......................................... 64Trimming outboard motor............. 64

Adjusting trim angle (Power trim and tilt) ................................................. 65

Adjusting boat trim ........................... 65Tilting up and down ...................... 66

Procedure for tilting up..................... 67



Table of contents

Procedure for tilting down................ 68Shallow water ............................... 69

Cruising in shallow water ................. 69Operating in other conditions ....... 70

Maintenance .................................... 71Transporting and storing outboard

motor.......................................... 71Storing outboard motor.................... 71Conditioning and stabilizing

gasoline......................................... 71Procedure......................................... 72Lubrication ....................................... 73Cleaning and anticorrosion

measures ...................................... 73Flushing cooling water passage....... 73Cleaning the outboard motor ........... 74Checking painted surface of

outboard motor............................. 74Periodic maintenance ................... 75

Replacement parts ........................... 75Maintenance interval guidelines....... 75Maintenance chart 1 ........................ 76Maintenance chart 2 ........................ 78Greasing........................................... 79Inspecting spark plug....................... 80Inspecting idle speed ....................... 81Changing engine oil.......................... 81Replacing the engine oil filter ........... 84Why Yamalube ................................. 85Inspecting wiring and connectors .... 85Checking propeller ........................... 85Removing propeller .......................... 86Installing propeller ............................ 86Changing gear oil ............................. 87Inspecting and replacing anode(s) ... 89Checking battery (for electric start

models) ......................................... 89Connecting the battery..................... 90Disconnecting the battery ................ 91

Trouble Recovery............................ 93Troubleshooting............................ 93Temporary action in emergency ... 96

Impact damage ................................ 96Running single engine (twin

engines)......................................... 96Replacing fuse.................................. 97Power trim and tilt will not

operate.......................................... 97Water separator alert is activated

after leaving port ........................... 98Treatment of submerged motor.... 99

Consumer information (For North America)......................................... 100

YAMAHA FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY............................. 100

IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE U.S.A. OR CANADA................. 102

INDEX............................................. 103



1

Safety informationEMU33623

Outboard motor safetyObserve these precautions at all times.EMU36502

PropellerPeople can be injured or killed if they come incontact with the propeller. The propeller cankeep moving even when the motor is in neu-tral, and sharp edges of the propeller can cuteven when stationary. Stop the engine when a person is in the

water near you.Keep people out of reach of the propeller,

even when the engine is off.EMU40272

Rotating partsHands, feet, hair, jewelry, clothing, personalflotation device (PFD) straps, etc., can be-come entangled with internal rotating parts ofthe engine, resulting in serious injury ordeath.Keep the top cowling in place whenever pos-sible. Do not remove or replace the top cowl-ing with the engine running.Only operate the engine with the top cowlingremoved according to the specific instruc-tions in the manual. Keep hands, feet, hair,jewelry, clothing, PFD straps, etc., away fromany exposed moving parts.EMU33641

Hot partsDuring and after operation, engine parts arehot enough to cause burns. Avoid touchingany parts under the top cowling until the en-gine has cooled.EMU33651

Electric shockDo not touch any electrical parts while start-ing or operating the engine. They can causeshock or electrocution.

EMU33662

Power trim and tiltBody parts can be crushed between the mo-tor and the clamp bracket when the motor istrimmed or tilted. Keep body parts out of thisarea at all times. Be sure no one is in this areabefore operating the power trim and tiltmechanism.The power trim and tilt switches operate evenwhen the main switch is off. Keep peopleaway from the switches whenever workingaround the motor.Never get under the lower unit while it is tilted,even when the tilt support lever is locked. Se-vere injury could occur if the outboard motoraccidentally falls.EMU33672

Engine shut-off cord (lanyard)Attach the engine shut-off cord so that theengine stops if the operator falls overboard orleaves the helm. This prevents the boat fromrunning away under power and leaving peo-ple stranded, or running over people or ob-jects.Always attach the engine shut-off cord to asecure place on your clothing or your arm orleg while operating. Do not remove it to leavethe helm while the boat is moving. Do not at-tach the cord to clothing that could tearloose, or route the cord where it could be-come entangled, preventing it from function-ing.Do not route the cord where it is likely to beaccidentally pulled out. If the cord is pulledduring operation, the engine will shut off andyou will lose most steering control. The boatcould slow rapidly, throwing people and ob-jects forward.



Safety information

2

EMU33811

GasolineGasoline and its vapors are highly flamma-ble and explosive. Always, refuel accordingto the procedure on page 59 to reduce therisk of fire and explosion.EMU33821

Gasoline exposure and spillsTake care not to spill gasoline. If gasolinespills, wipe it up immediately with dry rags.Dispose of rags properly.If any gasoline spills onto your skin, immedi-ately wash with soap and water. Changeclothing if gasoline spills on it.If you swallow gasoline, inhale a lot of gaso-line vapor, or get gasoline in your eyes, getimmediate medical attention. Never siphonfuel by mouth.EMU33901

Carbon monoxideThis product emits exhaust gases which con-tain carbon monoxide, a colorless, odorlessgas which may cause brain damage or deathwhen inhaled. Symptoms include nausea,dizziness, and drowsiness. Keep cockpit andcabin areas well ventilated. Avoid blockingexhaust outlets.EMU33781

ModificationsDo not attempt to modify this outboard mo-tor. Modifications to your outboard motormay reduce safety and reliability, and renderthe outboard unsafe or illegal to use.EMU33742

Boating safetyThis section includes a few of the many im-portant safety precautions that you shouldfollow when boating.EMU33711

Alcohol and drugsNever operate after drinking alcohol or takingdrugs. Intoxication is one of the most com-mon factors contributing to boating fatalities.

EMU40281

Personal flotation devices (PFDs)Have an approved PFD on board for everyoccupant. Yamaha recommends that youmust wear a PFD whenever boating. At a mi-nimum, children and non-swimmers shouldalways wear PFDs, and everyone shouldwear PFDs when there are potentially hazard-ous boating conditions.EMU33732

People in the waterAlways watch carefully for people in the wa-ter, such as swimmers, skiers, or divers,whenever the engine is running. When some-one is in the water near the boat, shift intoneutral and stop the engine.Stay away from swimming areas. Swimmerscan be hard to see.The propeller can keep moving even whenthe motor is in neutral. Stop the engine whena person is in the water near you.EMU33752

PassengersConsult your boat manufacturer’s instruc-tions for details about appropriate passengerlocations in your boat and be sure all passen-gers are positioned properly before acceler-ating and when operating above an idlespeed. Standing or sitting in non-designatedlocations may result in being thrown eitheroverboard or within the boat due to waves,wakes, or sudden changes in speed or direc-tion. Even when people are positioned prop-erly, alert your passengers if you must makeany unusual maneuver. Always avoid jump-ing waves or wakes.EMU33763

OverloadingDo not overload the boat. Consult the boatcapacity plate or boat manufacturer for maxi-mum weight and number of passengers. Besure that weight is properly distributed ac-cording to the boat manufacturer’s instruc-



Safety information

3

tions. Overloading or incorrect weightdistribution can compromise the boat’s han-dling and lead to an accident, capsizing orswamping.EMU33773

Avoid collisionsScan constantly for people, objects, and oth-er boats. Be alert for conditions that limit yourvisibility or block your vision of others.

Operate defensively at safe speeds and keepa safe distance away from people, objects,and other boats.Do not follow directly behind other boats or

waterskiers. Avoid sharp turns or other maneuvers that

make it hard for others to avoid you or un-derstand where you are going.

Avoid areas with submerged objects orshallow water.

Ride within your limits and avoid aggres-sive maneuvers to reduce the risk of loss ofcontrol, ejection, and collision.

Take early action to avoid collisions. Re-member, boats do not have brakes, andstopping the engine or reducing throttlecan reduce the ability to steer. If you are notsure that you can stop in time before hittingan obstacle, apply throttle and turn in an-other direction.

EMU48100

Collisions with floating or submerged objectsIf the outboard motor hits a floating object oran obstacle in the water while cruising, thefollowing could occur: The passengers and any loose equipment

or luggage could be thrown forward due tothe sudden deceleration.

Parts of the outboard motor could comeloose as a result of the impact and could bethrown into the boat.

The boat or outboard motor could be dam-aged as a result of the impact.

When you operate the boat in an area wherethere might be floating objects or obstacles inthe water, be sure to adjust the trim angle ofthe outboard motor, slow down, and operatecarefully. For further information, see page69.If the outboard motor hits a floating object oran obstacle in the water, make sure that thereare no abnormalities with the boat and theoutboard motor. If anything abnormal isfound, return to the nearest harbor at lowspeed and have a Yamaha dealer inspect theoutboard motor.

ZMU06025



Safety information

4

EMU33791

WeatherStay informed about the weather. Checkweather forecasts before boating. Avoidboating in hazardous weather.EMU44161

Accident reportingBoat operators are required by law to file aBoating Accident Report with their boatinglaw enforcement agency if their boat is in-volved in any of the following accidents:1. There is loss of life or probable loss of

life.2. There is personal injury that requires

medical attention beyond first aid.3. There is property damage to boats or

other property over a certain amount.4. There is complete loss of a boat.Contact local law enforcement personnel if areport is necessary.EMU44172

Boat education and trainingFor U.S.A.Operators should take a boating safety cour-se. This may be required in your state. Manyof the organizations listed in the next sectioncan provide information about courses inyour area.You may also want to consider an Internet-based program for basic boater education.The Online Boating Safety Course providedby the BoatU.S. Foundation, is approved bythe National Association of State BoatingLaw Administrators (NASBLA) and recog-nized by the United States Coast Guard.Most, but not all, states accept this course tomeet their minimum requirements. While itcannot replace an in-depth course such asone offered by the U.S. Coast Guard, U.S.Power Squadron, or other organization, thisonline course does provide a general over-view of the basics in boating safety, require-ments, navigation, and operation. Upon

successful completion of the course, the usercan download a certificate of completion im-mediately or, for a small charge, request oneby mail. To take this free course, go to boa-tus.org.For CanadaAll operators of pleasure craft must illustratecompetency by means of a Pleasure CraftOperators Card with the exception of Person-al Water Craft used for rental purposes whichrequire a rental checklist be completed. Plea-sure Craft Operators Cards can be obtainedfollowing the completion of a competencycourse, with an online option. Details can befound on Transport Canada’s website.www.tc.gc.caEMU33881

Passenger trainingMake sure at least one other passenger istrained to operate the boat in the event of anemergency.EMU33891

Boating safety publicationsBe informed about boating safety. Additionalpublications and information can be obtainedfrom many boating organizations.EMU33592

Laws and regulationsKnow the marine laws and regulations whereyou will be boating—and obey them. Severalsets of rules prevail according to geographiclocation, but all are basically the same as theInternational Rules of the Road. The rulespresented in the following section are con-densed—and have been provided for yourconvenience only.Contact the U.S. Coast Guard, the NationalAssociation of State Boating Law Administra-tors, or your local Power Squadron for a com-plete set of rules governing the waters inwhich you will be using your boat.



Safety information

5

EMU44741

Boating organizationsThe following organizations provide boatingsafety training and information about boatingsafety and laws.

In the U.S.A.United States Coast GuardConsumer Affairs Staff (G-BC)Office of Boating, Public, and Consumer Af-fairsU.S. Coast Guard HeadquartersWashington, D.C. 20593-0001http://www.uscgboating.org/

United States Power Squadrons1-888-FOR-USPS (1-888-367-8777)http://www.usps.org/

Boat Owners Association of The UnitedStates1-800-336-BOAT (1-800-336-2628)http://www.boatus.com/

National Association of State Boating LawAdministrators (NASBLA)1500 Leestown Road, Suite 330Lexington, KY 40511 859-225-9497http://www.nasbla.org/

National Marine Manufacturers Associa-tion (NMMA)200 East Randolph DriveSuite 5100Chicago, IL 60601http://www.nmma.org/

Marine Retailers Association of America155 N. Michigan Ave.Chicago, IL 60304http://www.mraa.com/

In CanadaNational Marine Manufacturers Associa-tion Canada14 McEwan DriveSuite 8Bolton, ONL7E 1H1http://www.nmma.org/

In AustraliaBoating Industry Association of Australiahttp://www.biaa.com.au/

In New ZealandNZ Marine Industry Associationhttp://www.nzmarine.com/

EMU33692

Basic boating rules (Rules of the road)

Just as there are rules that apply when youare driving on streets and highways, there arewaterway rules that apply when you are driv-ing your boat. These rules are used interna-tionally. (For U.S.A.: and are also enforced bythe United States Coast Guard and localagencies.) You should be aware of theserules, and follow them whenever you encoun-ter another vessel on the water.EMU33702

Steering and sailing rules and sound signalsWhenever two vessels on the water meet oneanother, one vessel has the right-of-way; it iscalled the “stand-on” vessel. The vessel thatdoes not have the right-of-way is called the“give-way” or “burdened” vessel. These rulesdetermine which vessel has the right-of-way,and what each vessel should do.



Safety information

6

Stand-on vesselThe vessel with the right-of-way has the dutyto continue its course and speed, except toavoid an immediate collision. When youmaintain your direction and speed, the othervessel will be able to determine how best toavoid you.

Give-way vesselThe vessel that does not have the right-of-way has the duty to take positive and timelyaction to stay out of the way of the Stand-Onvessel. Normally, you should not cross infront of the vessel with the right-of-way. Youshould slow down or change directions brief-ly and pass behind the other vessel. Youshould always move in such a way that theoperator of the other vessel can see what youare doing.“The general prudential rule”This rule is called Rule 2 in the InternationalRules and says,“In obeying and construing these rules dueregard shall be had to all dangers of naviga-tion and collision, and to any special circum-stances, which may render a departure fromthe above rules necessary in order to avoidimmediate danger.”In other words, follow the standard rules ex-cept when a collision will occur unless bothvessels try to avoid each other. If that is thecase, both vessels become “Give-Way” ves-sels.EMU25524

Rules when encountering vesselsThere are three main situations that you mayencounter with other vessels which couldlead to a collision unless the Steering Rulesare followed:Meeting: (you are approaching another ves-sel head-on)

Crossing: (you are traveling across the othervessel’s path)Overtaking: (you are passing or beingpassed by another vessel)In the following illustration, your boat is in thecenter. You should give the right-of-way toany vessels shown in white area (you are theGive-Way vessel). Any vessels in the shadedarea must yield to you (they are the Give-Wayvessels). Both you and the meeting vesselmust alter course to avoid each other.

MeetingIf you are meeting another power vesselhead-on, and are close enough to run the riskof collision, neither of you has the right-of-way. Both of you should alter course to avoidan accident. You should keep the other ves-sel on your port (left) side. This rule doesn’tapply if both of you will clear one another ifyou continue on your set course and speed.



Safety information

7

CrossingWhen two power driven vessels are crossingeach other’s path close enough to run the riskof collision, the vessel which has the other onthe starboard (right) side must keep out of theway of the other. If the other vessel is on yourright, you must keep out of its way; you arethe Give-Way vessel. If the other vessel is onyour port (left) side, remember that youshould maintain course and direction, provid-ed the other vessel gives you the right-of-wayas it should.

OvertakingIf you are passing another vessel, you are the“Give-Way” vessel. This means that the othervessel is expected to maintain its course andspeed. You must stay out of its way until youare clear of it. Likewise, if another vessel ispassing you, you should maintain your speedand direction so that the other vessel cansteer itself around you.EMU25532

Other special situationsThere are three other rules you should beaware of when driving your boat around othervessels.Narrow channels and bendsWhen navigating in narrow channels, youshould keep to the right when it is safe andpractical to do so. If the operator of a power-driven vessel is preparing to go around abend that may obstruct the view of other wa-

ter vessels, the operator should sound a pro-longed blast on the whistle (4 to 6 seconds).If another vessel is around the bend, it tooshould sound the whistle. Even if no reply isheard, however, the vessel should still pro-ceed around the bend with caution. If younavigate such waters with your boat, you willneed to carry a portable air horn, availablefrom local marine supply stores.Fishing vessel right-of-wayAll vessels that are fishing with nets, lines ortrawls are considered to be “fishing vessels”under the International Rules. Vessels withtrolling lines are not considered fishing ves-sels. Fishing vessels have the right-of-wayregardless of position. Fishing vessels can-not, however, impede the passage of othervessels in narrow channels.Sailing vessel right-of-waySailing vessels should normally be given theright-of-way. The exceptions to this are:1. When the sailing vessel is overtaking the

power-driven vessel, the power-drivenvessel has the right-of-way.

2. Sailing vessels should keep clear of anyfishing vessel.

3. In a narrow channel, a sailing vesselshould not hamper the safe passage of apower-driven vessel that can navigateonly in such a channel.

Reading buoys and other markersThe waters of the United States are markedfor safe navigation by the lateral system ofbuoyage. Simply put, buoys and markershave an arrangement of shapes, colors, num-bers and lights to show which side of thebuoy a boater should pass on when navigat-ing in a particular direction. The markings onthese buoys are oriented from the perspec-tive of being entered from seaward (the boat-er is going towards the port). This means that



Safety information

8

red buoys are passed on the starboard (right)side when proceeding from open water intoport, and black buoys are to port (left) side.When navigating out of port, your positionwith respect to the buoys should be reversed;red buoys should be to port and black buoysto starboard.Many bodies of water used by boaters areentirely within the boundaries of a particularstate. The Uniform State Waterway MarkingSystem has been devised for these waters.This system uses buoys and signs with dis-tinctive shapes and colors to show regulatoryor advisory information. These markers arewhite with black letters and orange boarders.They signify speed zones, restricted areas,danger areas, and general information.Remember, markings may vary by geograph-ic location. Always consult local boating au-thorities before driving your boat in unfamiliarwaters.



Safety information

9

ZMU01708



General information

10

EMU25172

Identification numbers recordEMU25186

Outboard motor serial numberThe outboard motor serial number isstamped on the label attached to the portside of the clamp bracket.Record your outboard motor serial number inthe spaces provided to assist you in orderingspare parts from your Yamaha dealer or forreference in case your outboard motor is sto-len.

EMU25192

Key numberIf a main key switch is equipped with the mo-tor, the key identification number is stampedon your key as shown in the illustration. Re-cord this number in the space provided forreference in case you need a new key.

EMU38982

EC Declaration of Conformity (DoC)

This declaration is included with outboardmotors that conform to European regula-tions.This outboard motor conforms to certain por-tions of the European Parliament directive re-lating to machinery.Each conformed outboard motor accompa-nied with EC DoC.EC DoC contains the fol-lowing information;Name of engine manufacturerModel name Product code of model (Approved model

code)Code of conformed directivesEMU38995

CE MarkingThis label is affixed to outboard motors thatconform to European regulations.

1. Outboard motor serial number location

1. Serial number2. Model name3. Motor transom height4. Approved model code

1

ZMU08223

34 12

ZMU01692

1. Key number

1

ZMU01694



General information

11

Outboard motors affixed with this “CE” mark-ing conform with the directives of;2006/42/EC, 94/25/EC - 2003/44/EC,2014/30/EU, and 2004/108/EC, 2013/53/EU.

EMU46133

Compliance mark labelEngines affixed with this label conform to theregulations for each country.This label is affixed to the clamp bracket orswivel bracket.

Regulatory Compliance Mark (RCM)Engines affixed with this mark conform tocertain portion(s) of the Australian RadioCommunications Act.

ICES-002 Compliance LabelEngines affixed with this mark meet all re-quirements of the Canadian InterferenceCausing Equipment Regulations.

1. CE marking location

1

ZMU08264

ZMU06040

1. Compliance mark label location

1. Regulatory Compliance Mark (RCM)

1. ICES-002 Compliance Label

1

ZMU08266

ZMU081901

ZMU08191

1



General information

12

EMU33524

Read manuals and labelsBefore operating or working on this outboard motor:Read this manual.Read any manuals supplied with the boat.Read all labels on the outboard motor and the boat.If you need any additional information, contact your Yamaha dealer.EMU33836

Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements.

23

1

ZMU06189



General information

13

EMU34652

Contents of labelsThe above warning labels mean as follows.1

WARNINGEWM01682

Keep hands, hair, and clothing awayfrom rotating parts while the engine isrunning.

Do not touch or remove electrical partswhen starting or during operation.

2

WARNINGEWM01672

Read Owner’s Manuals and labels.Wear an approved personal flotation de-

vice (PFD).

Attach engine shut-off cord (lanyard) toyour PFD, arm, or leg so the enginestops if you accidentally leave the helm,which could prevent a runaway boat.

EMU33851

Other labels

6EE-G2794-40

6EE-H1994-40

1 2

6EE-G2794-50

6EE-H1994-50

ZMU06191

3

ZMU05710



General information

14

EMU35133

SymbolsThe following symbols mean as follows.

Notice/Warning

Read Owner’s Manual

Hazard caused by continuous rotation

Electrical hazard

EMU48010

Engine data recordingThis model’s ECM stores certain engine datato assist in the diagnosis of malfunctions andfor research, statistical analysis and develop-ment purposes.Although the sensors and recorded data willvary by model, the main data points are: Engine status and engine performance

dataThis data will be uploaded only when a spe-cial Yamaha diagnostic tool is attached to theengine, such as when maintenance checks orservice procedures are performed.Yamaha will not disclose this data to a thirdparty except in the following cases. In addi-tion, Yamaha may provide engine data to acontractor in order to outsource services re-lated to the handling of the engine data. Evenin this case, Yamaha will require the contrac-tor to properly handle the engine data weprovided and Yamaha will appropriatelymanage the data.With the consent of the boat ownerWhere obligated by law For use by Yamaha in litigation For general Yamaha-conducted research

purposes when the data is not related to anindividual engine or owner

ZMU05696

ZMU05664

ZMU05665

ZMU05666



Specifications and requirements

15

EMU40501

SpecificationsTIP:“(SUS)” indicates that the specification is forthe outboard motor when it is equipped witha stainless steel propeller.EMU2821Z

Dimension and weight:Overall length:

920 mm (36.2 in)Overall width:

548 mm (21.6 in)Overall height L:

1742 mm (68.6 in) (F150B)Overall height X:

1869 mm (73.6 in)Motor transom height L:

516 mm (20.3 in) (F150B)Motor transom height X:

643 mm (25.3 in)Dry weight (SUS) L:

222 kg (489 lb) (F150B)Dry weight (SUS) X:

227 kg (500 lb)Performance:

Full throttle operating range:5000–6000 r/min

Rated power:110.3 kW (150 HP)

Idle speed (in neutral):650–750 r/min

Power unit:Type:

4-stroke DOHC L4 16 valvesTotal displacement:

2670 cm³ (162.9 c.i.)Bore × stroke:

94.0 × 96.2 mm (3.70 × 3.79 in)Ignition system:

TCI

Spark plug (NGK):LFR5A-11

Spark plug gap:1.0–1.1 mm (0.039–0.043 in)

Steering system:Remote steering

Starting system:Electric starter

Starting carburetion system:Fuel injection

Valve clearance IN (cold engine):0.17–0.24 mm (0.0067–0.0094 in)

Valve clearance EX (cold engine):0.31–0.38 mm (0.0122–0.0150 in)

Battery rating (CCA/SAE):512–1150 A

Battery rating (MCA/ABYC):675–1370 A

Battery rating (RC/SAE):124 minutes

Battery rating (CCA/EN):510–1080 A

Battery rating (20HR/IEC):80 Ah

Maximum generator output:35 A

Lower unit:Gear shift positions:

Forward-neutral-reverseGear ratio:

2.00 (28/14)Trim and tilt system:

Power trim and tiltPropeller mark:

M/T (F150B)ML/TL (LF150B)

Fuel and oil:Recommended fuel:

Regular unleaded gasolineMin. pump octane number (PON):

86




16

Min. research octane number (RON):90

Recommended engine oil:YAMALUBE 4M FC-W or 4-stroke outboard motor oil

Recommended engine oil grade 1:SAE 10W-30/10W-40/5W-30 API SE/SF/SG/SH/SJ/SL

Engine oil quantity (without oil filter replacement):

4.3 L (4.55 US qt, 3.78 Imp.qt)Engine oil quantity (with oil filter replacement):

4.5 L (4.76 US qt, 3.96 Imp.qt)Lubrication system:

Wet sumpRecommended gear oil:

Yamalube Marine Gearcase Lube HD or Hypoid gear oil

Recommended gear oil grade:SAE 90 API GL-4 / SAE 80W API GL-5 / SAE 90 API GL-5

Gear oil quantity:0.980 L (1.036 US qt, 0.862 Imp.qt)

EMU33556

Installation requirementsEMU33566

Boat horsepower rating

WARNINGEWM01561

Overpowering a boat can cause severe in-stability.

Before installing the outboard motor(s), con-firm that the total horsepower of your out-board motor(s) does not exceed the boat’smaximum horsepower rating. See the boat’scapacity plate or contact the manufacturer.

EMU40491

Mounting outboard motor

WARNINGEWM02501

Improper mounting of the outboard mo-tor could result in hazardous conditionssuch as poor handling, loss of control,or fire hazards.

Because the outboard motor is veryheavy, special equipment and training isrequired to mount it safely.

Your dealer or other person experienced inproper rigging should mount the outboardmotor using correct equipment and completerigging instructions. For further information,see page 51.EMU33582

Remote control requirements

WARNINGEWM01581

If the engine starts in gear, the boat canmove suddenly and unexpectedly, pos-sibly causing a collision or throwingpassengers overboard.

If the engine ever starts in gear, thestart-in-gear protection device is notworking correctly and you should dis-continue using the outboard. Contactyour Yamaha dealer.

The remote control unit must be equippedwith a start-in-gear protection device(s). Thisdevice prevents the engine from starting un-less it is in neutral.EMU25695

Battery requirementsEMU44724

Battery specificationsStandard lead-acid, AGM, gel-cell, and main-tenance-free batteries are permitted. Use afully charged battery that meets the following




17

specifications. The battery is an importantcomponent necessary to obtain sure enginestarting and to maintain engine performance.The engine may not start if the battery voltageis too low.For North AmericaIt is necessary to meet only two of the threespecifications (CCA, MCA, and RC) in one ofthe following combinations:CCA/SAE and RCMCA/ABYC and RC

For OceaniaIt is necessary to meet the following specifi-cations.

NOTICEECM01064

Do not use a battery that does not meetthe specified capacity. If a battery thatdoes not meet specifications is used,the electric system could perform poor-ly or be overloaded, causing electricsystem damage.

Do not use a battery which exceeds themaximum CCA rating. If the batteriesare used in parallel circuit, use new bat-teries of the same type and make surethat the total battery rating never ex-ceeds the maximum CCA rating.

EMU36293

Mounting batteryMount the battery holder securely in a dry,well-ventilated, vibration-free location in theboat. WARNING! Do not put flammableitems, or loose heavy or metal objects inthe same compartment as the battery.Fire, explosion or sparks could result.[EWM01821]

Battery cableThe battery cable size and length are critical.Consult your Yamaha dealer about the bat-tery cable size and length.EMU36303

Multiple batteriesTo connect multiple batteries, such as formultiple engine configurations or for an ac-cessory battery, consult your Yamaha dealerabout battery selection and correct wiring.Battery isolatorYour outboard motor is capable of chargingan accessory battery separate from the start-ing battery using an optional isolator lead.Contact your Yamaha dealer for installationof an optional isolator lead with over-currentprotection.EMU41604

Propeller selectionNext to selecting an outboard motor, select-ing the right propeller is one of the most im-portant purchasing decisions a boater canmake. The type, size, and design of your pro-peller have a direct impact on acceleration,top speed, fuel economy, and even enginelife. Yamaha designs and manufactures pro-pellers for every Yamaha outboard motor andevery application.Your Yamaha dealer can help you select theright propeller for your boating needs. Selecta propeller that will allow the engine to reachthe middle or upper half of the operating

Battery rating (CCA/SAE):512–1150 A

Battery rating (MCA/ABYC):675–1370 A

Battery rating (RC/SAE):124 minutes

Battery rating (CCA/EN):510–1080 A

Battery rating (20HR/IEC):80 Ah




18

range at full throttle with the maximum boat-load. Generally, select a larger pitch propellerfor a smaller operating load and a smallerpitch propeller for a heavier load. If you carryloads that vary widely, select the propellerthat lets the engine run in the proper range foryour maximum load but remember that youmay need to reduce your throttle setting tostay within the recommended engine speedrange when carrying lighter loads.Yamaha recommends to use a propeller suit-able for the “Shift Dampener System (SDS)”.For further information, consult your Yamahadealer.To check the propeller, see page 85.Propeller example

EMU36313

Counter rotation modelsStandard outboard motors rotate clockwise.Counter rotation models rotate counterclock-wise and are typically used in multiple motorsetups.On counter rotation models, be sure to use apropeller intended for counterclockwise rota-tion. These propellers are identified with the

letter “L” after the size indication on the pro-peller. WARNING! Never use a standardpropeller with a counter rotation motor, ora counter rotation propeller with a stan-dard motor. Otherwise the boat could goin the direction opposite of that expected(for example, reverse instead of forward),which could lead to an accident. [EWM01811]

For instructions on propeller removal and ins-tallation, see page 86.EMU25771

Start-in-gear protectionYamaha outboard motors or Yamaha-ap-proved remote control units are equippedwith start-in-gear protection device(s). Thisfeature permits the engine to be started onlywhen it is in neutral. Always select neutral be-fore starting the engine.EMU41953

Engine oil requirementsSelect an oil grade according to the averagetemperatures in the area where the outboardmotor will be used.

If oil grades listed under Recommended en-gine oil grade 1 are not available, select an al-ternative oil grade listed underRecommended engine oil grade 2.

1. Propeller diameter in inches2. Propeller pitch in inches3. Type of propeller (propeller mark)

3 1

2-x

1 2 3

A

A B

A

B

ZMU08845

Recommended engine oil:YAMALUBE 4M FC-W or 4-stroke outboard motor oil

Recommended engine oil grade 1:SAE 10W-30/10W-40/5W-30 API SE/SF/SG/SH/SJ/SL

Recommended engine oil grade 2:SAE 15W-40/20W-40/20W-50 API SH/SJ/SLEngine oil quantity (without oil filter replacement):

4.3 L (4.55 US qt, 3.78 Imp.qt)Engine oil quantity (with oil filter re-placement):

4.5 L (4.76 US qt, 3.96 Imp.qt)




19

Recommended engine oil grade 1

Recommended engine oil grade 2

EMU36361

Fuel requirementsEMU44791

GasolineUse a good quality gasoline that meets theminimum octane requirement. If knocking orpinging occurs, use a different brand of gas-oline or premium unleaded fuel. Yamaha rec-ommends that you use alcohol-free gasoline(see Gasoline with Ethanol) whenever possi-ble.The use of a poor quality gasoline may resultin starting and running problems. If you en-counter drivability problems, which you sus-pect could be related to the fuel you areusing, Yamaha recommends that you switchto a recognized high quality brand of gaso-line, such as a gasoline that is advertised asTop Tier Detergent Gasoline. (North Americaonly) NOTICE: Failure to comply with these

recommendations may also result in un-scheduled maintenance, fuel system dam-age, and internal engine damage. [ECM04480]

For North America

For Oceania

NOTICEECM01982

Do not use leaded gasoline. Leadedgasoline can seriously damage the en-gine.

Avoid getting water and contaminants inthe fuel tank. Contaminated fuel cancause poor performance or engine dam-age. Use only fresh gasoline that hasbeen stored in clean containers.

Gasoline with EthanolTwo types of gasoline are commonly avail-able in the U.S.A., Canada, Australia andNew Zealand for use in automobiles andboats: conventional gasoline without Ethanoland gasoline with Ethanol, which is typicallyreferred to as E10 gasoline. According to fed-eral regulations, E10 gasoline may contain upto 10% Ethanol.A high quality gasoline without Ethanol is thepreferred fuel for your Yamaha outboard mo-tor. However, if gasoline with Ethanol is theonly fuel available in your area, your Yamahaoutboard motor is calibrated to run properly

ZMU06854

122˚F

50˚C

104

40

86

30

68

SAE API

SESFSGSHSJSL

20

50

10

32

0

14

-10

-4

-20

10W–30

10W–40

5W–30

ZMU06855

122˚F

50˚C

104

40

86

30

68

SAE API

SHSJSL

20

50

10

32

0

14

-10

-4

-20

15W–40

20W–40

20W–50

Recommended fuel:Regular unleaded gasoline

Min. pump octane number (PON):86

Recommended fuel:Regular unleaded gasoline

Min. research octane number (RON):90




20

on fresh E10 gasoline that meets the mini-mum octane requirement specified for thismodel.

NOTICEECM02402

Never use a gasoline for your outboardmotor that contains more than 10% Etha-nol, such as E15 which contains 15% Eth-anol or E85 which contains 85% Ethanol,or gasoline containing any amount ofMethanol. These fuels can cause startingand running problems, as well as seriousfuel system and internal engine damage.

Gasoline containing ethanol has severalproperties that may cause boat fuel systemproblems. Ethanol is a strong solvent (cleaning agent)

that can clean gum and varnish depositsfrom a boat’s fuel system, particularly inolder boats, as well as tanks and pipesused in gasoline distribution. These re-leased deposits contaminate the fuel andcan cause problems, such as clogged fuelfilters, carburetors, or fuel injectors, whichcould result in engine damage.

Ethanol may dissolve resins used in theconstruction of fiberglass fuel tanks. Thedissolved resins contaminate the fuel andcan cause problems, such as clogged fuelfilters, carburetors, or fuel injectors, whichcould result in engine damage.

Ethanol is hygroscopic (has a strong at-traction to water). Therefore, any water thatinadvertently enters the fuel system, in-cluding moisture that is absorbed from theair, will mix with the ethanol in the gasoline.If the amount of water is excessive, the eth-anol and water mixture will separate fromthe gasoline in a layer at the bottom of the

fuel tank. This ethanol and water mixture isvery corrosive to aluminum fuel tanks andfuel system components.

The usable life span of E10 gasoline maybe shorter than the normal length of off-season boat storage, causing starting andrunning problems related to stale fuel.

For more information on using fuel containingethanol, visit: http://www.yamaha-mo-tor.comGasoline FiltrationYamaha outboard motors are equipped withinternal fuel filters. However, excessive wateror debris entering your engine’s fuel systemcould prematurely clog the internal filters,causing starting and running problems, fuelsystem damage, and internal engine dam-age. Therefore, it is recommended that an ex-ternal 10-micron water-separating fuel filterbe installed on your boat and serviced fre-quently. Consult your authorized Yamahadealer for a 10-micron filter that meets yourengine’s requirements.EMU41342

Gasoline AdditivesGasoline blends change to meet automobileemission regulations and economic condi-tions. Additives, added by gasoline distribu-tors, necessary for proper automobile engineoperation and durability, may not be suffi-cient for typical boat applications. Intakevalve and combustion chamber depositsmay accumulate in boat engines more rapidlythan encountered in automotive use. In addi-tion, gasoline used for boating will typicallyage longer between refills than gasoline usedin automobiles, resulting in stale and unus-able gasoline that may cause starting andrunning problems, fuel system damage, andinternal engine damage.




21

Yamaha recommends the use of twoYamalube gasoline additives to reduce inter-nal deposits and extend the storage life ofgasoline. Continuous use of Yamalube RingFree Fuel Additive Plus reduces harmful inter-nal deposits. Yamalube Fuel Stabilizer &Conditioner Plus added to fresh gasoline willhelp protect the fuel system from varnishingwhile helping to keep the gasoline’s octanelevel from decreasing excessively duringstorage. Other additives may also be avail-able on the market that may have varying de-grees of effectiveness. Consult your Yamahadealer concerning what may work best forthe locally available gasoline and environ-mental conditions.EMU36881

Muddy or acidic waterYamaha strongly recommends that you haveyour dealer install the optional chromium-plated water pump kit if you use the outboardmotor in muddy or acidic water conditions.However, depending on the model it mightnot be required.EMU41354

Anti-fouling paintA clean hull is required to maintain yourboat’s performance. Boats moored in the wa-ter should be protected from marine growth(barnacles, mussels, and marine plants). Ifapproved by regulations for your area, thebottom of the hull can be coated with an anti-fouling paint to inhibit marine growth.Anti-fouling paints specifically formulated foruse on aluminum may be applied to the out-board motor. The original Yamaha paint sur-face may be scuffed lightly before applyinganti-fouling paint, but do not remove the orig-inal paint. Removal of the original paint will in-crease the rate of corrosion.

NOTICEECM04821

Anti-fouling paint for fiberglass andwood may contain materials, such ascopper, graphite, and tin, that can causecorrosion if applied to aluminum boatsand outboard motor components. Neverapply these types of paint to your out-board motor because rapid corrosiondamage could occur.

Anti-fouling paint can increase drag(friction) between the boat and the wa-ter, and possibly affect performance. Ifthe effects are too great, reducing pro-peller pitch may be necessary.

Sacrificial anodes are attached to the out-board motor to provide corrosion protectionand must never be painted.Sacrificial anodes made from a different ma-terial may be necessary for maximum corro-sion protection due to your local waterconditions. Please consult your Yamahadealer.

NOTICEECM02421

Painted sacrificial anodes will not providecorrosion protection.




22

EMU40302

Outboard motor disposal re-quirements

Never illegally discard (dump) the outboardmotor. Yamaha recommends consulting thedealer about discarding the outboard motor.EMU36353

Emergency equipmentKeep the following items onboard in casethere is trouble with the outboard motor. A tool kit with assorted screwdrivers, pliers,

wrenches (including metric sizes), andelectrical tape.

Waterproof flashlight with extra batteries. An extra engine shut-off cord (lanyard) with

clip. Spare parts, such as an extra set of spark

plugs.Consult your Yamaha dealer for details.EMU25223

Emission control information EMU25232

This engine conforms to U.S. EnvironmentalProtection Agency (EPA) regulations for mari-ne SI engines. See the label affixed to yourengine for details.EMU31563

Approval label of emission control certifi-cateThis label is attached at the location shown.New Technology; (4-stroke) MFI

EMU25275

Star labelsYour outboard motor is labeled with a Califor-nia Air Resources Board (CARB) star label.See below for a description of your particularlabel.

EMU40331

One Star—Low EmissionThe one-star label identifies engines thatmeet the Air Resources Board’s PersonalWatercraft and Outboard marine engine 2001exhaust emission standards. Engines meet-ing these standards have 75% lower emis-sions than conventional carbureted two-stroke engines. These engines are equivalentto the U.S. EPA’s 2006 standards for marineengines.

1. Approval label location

1

ZMU08272

1. Star label location

EMISSION CONTROL INFORMATIONTHIS ENGINE CONFORMS TO CALIFORNIA EXHAUSTAND U.S. EPA EXHAUST AND EVAP REGULATIONS FOR SIMARINE ENGINES. REFER TO OWNER’S MANUAL FORMAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.FAMILY : DISPLACEMENT : litersMAX POWER : kW EPA/CA FEL : HC+NOx ,CO g/kW-hEPA CERTIFIED EVAP COMPONENTS :

YAMAHA MOTOR CO.,LTD.

ZMU06894

1

ZMU07737




23

EMU40341

Two Stars—Very Low EmissionThe two-star label identifies engines thatmeet the Air Resources Board’s PersonalWatercraft and Outboard marine engine 2004exhaust emission standards. Engines meet-ing these standards have 20% lower emis-sions than One Star-Low-Emission engines.

EMU40351

Three Stars—Ultra Low EmissionThe three-star label identifies engines thatmeet the Air Resources Board’s PersonalWatercraft and Outboard marine engine 2008exhaust emission standards or the Sterndriveand Inboard marine engine 2003-2008 ex-haust emission standards. Engines meetingthese standards have 65% lower emissionsthan One Star-Low-Emission engines.

EMU33862

Four Stars—Super Ultra Low EmissionThe four-star label identifies engines thatmeet the Air Resources Board’s Sterndriveand Inboard marine engine 2009 exhaustemission standards. Personal Watercraft andOutboard marine engines may also complywith these standards. Engines meeting thesestandards have 90% lower emissions thanOne Star-Low-Emission engines.

ZMU01702

ZMU01703

ZMU01704

ZMU05663



Components

24

EMU46722

Components diagramTIP:* May not be exactly as shown; also may not be included as standard equipment on all models(order from dealer).

1

2

4

3

6 7

9

10

2

58

11

ZMU08232

1. Top cowling2. Cowling lock lever3. Clamp bracket4. Power trim and tilt unit5. Anode6. Cooling water inlet7. Propeller*8. Trim tab (anode)9. Anti-cavitation plate10.Flushing device11.Fuse box



Components

25

1

2

3

4 5

7

6

9

8

ZMU08233

1. Cowling lock lever2. Oil dipstick3. Cooling water pilot hole4. Cooling water inlet5. Gear oil drain screw6. Oil level plug7. Power trim and tilt switch8. Fuel filter9. Oil filler cap



Components

26

EMU46731

Optional itemsThe following items are available from your Yamaha dealer. For details, consult your Yamahadealer.

EMU46751

Yamaha Security System (Y-COP)

NOTICEECM02461

The Yamaha Security System is sold inconformity with the relevant laws and reg-ulations regarding radio wave transmis-sion. Therefore, if this product is usedoutside the country where it was sold, itmay violate the laws or regulations re-garding radio wave transmission in thecountry it is used in. For details, consultyour Yamaha dealer.

TRIP TIME BATT

Km/hknotmph

kmmile

SPEED

YAMAHA

set mode

SET MODE SET MODE

6

2 4 51 3

10987

11 12

ZMU08523

1. Remote control box (side mount type)2. Remote control box (binnacle mount type)3. Remote control box (binnacle mount type)4. Switch panel (for use with binnacle type)5. Switch panel (for use with binnacle type)6. Digital tachometer7. Digital speedometer8. Fuel management meter9. 6Y8 Multifunction tachometer10.6Y8 Multifunction speed & fuel meter11.6YC Multifunction meter12.Yamaha Security System (Y-COP)



Components

27

The Yamaha Security System, which pro-tects against theft, consists of the receiverand remote control transmitters. The YamahaSecurity System is available from yourYamaha dealer. For details, consult yourYamaha dealer.

The engine cannot be started if the securitysystem is in the lock mode. The engine canbe started only in the unlock mode. For moreinformation, see the installation and owner’smanual included with the security system.

TIP:The security system cannot be used withquad engine applications or Helm Master®.EMU26182

Remote control boxThe remote control lever actuates both theshifter and the throttle. The electrical switch-es are mounted on the remote control box. EMU26191

Remote control leverMoving the lever forward from the neutral po-sition engages forward gear. Pulling the leverback from neutral engages reverse. The en-gine will continue to run at idle until the leveris moved about 35° (a detent can be felt).Moving the lever farther opens the throttle,and the engine will begin to accelerate.

1. Remote control transmitter2. Receiver

21

ZMU08527

1. Power trim and tilt switch2. Remote control lever3. Neutral interlock trigger4. Neutral throttle lever5. Main switch6. Engine shut-off switch7. Throttle friction adjuster

1. Remote control lever2. Power trim and tilt switch3. Free accelerator4. Throttle friction adjuster

12 3

5

4

6

7

ZMU01723

23

21

4

ZMU04569



Components

28

EMU26202

Neutral interlock triggerTo shift out of neutral, first pull the neutral in-terlock trigger up.

EMU26213

Neutral throttle leverTo open the throttle without shifting into ei-ther forward or reverse, put the remote con-trol lever in the neutral position and lift theneutral throttle lever.

TIP:The neutral throttle lever will operate onlywhen the remote control lever is in neutral.The remote control lever will operate onlywhen the neutral throttle lever is in the closedposition.EMU26234

Free acceleratorTo open the throttle without shifting into ei-ther forward or reverse, push the free accel-erator button and move the remote controllever.

1. Neutral “ ”2. Forward “ ”3. Reverse “ ”4. Shift5. Fully closed6. Throttle7. Fully open

1. Neutral “ ”2. Forward “ ”3. Reverse “ ”4. Shift5. Fully closed6. Throttle7. Fully open

12 34 4

556

6 7

7

FN

R

ZMU01725

N1F

7

6

2R

34 4

65

7

5

ZMU04573

1. Neutral interlock trigger

1. Fully open2. Fully closed

1

ZMU01727

1

2

N

ZMU01728



Components

29

TIP: The free accelerator button can only be

pushed when the remote control lever is inthe neutral position.

After the button is pushed, the throttle be-gins to open after the remote control leveris moved at least 35°.

After using the free accelerator, return theremote control lever to the neutral position.The free accelerator button will return auto-matically to its set position. The remotecontrol will then engage forward and re-verse normally.

EMU25978

Throttle friction adjusterA friction device provides adjustable resis-tance to movement of the throttle grip or theremote control lever, and can be set accord-ing to operator preference.To increase resistance, turn the adjusterclockwise. To decrease resistance, turn theadjuster counterclockwise. WARNING! Donot overtighten the friction adjuster. Ifthere is too much resistance, it could bedifficult to move the remote control leveror throttle grip, which could result in anaccident. [EWM00033]

When constant speed is desired, tighten theadjuster to maintain the desired throttle set-ting.EMU25996

Engine shut-off cord (lanyard) and clipThe clip must be attached to the engine shut-off switch for the engine to run. The cordshould be attached to a secure place on theoperator’s clothing, or arm or leg. Should theoperator fall overboard or leave the helm, thecord will pull out the clip, stopping ignition tothe engine. This will prevent the boat fromrunning away under power. WARNING! At-tach the engine shut-off cord to a secureplace on your clothing, or your arm or legwhile operating. Do not attach the cord toclothing that could tear loose. Do not rou-te the cord where it could become entan-gled, preventing it from functioning. Avoidaccidentally pulling the cord during nor-mal operation. Loss of engine powermeans the loss of most steering control.

1. Fully open2. Fully closed3. Free accelerator

1

3

2

ZMU04575 ZMU01714

ZMU04646



Components

30

Also, without engine power, the boatcould slow rapidly. This could cause peo-ple and objects in the boat to be thrownforward. [EWM00123]

EMU26092

Main switchThe main switch controls the ignition system;its operation is described below. “ ” (off)With the main switch in the “ ” (off) posi-tion, the electrical circuits are off, and the keycan be removed. “ ” (on)

With the main switch in the “ ” (on) position,the electrical circuits are on, and the key can-not be removed. “ ” (start)With the main switch in the “ ” (start) po-sition, the starter motor turns to start the en-gine. When the key is released, it returnsautomatically to the “ ” (on) position.

EMU32054

Power trim and tilt switch on remote controlThe power trim and tilt system adjusts theoutboard motor angle in relation to the tran-som. Pushing the switch “ ” (up) trims theoutboard motor up, and then tilts it up. Push-ing the switch “ ” (down) tilts the outboardmotor down and trims it down. When theswitch is released, the outboard motor willstop in its current position. For instructionson using the power trim and tilt switch, seepages 64 and 66.

1. Engine shut-off cord (lanyard)2. Clip3. Engine shut-off switch

1. Engine shut-off cord (lanyard)2. Clip3. Engine shut-off switch

ZMU01716

1

2

3

ONSTARTOFF

ONSTARTOFF

1

2

3

ZMU05818

ONSTARTOFF

ZMU01718

ONOFF START

ONOFF START

ZMU05821



Components

31

EMU26156

Power trim and tilt switch on bottom cowlingThe power trim and tilt switch is located onthe side of the bottom cowling. Pushing theswitch “ ” (up) trims the outboard motor up,and then tilts it up. Pushing the switch “ ”(down) tilts the outboard motor down andtrims it down. When the switch is released,the outboard motor will stop in its current po-sition.For instructions on using the power trim andtilt switch, see page 66.

WARNINGEWM01032

Use the power trim and tilt switch locatedon the bottom cowling only when the boatis at a complete stop with the engine off.Attempting to use this switch while theboat is moving could increase the risk offalling overboard and could distract theoperator, increasing the risk of collisionwith another boat or an obstacle.

EMU26164

Power trim and tilt switches (twin bin-nacle type)The power trim and tilt system adjusts theoutboard motor angle in relation to the tran-som. Pushing the switch “ ” (up) trims theoutboard motor up, and then tilts it up. Press-ing the switch “ ” (down) tilts the outboardmotor down and trims it down. When theswitch is released, the outboard motor willstop in its current position. For instructionson using the power trim and tilt switches, seepages 64 and 66.

TIP:On the dual engine control, the switch on theremote control grip controls both outboardmotors at the same time.

DNUP

ZMU01720

1. Power trim and tilt switch


1

UP

DN

ZMU07741

ZMU04601

DN

UP

1



Components

32

EMU26246

Trim tab with anode

WARNINGEWM00841

An improperly adjusted trim tab couldcause difficult steering. Always test run af-ter the trim tab has been installed or re-placed to be sure steering is correct. Besure you have tightened the bolt after ad-justing the trim tab.

The trim tab should be adjusted so that thesteering control can be turned to either theright or left by applying the same amount offorce.If the boat tends to veer to the left (port side),turn the trim tab rear end to the port side “A”in the figure. If the boat tends to veer to theright (starboard side), turn the trim tab end tothe starboard side “B” in the figure.

NOTICEECM00841

The trim tab also serves as an anode toprotect the engine from electrochemicalcorrosion. Never paint the trim tab as it willbecome ineffective as an anode.

EMU26342

Tilt support lever for power trim and tilt modelTo keep the outboard motor in the tilted upposition, lock the tilt support lever to theclamp bracket.

NOTICEECM00661

Do not use the tilt support lever or knobwhen trailering the boat. The outboardmotor could shake loose from the tilt sup-port and fall. If the motor cannot betrailered in the normal running position,use an additional support device to secureit in the tilt position.

1. Cap2. Bolt3. Trim tab

3

21

ZMU07742

Bolt tightening torque:42 N·m (4.2 kgf·m, 31 lb·ft)

1. Tilt support lever

AB

ZMU07743



Components

33

EMU40762

Cowling lock leverThe cowling lock levers are used to securethe top cowling.

EMU26464

Flushing deviceThis device is used to clean the cooling waterpassages of the motor using a garden hoseand tap water.

TIP:For details on usage, see page 73.EMU40823

Fuel filterThe fuel filter functions to remove foreign ma-terial and separate water from the fuel. If wa-ter separated from the fuel exceeds a specificvolume, the alert system will activate. For fur-ther information, see page 49.

TIP:Adding an in-line 10-micron fuel filter hasbeen shown to greatly reduce the chance offuel contamination problems. Consult yourdealer for information about Yamaha 10-mi-cron fuel filters if your boat does not haveone.

1. Cowling lock lever


1ZMU07745

11

ZMU07746

1. Flushing device

1

ZMU07841

ZMU05493



Instruments and indicators

34

EMU41391

Digital tachometerThe tachometer shows the engine speed andhas the following functions.All segments of the display will light momen-tarily after the main switch is turned on andwill return to normal thereafter.

EMU36051

TachometerThe tachometer displays engine speed inhundreds of revolutions per minute (r/min).For example, if the tachometer display reads“22” then the engine speed is 2200 r/min.EMU26622

Trim meterThis meter shows the trim angle of your out-board motor.Memorize the trim angles that work best for

your boat under different conditions. Ad-just the trim angle to the desired using thepower trim and tilt switch.

If the trim angle of your motor exceeds thetrim operating range, the top segment onthe trim meter display will blink.

EMU26652

Hour meterThis meter shows the number of hours theengine has been run. It can be set to show thetotal number of hours or the number of hoursfor the current trip. The display can also beturned on and off.

To change the display format, press the“ ” (mode) button. The display can showtotal hours or trip hours, or turn off.To reset the trip hours, simultaneously pressthe “ ” (set) and “ ” (mode) buttons formore than 1 second while the trip hours aredisplayed. This resets the trip counter to 0(zero).The total number of hours the engine hasbeen run cannot be reset.EMU26526

Low oil pressure-alert indicatorIf oil pressure drops too low, the alert indica-tor will start to blink. For further information,see page 47.

1. Tachometer2. Trim meter3. Hour meter4. Low oil pressure-alert indicator5. Overheat-alert indicator6. Set button7. Mode button

ZMU01840

1

5

2

4

3

6 7

ZMU01740

ZMU01741




35

NOTICEECM00024

Do not continue to run the engine if thelow oil pressure-alert indicator is on andthe engine oil level is lower. Serious en-gine damage will occur.

The low oil pressure-alert indicator doesnot indicate the engine oil level. Use theoil dipstick to check the oil level. For fur-ther information, see page 55.

EMU26584

Overheat-alert indicatorIf the engine temperature rises too high, thealert indicator will start to blink. For further in-formation on reading the indicator, see page47.

NOTICEECM00053

Do not continue to run the engine if theoverheat-alert indicator is on. Serious en-gine damage will occur.

EMU26603

Digital speedometerThis gauge shows the boat speed and otherinformation.

All segments of the display will light momen-tarily after the main switch is turned on andwill return to normal thereafter.EMU36062

SpeedometerThe speedometer displays km/h, mph, orknots, according to operator preference. Se-lect the desired units of measurement by set-ting the selector switch on the back of thegauge. See the illustration for settings.

1. Low oil pressure-alert indicator

ZMU017361

1. Overheat-alert indicator

1. Speedometer2. Fuel gauge3. Trip meter/clock/voltmeter4. Alert indicator(s)

ZMU01737

1

TRIP TIME BATT

km/hknotmph

kmmile

SPEED

YAMAHA

set mode

12

43

ZMU07000




36

EMU26714

Fuel gaugeEight segments indicate the fuel level. Whenall segments are showing, the fuel tank is full.

The fuel level reading can be inaccurate dueto the position of the sensor in the fuel tankand the attitude of the boat in the water. Op-eration with bow-up trim or continuous turn-ing can give false readings.Do not adjust the selector switch for fuel sen-sor. Incorrectly setting the selector switch onthe gauge will give false readings. Consultyour Yamaha dealer on how to correctly setthe selector switch. NOTICE: Running out offuel can damage the engine. [ECM01771]

EMU36072

Trip meter / Clock / VoltmeterThe display shows either the trip meter, theclock, or the voltmeter.

To change the display, press the “ ” (mo-de) button repeatedly until the indicator onthe face of the gauge points to “ ” (tripmeter), “ ” (clock), or “ ” (voltmeter).EMU26692

Trip meterThis gauge displays the distance the boat hastraveled since the gauge was last reset.The trip distance is shown in kilometers ormiles depending upon the unit of measure-ment selected for the speedometer.To reset the trip meter to zero, press the “ ”(set) and “ ” (mode) buttons at the sametime.The trip distance is kept in memory by batterypower. The stored data will be lost if the bat-tery is disconnected.

EMU26702

ClockTo set the clock:1. Be sure the gauge is in the “ ” (time)

mode.2. Press the “ ” (set) button; the hour dis-

play will begin blinking.3. Press the “ ” (mode) button until the

desired hour is displayed.4. Press the “ ” (set) button again, the mi-

nute display will begin blinking.5. Press the “ ” (mode) button until the

desired minute is displayed.6. Press the “ ” (set) button again to start

the clock.

1. Cap2. Selector switch (for speed unit)3. Selector switch (for fuel sensor)

km/h(km)

mph(mile)

knots(mile)

12

34

ZMU07001

3

1

2

ZMU07002

TRIP TIME BATT

km/hknotmph

kmmile

SPEED

YAMAHA

set mode

ZMU07003




37

The clock operates on battery power. Dis-connecting the battery will stop the clock.Reset the clock after connecting the battery.EMU36081

VoltmeterThe voltmeter displays the charge of the bat-tery in volts(V).EMU26723

Fuel level-alert indicatorIf the fuel level decreases to one segment, thefuel level alert segment will blink.Do not continue to operate the engine at fullthrottle if an alert device has activated. Getback to the port using trolling engine speed.NOTICE: Running out of fuel can damagethe engine. [ECM01771]

EMU26733

Low battery voltage-alert indicatorIf battery voltage drops, the display will auto-matically turn on and blink.

Get back to the port soon if an alert devicehas activated. For charging the battery, con-sult your Yamaha dealer.

EMU26742

Fuel management meterThe fuel management meter shows the stateof the fuel consumption while the engine isrunning.

All segments of the display will light momen-tarily after the main switch is turned on andwill return to normal thereafter.EMU26753

Fuel flow meterThe fuel flow meter displays the amount offuel flow over a one-hour period, at the cur-rent rate of engine operation.

1. Fuel level-alert segment

TRIP TIME BATT

km/hknotmph

kmmile

SPEED

YAMAHA

set mode

ZMU07004

TRIP TIME BATT

km/hknotmph

kmmile

SPEED

YAMAHA

set mode

ZMU07005

1

1. Low battery indicator

1. Fuel flow meter2. Fuel consumption meter / Fuel economy

meter / Twin engine speed synchronizer3. Water separator-alert indicator (operates

only if the sensor has been installed)

TRIP TIME BATT

km/hknotmph

kmmile

SPEED

YAMAHA

set mode

ZMU07006

1

ZMU01748

1

23




38

The fuel flow meter displays gallons/houror liters/hour according to operator prefer-ence. Select the desired units of measure-ment by setting the selector switch on theback of the gauge during installation.

The fuel consumption meter and fuel econ-omy meter will indicate the same unit ofmeasurement.

Fuel flow readings are not accurate when theengine is operating under about 1300 r/min.As the fuel pump cycles on and off, the dis-play indicates either no fuel flow or higherflow than the actual average use.Dual engine users: the fuel flow meter candisplay the fuel flow of either or both engines.

To change the fuel flow display, press the“ ” (set) button repeatedly until the gaugedisplays “ ” (for fuel flow to the starboard en-

gine only), “ ” (for fuel flow to the port engineonly), or “ ” (for total fuel flow both en-gines).EMU36091

Fuel consumption meter / Fuel econo-my meter / Twin engine speed syn-chronizerThe display shows either the fuel consump-tion meter, the fuel economy meter, or thetwin engine synchronizer.To change the display, press the “ ” (mo-de) button repeatedly until the indicator onthe face of the gauge points to “ ” (fuelconsumption meter), “ ” (fuel economymeter), or “ ” (twin engine speed syn-chronizer).EMU26762

Fuel consumption meterThis gauge displays the total amount of fuelconsumed since the gauge was last reset.To reset the total fuel consumption meter tozero, press the “ ” (set) and “ ” (mode)buttons at the same time.

EMU26772

Fuel economyThis gauge displays the approximate dis-tance per liter or gallon when cruising.

1. Selector switch

ZMU01749

ZMU01751




39

If twin engines are installed on your boat, thegauge will only display the total fuel economyof both engines. Fuel consumption varies greatly with boat

design, weight, propeller used, engine trimangle, sea conditions (including wind), andthrottle position. Fuel consumption alsovaries slightly with the type of water (salt,fresh, and contaminate levels), air temper-ature and humidity, cleanliness of the boatbottom, engine mounting height, skill of theoperator, and individual gasoline formula-tion (winter or summer fuel and amount ofadditives).

The Yamaha digital speedometer and fuelmanagement meter calculates speed,miles traveled, and fuel economy by watermovement at the stern of the boat. This dis-tance can vary greatly from the actual dis-tance traveled because of water currents,sea swells, and the condition of the waterspeed sensor (if partially plugged or dam-aged).

Individual engines may slightly vary in theirfuel consumption due to manufacturingvariations. These variations can be evengreater if the engines are of different yearmodels. In addition, variations in propel-lers, even of the same basic dimensions ofthe same design, can also cause a slightvariation in fuel consumption.

EMU26783

Twin-engine speed synchronizerThis gauge displays the difference in enginespeed (r/min) between the port and starboardengines for reference purposes when syn-chronizing the two engines’ speeds.

If the two engines’ speeds are not synchro-nized while cruising, adjusting trim angle orthrottle can synchronize them.If large differences in trim angle or throttle areneeded to synchronize the engines, consultyour Yamaha dealer for adjustments to thethrottle cables.

ZMU01752

1. Port engine speed is higher2. Port engine speed is slightly higher3. Engine speed is synchronized evenly be-

tween port and starboard engines4. Starboard engine speed is slightly higher5. Starboard engine speed is higher

ZMU01753

ZMU01754

1

2

3

4

5




40

EMU26794

Water separator-alert indicatorThis indicator will blink when water has accu-mulated in the water separator. In such anevent, stop the engine and drain the waterfrom the separator.This indicator only operates when a waterseparator sensor is equipped.

EMU46662

6YC Multifunction meterThe 6YC Multifunction meter shows enginestatus and alert information.

Multifunction display

TIP:The optional items displayed on the multi-function display can be changed. For infor-mation on other settings or changing thedisplayed optional items, see the operationmanual included with the 6YC Multifunctionmeter.

This manual mainly covers the alert display ofthe 6YC Multifunction meter. See the follow-ing sections for information about the displayand indicators.Indicators

1. Multifunction display2. Directional keypad3. Set button4. Cancel button5. Menu button

ZMU01755

543

2

1

ZMU08323

1. Trim meter2. Optional items3. Tachometer

1. Yamaha Security System indicator (optional)2. Engine trouble-alert indicator3. Low battery voltage-alert indicator4. Water separator-alert indicator5. Low oil pressure-alert indicator

3

2

1

ZMU08324

6 5 4 3 2

1

ZMU08325




41

Yamaha Security System indicator (op-tional)This indicator appears, when the Yamaha Se-curity System is in lock mode.

Make sure that the Yamaha Security Systemindicator is off before starting the engine.Engine trouble alertIf the engine malfunctions while cruising, thepop-up window will appear.

To return to the normal displayPush the “SET” (set) button, and the enginetrouble-alert indicator will start to blink.

NOTICEECM00921

In such an event, the engine will not oper-ate properly. Consult a Yamaha dealer im-mediately.

Low battery voltage alertIf the battery voltage drops, the pop-up win-dow will appear.

To return to the normal displayPush the “SET” (set) button, and the low bat-tery voltage-alert indicator will start to blink.


1. Yamaha Security System indicator (optional)

1. Pop-up window

1

ZMU08326

1

ZMU08327

1. Engine trouble-alert indicator

1. Pop-up window

1

ZMU08332

1

ZMU08328




42

Get back to the port soon if the low batteryvoltage-alert device has activated. For charg-ing the battery, consult your Yamaha dealer.Water separator alertIf water has accumulated in the water sepa-rator (fuel filter) while cruising, the pop-upwindow will appear.

To return to the normal displayPush the “SET” (set) button, and the waterseparator-alert indicator will start to blink.

Stop the engine immediately and see page96 of this manual to drain the water from thefuel filter. Get back to the port soon and con-sult a Yamaha dealer immediately.

NOTICEECM00911

Gasoline mixed with water could causedamage to the engine.

Low oil pressure alertIf the engine oil pressure drops too low, thepop -up window will appear.The engine speed will automatically decreaseto about 2000–3500 r/min.

To return to the normal displayPush the “SET” (set) button, and the low oilpressure-alert indicator will start to blink.

1. Low battery voltage-alert indicator

1. Pop-up window

1

ZMU08333

1

ZMU08329

1. Water separator-alert indicator

1. Pop-up window

1

ZMU08334

1

ZMU08330




43

Stop the engine immediately if the buzzersounds and the low oil pressure-alert deviceis activated. Check the engine oil level and re-plenish oil if necessary. If the alert device hasactivated while the appropriate engine oil lev-el is maintained, consult your Yamaha dealer.

NOTICEECM01602

Do not continue to run the engine if thelow oil pressure alert device has activated.Serious engine damage will occur.

Overheat alertIf the engine temperature rises too high whilecruising, the pop -up window will appear.The engine speed will automatically decreaseto about 2000–3500 r/min.

To return to the normal displayPush the “SET” (set) button, and the over-heat-alert indicator will start to blink.

Stop the engine immediately if the buzzersounds and the overheat device has activat-ed. Check the cooling water inlet for clog-ging.

NOTICEECM01594

Do not continue to run the engine if theoverheat-alert indicator blinks. Seriousengine damage will occur.

Do not continue to operate the engine ifan alert device has activated. Consultyour Yamaha dealer if the problem can-not be located and corrected.

EMU46654

6Y8 Multifunction metersThere are two types of 6Y8 Multifunction me-ters. 6Y8 Multifunction tachometer 6Y8 Multifunction speed & fuel meter


1. Pop-up window

1

ZMU08335

1

ZMU08331


1

ZMU08336




44

6Y8 Multifunction tachometer

6Y8 Multifunction speed & fuel meter

TIP:The information displayed on the multifunc-tion display can be changed. For informationon other settings or changing the displayedinformation, see the operation manual includ-ed with the 6Y8 Multifunction meter.

This manual mainly covers the alert display ofthe 6Y8 Multifunction tachometer. See thefollowing sections for information about thealert indicators.Indicators

1. Set button2. Mode button

1. Tachometer2. Trim meter3. Multifunction display

1. Set button2. Mode button

SET MODE

21ZMU08407

1 2

3

ZMU08408

SET MODE

21ZMU08409

1. Speedometer2. Fuel meter3. Multifunction display

1. Yamaha Security System indicator (optional)2. Water separator-alert indicator3. Engine trouble-alert indicator4. Battery voltage indicator5. Overheat-alert indicator6. Low oil pressure-alert indicator

1

3

2

ZMU08410

1

7 6 5 4

2 3

ZMU08411




45

Yamaha Security System indicator (op-tional)This indicator appears, when the Yamaha Se-curity System is in lock mode.Lock mode

Make sure that the Yamaha Security Systemindicator is off before starting the engine.Water separator-alert indicatorIf water has accumulated in the water sepa-rator (fuel filter) while cruising, the water sep-arator-alert indicator will start to blink.

Stop the engine immediately and see page96 of this manual to drain the water from thefuel filter. Get back to the port soon and con-sult a Yamaha dealer immediately.

NOTICEECM00911

Gasoline mixed with water could causedamage to the engine.

Engine trouble-alert indicatorIf the engine malfunctions while cruising, theengine trouble-alert indicator will start toblink. Get back to the port soon and consulta Yamaha dealer immediately.

NOTICEECM00921

In such an event, the engine will not oper-ate properly. Consult a Yamaha dealer im-mediately.

Low battery voltage alertIf the battery voltage drops, the battery volt-age value will start to blink.

7. Cooling water pressure indicator (optional)

1. Yamaha Security System indicator (optional)


SET MODE

1

ZMU08412

1

ZMU08413

1. Engine trouble-alert indicator

1. Battery voltage value

1

ZMU08414

1 ZMU08415




46

Get back to the port soon if the low batteryvoltage alert device has activated. For charg-ing the battery, consult your Yamaha dealer.Overheat-alert indicatorIf the engine temperature rises too high whilecruising, the overheat-alert indicator will startto blink, and the engine speed will automati-cally decrease to about 2000–3500 r/min.

Stop the engine immediately if the buzzersounds and the overheat device has activat-ed. Check the cooling water inlet for clog-ging.

NOTICEECM01594

Do not continue to run the engine if theoverheat-alert indicator blinks. Seriousengine damage will occur.

Do not continue to operate the engine ifan alert device has activated. Consultyour Yamaha dealer if the problem can-not be located and corrected.

Low oil pressure-alert indicatorIf the engine oil pressure drops too low, thelow oil pressure-alert indicator will start toblink, and the engine speed will automaticallydecrease to about 2000–3500 r/min.

Stop the engine immediately if the buzzersounds and the low oil pressure-alert indica-tor blinks. Check the engine oil level and re-plenish oil if necessary. If the alert device hasactivated while the appropriate engine oil lev-el is maintained, consult your Yamaha dealer.

NOTICEECM01602

Do not continue to run the engine if thelow oil pressure alert device has activated.Serious engine damage will occur.


1

ZMU08416


1

ZMU08417



Engine control system

47

EMU26806

Alert system

NOTICEECM00093

Do not continue to operate the engine if analert device has activated. Consult yourYamaha dealer if the problem cannot belocated and corrected.

EMU41927

Overheat alertThis engine has an overheat-alert device. Ifthe engine temperature rises too high, thealert device will activate. The engine speed will automatically de-

crease to about 2000–3500 r/min. The overheat-alert indicator will light or

blink.

The pop-up window will appear on theMulti-Display.

The buzzer will sound.

If the alert system has activated, stop the en-gine and check the cooling water inlets:Check trim angle to be sure that the cooling

water inlet is submerged.

Check the cooling water inlet for clogging.

ZMU05422

ZMU08533

1. Cooling water inlet

ZMU01758

ZMU07859

1

ZMU07772




48

Twin engine drive usersIf the overheat alert system of one outboardmotor activates, the engine will slow down.To turn off the alert activation on the out-board motors not affected by overheating1. Turn the main switch to “ ” (off) for the

overheating outboard motor.

TIP:If the alert system has activated, stop the en-gine and tilt the outboard motor up to checkthe cooling water inlets for clogging.2. If the alert system is still activated, tilt the

overheated outboard motor up and re-turn to port.

EMU41937

Low oil pressure alertIf the oil pressure drops too low, the alert de-vice will activate. The engine speed will automatically de-

crease to about 2000–3500 r/min. The low oil pressure-alert indicator will light

or blink.


The buzzer will sound.

ZMU08288

ON

OFF START

ZMU05431

ZMU08534




49

TIP:If the alert system has activated, stop the en-gine as soon as it is safe to do so. Check theoil level and add oil as needed. If the oil levelis correct and the alert system does not turnoff, consult your Yamaha dealer.Twin engine drive usersIf the low oil pressure alert system of one out-board motor activates, all of the engines willslow down and the buzzer will sound.To turn off the alert activation on the out-board motors not affected by the low oil pres-sureTurn the main switch to “ ” (off) for the out-board motor that has the low oil pressure.

EMU41947

Water separator alertThe outboard motor is equipped with a waterseparator alert system. If water separatedfrom the fuel exceeds a specific volume, thealert system will activate. The water separator-alert indicator will

come on or blink.


ZMU01758

ZMU07859

ON

OFF START

ZMU05424

ZMU08535




50

The buzzer will sound intermittently whenthe control lever is in the neutral position.

If the alert system has activatedStop the engine and see page 98 of this man-ual to drain the water from the fuel filter. Re-turn to port and consult a Yamaha dealerimmediately.

NOTICEECM02471

Although the buzzer will stop when the en-gine is started and the control lever ismoved to the forward or reverse position,do not use the outboard motor. Otherwise,serious engine damage could occur.

ZMU01758

ZMU07859



Installation

51

EMU26903

InstallationThe information presented in this section isintended as reference only. It is not possibleto provide complete instructions for everypossible boat and motor combination. Propermounting depends in part on experience andthe specific boat and motor combination.

WARNINGEWM01591

Overpowering a boat could cause se-vere instability. Do not install an out-board motor with more horsepowerthan the maximum rating on the capaci-ty plate of the boat. If the boat does nothave a capacity plate, consult the boatmanufacturer.

Improper mounting of the outboard mo-tor could result in hazardous conditionssuch as poor handling, loss of control,or fire hazards. For permanently mount-ed models, your dealer or other personexperienced in proper rigging shouldmount the motor.

EMU33482

Mounting the outboard motorThe outboard motor should be mounted sothat the boat is well balanced. Otherwise, theboat could be hard to steer. For single-engineboats, mount the outboard motor on the cen-terline (keel line) of the boat. For twin engineboats, mount the outboard motors equidis-tant from the centerline. Consult yourYamaha dealer or boat manufacturer for fur-ther information on determining the propermounting location.

EMU26937

Mounting height (boat bottom)The mounting height of your outboard motoraffects its efficiency and reliability. If it ismounted too high, propeller ventilation mayoccur, which will reduce propulsion due toexcessive propeller slip, and the water in-takes for the cooling system may not get anadequate water supply, which can cause en-gine overheating. If the engine is mounted toolow, water resistance (drag) will increase,thereby reducing engine efficiency and per-formance.Most commonly, an outboard motor shouldbe mounted so that the anti-cavitation plateis in alignment with the bottom of the boat.The optimum mounting height of the out-board motor is affected by the boat/motorcombination and the desired use. Test runsat different heights can help determine the

1. Center line (keel line)

1. Center line (keel line)

1

1



Installation

52

optimum mounting height. Consult yourYamaha dealer or boat manufacturer for fur-ther information on determining the propermounting height.

NOTICEECM01635

Make sure that the idle hole is highenough to prevent water from enteringthe engine even if the boat is stationarywith the maximum load.

Incorrect engine height or obstructionsto the smooth flow of water (such as thedesign or condition of the boat, or ac-cessories, such as transom ladders ordepth finder transducers) can create air-borne water spray while the boat iscruising. If the outboard motor is oper-ated continuously in the presence of air-borne water spray, enough water couldenter the engine through the air intakeopening in the top cowling to cause se-vere engine damage. Remove the causeof the airborne water spray.

ZMU01762



Operation

53

EMU36382

First-time operationEMU36393

Fill engine oilThe engine is shipped from the factory with-out engine oil. If your dealer did not fill the oil,you must fill it before starting the engine.NOTICE: Check that the engine is filledwith oil before first-time operation to avoidsevere engine damage. [ECM01782]

The engine is shipped with the following tag,which should be removed after engine oil isfilled for the first time. For more informationon checking the engine oil level, see page 55.

EMU30175

Breaking in engineYour new engine requires a period of break-in to allow mating surfaces of moving parts towear in evenly. Correct break-in will help en-sure proper performance and longer enginelife. NOTICE: Failure to follow the break-inprocedure could result in reduced enginelife or even severe engine damage. [ECM00802]

EMU27086

Procedure for 4-stroke modelsYour new engine requires a period of 10hours break-in to allow mating surfaces ofmoving parts to wear in evenly.

TIP:Run the engine in the water, under load (ingear with a propeller installed) as follows. For10 hours for breaking in engine avoid extend-ed idling, rough water and crowded areas.1. For the first hour of operation:

Run the engine at varying speeds up to2000 r/min or approximately half throttle.

2. For the second hour of operation:Increase engine speed as much as nec-essary to put the boat on plane (butavoid full-throttle operation), then backoff on the throttle while keeping the boatat a planing speed.

3. Remaining 8 hours:Run the engine at any speed. However,avoid operating at full throttle for morethan 5 minutes at a time.

4. After the first 10 hours:Operate the engine normally.

EMU36402

Getting to know your boatAll boats have unique handling characteris-tics. Operate cautiously while you learn howyour boat handles under different conditionsand various trim angles (see page 64).EMU36414

Checks before starting engine

WARNINGEWM01922

If any item in “Checks before starting en-gine” is not working properly, have it in-spected and repaired before operating theoutboard motor. Otherwise, an accidentcould occur.

ZMU01710



Operation

54

NOTICEECM00121

Do not start the engine out of water. Over-heating and serious engine damage canoccur.

EMU36422

Fuel levelBe sure you have plenty of fuel for your trip. Agood rule is to use 1/3 of your fuel to get tothe destination, 1/3 to return, and to keep 1/3as an emergency reserve. With the boat levelon a trailer or in the water, turn the key to “ ”(on) and check the fuel level. For fuel filling in-structions, see page 59.EMU40774

Removing top cowlingFor the following checks, remove the topcowling from the bottom cowling.To remove the top cowling, pull the cowlinglock levers and lift up the top cowling.

EMU36443

Fuel system

WARNINGEWM00061

Gasoline and its vapors are highly flamma-ble and explosive. Keep away from sparks,cigarettes, flames, or other sources of ig-nition.

WARNINGEWM00911

Leaking fuel can result in fire or explosion.Check for fuel leakage regularly. If any fuel leakage is found, the fuel sys-

tem must be repaired by a qualified me-chanic. Improper repairs can make theoutboard unsafe to operate.

EMU36453

Check for fuel leaksCheck for fuel leaks or gasoline fumes in

the boat.Check for fuel leakage from the fuel sys-

tem.Check the fuel tank and fuel lines for

cracks, swellings, or other damage.

1. Cowling lock lever2. Bottom cowling3. Top cowling

1

2

3

ZMU07749

1. Cowling lock lever2. Bottom cowling3. Top cowling

1

3

1

2

ZMU07750



Operation

55

EMU37323

Checking the fuel filterCheck that the fuel filter is clean and free ofwater. If any water is found in the fuel, or if asignificant amount of debris is found, the fueltank should be checked and cleaned by aYamaha dealer.

EMU36463

Controls Turn the steering wheel full-right and full-

left. Make sure operation is smooth and un-restricted throughout the whole range withno binding or excessive free play.

Operate the throttle levers several times tomake sure there is no hesitation in theirtravel. Operation should be smooth overthe complete range of motion, and each le-ver should return completely to the idle po-sition.

Look for loose or damaged connections ofthe throttle and shift cables.

EMU36484

Engine shut-off cord (lanyard)Inspect the engine shut-off cord and clip fordamage, such as cuts, breaks, and wear.

EMU37054

Engine oil1. Put the outboard motor in an upright po-

sition (not tilted). NOTICE: If the motoris not level, the oil level indicated onthe dipstick may not be accurate.[ECM01791]

2. Remove oil dipstick and wipe it clean.3. Insert the dipstick and remove it again.

Be sure to completely insert the dipstickinto the dipstick guide, otherwise the oillevel measurement will be incorrect.

4. Check the oil level using the dipstick tobe sure the level falls between the upperlevel mark and lower level mark. Consultyour Yamaha dealer if the oil level is outof specified level or if it appears milky ordirty.

ZMU05493

1. Clip2. Engine shut-off cord (lanyard)

1. Oil dipstick

ZMU06873

1

2

1

ZMU06221



Operation

56

EMU27154

EngineCheck the engine and engine mounting. Look for loose or damaged fasteners.Check the propeller for damage.Check for engine oil leaks.EMU36494

Flushing deviceCheck that the flushing device’s garden hoseconnector is securely screwed on to the fit-ting on the bottom cowling. NOTICE: If thegarden hose connector is not properlyconnected, cooling water can leak out andthe engine can overheat during operation.[ECM01802]

EMU40752

Installing top cowling1. Check the rubber seal for damage. If the

rubber seal is damaged, have it replacedby a Yamaha dealer.

2. Check that the rubber seal is seated allthe way around the bottom cowling.

3. Check that all of the cowling lock leversare pulled outward.

4. Align the 3 protrusions on the top cowl-ing with the corresponding holders onthe bottom cowling, and then place thetop cowling on the bottom cowling.

1. Oil dipstick2. Lower mark3. Upper mark

1. Fitting2. Garden hose connector3. Flushing device

1 3

2

ZMU07056

3 2 1

ZMU07754

1. Rubber seal2. Bottom cowling

1. Top cowling2. Protrusion3. Holder4. Bottom cowling

1

2ZMU08260

2

31

4ZMU07756



Operation

57

5. Push the cowling lock levers inward tosecure the top cowling.

6. Check the fitting of the top cowling bypushing it with both hands. NOTICE: Ifthe top cowling is not installed cor-

rectly, water can enter the top cowlingand damage the engine, or the topcowling can blow off at high speeds.[ECM02371]

EMU2915A

Checking power trim and tilt system

WARNINGEWM01931

Never get under the lower unit while it istilted, even when the tilt support lever islocked. Severe injury could occur if theoutboard motor accidentally falls.

Body parts can be crushed between themotor and the clamp bracket when themotor is trimmed or tilted.

Be sure no one is near the outboard mo-tor before performing this check.

1. Check the power trim and tilt unit for anysign of oil leaks.

2. Operate each of the power trim and tiltswitches on the remote control and en-gine bottom cowling to check that allswitches work.

3. Tilt the outboard motor up and checkthat the tilt rod and trim rods are extend-ed completely.

1. Top cowling2. Protrusion3. Holder4. Bottom cowling



1

23

23

4

ZMU07757

1 ZMU07758

11

ZMU07759

ZMU07760



Operation

58

4. Use the tilt support lever to lock the mo-tor in the up position. Operate the tiltdown switch briefly so the motor is sup-ported by the tilt support lever.

5. Check that the tilt rod and trim rods arefree of corrosion or other flaws.

6. Activate the tilt-down switch until thetrim rods have retracted completely intothe cylinders.

7. Activate the trim-up switch until the tiltrod is fully extended. Unlock the tilt sup-port lever.

8. Tilt the outboard motor down. Checkthat the tilt rod and trim rods operatesmoothly.

EMU36585

BatteryCheck the battery’s charge. If your boat isequipped with a Yamaha digital speedome-ter, the voltmeter and low battery alert func-tions will help you monitor the battery’scharge. A battery in good condition will pro-vide a minimum of 12 volts. Check that thebattery connections are clean, secure andcovered by insulating covers. The electricalconnections of the battery and cables mustbe clean and properly connected or the bat-tery will not start the engine.

1. Tilt rod2. Trim rod


2

1

ZMU07762

1

ZMU07763

1. Trim rod

1. Tilt rod2. Tilt support lever

1 ZMU07764

1

2

ZMU07765



Operation

59

If the battery needs charging, consult yourYamaha dealer or the battery manufacturer’sinstructions.EMU30027

Filling fuel

WARNINGEWM01831

Gasoline and its vapors are highly flam-mable and explosive. Always refuel ac-cording to this procedure to reduce therisk of fire and explosion.

Gasoline is poisonous and can cause in-jury or death. Handle gasoline with care.Never siphon gasoline by mouth. If youshould swallow some gasoline or inhalea lot of gasoline vapor, or get some gas-oline in your eyes, see your doctor im-mediately. If gasoline spills on your skin,wash with soap and water. If gasolinespills on your clothing, change yourclothes.

1. Make sure that the engine is stopped.2. Make sure that the boat is in a well-ven-

tilated outdoor area, either securelymoored or trailered.

3. Make sure that no one is in the boat.4. Do not smoke and keep away from

sparks, flames, static electric discharge,or other sources of ignition.

5. If you use a portable container to storeand dispense fuel, only use a locally ap-proved GASOLINE container.

6. Touch the fuel nozzle to the filler openingor funnel to help prevent electrostaticsparks.

7. Fill the fuel tank, but do not overfill.WARNING! Do not overfill. Otherwisefuel can expand and overflow if thetemperature increases. [EWM02611]

8. Tighten the fuel tank cap securely.

9. Wipe up any spilled gasoline immediate-ly with dry rags. Dispose of rags properlyaccording to local laws or regulations.

EMU27453

Operating engine

WARNINGEWM00421

Before starting the engine, make surethat the boat is tightly moored and thatyou can steer clear of any obstructions.Be sure there are no swimmers in thewater near you.

When the air vent screw is loosened,gasoline vapor will be released. Gaso-line is highly flammable, and its vaporsare flammable and explosive. Refrainfrom smoking, and keep away fromopen flames and sparks while looseningthe air vent screw.

This product emits exhaust gases whichcontain carbon monoxide, a colorless,odorless gas which could cause braindamage or death when inhaled. Symp-toms include nausea, dizziness, anddrowsiness. Keep cockpit and cabin ar-eas well ventilated. Avoid blocking ex-haust outlets.

EMU31814

Sending fuel1. If there is a fuel joint or a fuel valve on the

boat, firmly connect the fuel line to thejoint or open the fuel valve.

2. Squeeze the primer pump, with the ar-row pointing up, until you feel it becomefirm.



Operation

60

EMU27495

Starting engine

WARNINGEWM01601

Before starting the engine, make sure thatthe boat is tightly moored and that you cansteer clear of any obstructions. Be surethere are no swimmers in the water nearyou.

EMU2762B

Electric start and remote control models

WARNINGEWM01842

Failure to attach the engine shut-offcord could result in a runaway boat ifoperator is ejected. Attach the engineshut-off cord to a secure place on yourclothing, or your arm or leg while oper-ating. Do not attach the cord to clothingthat could tear loose. Do not route thecord where it could become entangled,preventing it from functioning.

Avoid accidentally pulling the cord dur-ing normal operation. Loss of enginepower means the loss of most steeringcontrol. Also, without engine power, theboat could slow rapidly. This could cau-se people and objects in the boat to bethrown forward.

1. Place the remote control lever in “ ”(neutral).

TIP:The start-in-gear protection device preventsthe engine from starting except when in neu-tral.2. Attach the engine shut-off cord to a se-

cure place on your clothing, or your armor leg. Then install the clip on the otherend of the cord into the engine shut-offswitch.

1. Arrow

N

ZMU01771

N

ZMU04588

ZMU01772



Operation

61

3. Turn the main switch to “ ” (on).

TIP:Dual engine users: When the main switch isturned on, the buzzer operates for a few sec-onds then stops automatically. The buzzeralso operates if one of the engines stalls.4. Turn the main switch to “ ” (start),

and hold it for a maximum of 5 seconds.

5. Immediately after the engine starts, re-lease the main switch to return it to “ ”(on). NOTICE: Never turn the mainswitch to “ ” (start) while the en-gine is running. Do not keep the start-er motor turning for more than 5seconds. If the starter motor is turnedcontinuously for more than 5 seconds,the battery will be quickly discharged,thus making it impossible to start theengine. The starter can also be dam-aged. If the engine will not start after 5seconds of cranking, return the mainswitch to “ ” (on), wait 10 seconds,then crank the engine again. [ECM00193]

EMU36511

Checks after starting engineEMU36524

Cooling waterCheck for a steady flow of water from thecooling water pilot hole. A continuous flow ofwater from the pilot hole indicates that thewater pump is pumping water through thecooling water passages. If the cooling waterpassages are frozen, it may take a while forwater to start flowing out of the pilot hole.

NOTICEECM01811

If water is not flowing out of the pilot holeat all times while the engine is running,overheating and serious damage couldoccur. Stop the engine and check whether

ONSTARTOFF

ONSTARTOFF

ZMU05828

ONSTART

ZMU01774

ONSTART

ZMU05830



Operation

62

the cooling water inlet on the lower caseor the cooling water pilot hole is blocked.Consult your Yamaha dealer if the prob-lem cannot be located and corrected.

EMU27671

Warming up engineEMU41234

Procedure for warming up engine1. After starting the engine, warm up the

engine until the engine speed stabilizesat idle speed to provide maximum oper-ating performance and acceleration.NOTICE: Failure to do so will shortenengine life. [ECM04550]

2. Check that the low oil pressure-alert indi-cator remains off. NOTICE: If the low oilpressure-alert indicator blinks afterthe engine starts, stop the engine.Otherwise, serious engine damagecould occur. Consult your Yamahadealer. [ECM02381]

EMU36532

Checks after engine warm upEMU36542

ShiftingWhile the boat is tightly moored, and withoutapplying throttle, confirm that the engineshifts smoothly into forward and reverse, andback to neutral.EMU40461

Stop switchesPerform the following procedure to checkthat the main switch and engine shut-offswitch operate properly.Check that the engine stops when the main

switch is turned to the “ ” (off) position.Check that the engine stops when the clip

is pulled from the engine shut-off switch.Check that the engine cannot be started

with the clip removed from the engine shut-off switch.

EMU31734

Shifting

WARNINGEWM00181

Before shifting, make sure there are noswimmers or obstacles in the water nearyou.

NOTICEECM01611

Warm up the engine before shifting intogear. Until the engine is warm, the idlespeed may be higher than normal. Highidle speed can prevent you from shiftingback to neutral. If this occurs, stop the en-gine, shift to neutral, then restart the en-gine and allow it to warm up.

To shift out of neutral1. Pull the neutral interlock trigger up (if

equipped).

1. Cooling water pilot hole

Idle speed (in neutral):650–750 r/min

1

ZMU07766



Operation

63

2. Move the remote control lever firmly andcrisply forward (for forward gear) or rear-ward (for reverse gear) about 35° (a de-tent can be felt).

To shift from in gear (forward/reverse) to neu-tral1. Close the throttle so that the engine

slows to idle speed.

2. After the engine is at idle speed in gear,move the remote control lever firmly andcrisply to the neutral position.

1. Neutral interlock trigger

1

ZMU01727

FN

R32˚ 32˚

ZMU05460

RF

ZMU05462

N

ZMU01771



Operation

64

EMU31743

Stopping boat

WARNINGEWM01511

Do not use the reverse function to slowdown or stop the boat as it could causeyou to lose control, be ejected, or im-pact the steering wheel or other parts ofthe boat. This could increase the risk ofserious injury. It could also damage theshift mechanism.

Do not shift into reverse while travelingat planing speeds. Loss of control, boatswamping, or damage to the boat couldoccur.

The boat is not equipped with a separatebraking system. Water resistance stops it af-ter the throttle lever is moved back to idle.The stopping distance varies depending ongross weight, water surface conditions, andwind direction.EMU27822

Stopping engineBefore stopping the engine, first let it cool offfor a few minutes at idle or low speed. Stop-ping the engine immediately after operatingat high speed is not recommended.EMU31832

Procedure1. Turn the main switch to “ ” (off).

2. Remove the key if the boat will be left un-attended.

TIP:The engine can also be stopped by pullingthe cord and removing the clip from the en-gine shut-off switch, then turning the mainswitch to “ ” (off).EMU27865

Trimming outboard motor

WARNINGEWM00741

Excessive trim for the operating condi-tions (either trim up or trim down) can cau-se boat instability and can make steeringthe boat more difficult. This increases thepossibility of an accident. If the boat be-gins to feel unstable or is hard to steer,slow down and/or readjust the trim angle.

The trim angle of the outboard motor helpsdetermine the position of the bow of the boatin the water. Correct trim angle will help im-

N

ZMU04588

ONOFF

ZMU01779

OFFOFFON ON

ZMU05833



Operation

65

prove performance and fuel economy whilereducing strain on the engine. Correct trimangle depends upon the combination ofboat, engine, and propeller. Correct trim isalso affected by variables such as the load inthe boat, sea conditions, and running speed.

EMU27889

Adjusting trim angle (Power trim and tilt)

WARNINGEWM00754

Be sure all people are clear of the out-board motor when adjusting the trim an-gle. Body parts can be crushed betweenthe motor and the clamp bracket whenthe motor is trimmed or tilted.

Use caution when trying a trim positionfor the first time. Increase speed gradu-ally and watch for any signs of instabilityor control problems. Improper trim an-gle can cause loss of control.

If equipped with a power trim and tiltswitch located on the bottom cowling,use the switch only when the boat is at acomplete stop with the engine off. Donot adjust the trim angle with this switchwhile the boat is moving.

Adjust the outboard motor trim angle usingthe power trim and tilt switch.

To raise the bow (trim-out), press the switch“ ” (up).To lower the bow (trim-in), press the switch“ ” (down).Make test runs with the trim set to differentangles to find the position that works best foryour boat and operating conditions.EMU27913

Adjusting boat trimWhen the boat is on plane, a bow-up attituderesults in less drag, greater stability and effi-ciency. This is generally when the keel line ofthe boat is up about 3 to 5 degrees. With thebow up, the boat may have a greater tenden-cy to steer to one side or the other. Compen-sate for this as you steer. When the bow ofthe boat is down, it is easier to acceleratefrom a standing start onto plane.

1. Trim operating angle



DNUP

1

ZMU01781

DN

UP

1

ZMU07381



Operation

66

Bow UpToo much trim-out puts the bow of the boattoo high in the water. Performance and econ-omy are decreased because the hull of theboat is pushing the water and there is moreair drag. Excessive trim-out can also causethe propeller to ventilate, which reduces per-formance further, and the boat may “por-poise” (hop in the water), which could throwthe operator and passengers overboard.

Bow DownToo much trim-in causes the boat to “plow”through the water, decreasing fuel economyand making it hard to increase speed. Oper-ating with excessive trim-in at higher speedsalso makes the boat unstable. Resistance atthe bow is greatly increased, heightening thedanger of “bow steering” and making opera-tion difficult and dangerous.

TIP:Depending on the type of boat, the outboardmotor trim angle may have little effect on thetrim of the boat when operating.EMU27936

Tilting up and downIf the engine will be stopped for some time orif the boat is moored in shallows, the out-board motor should be tilted up to protect thepropeller and lower casing from damage bycollision with obstructions, and also to re-duce salt corrosion.

WARNINGEWM00223

Make sure that no one is near the out-board motor when tilting the outboardmotor up or down. Otherwise, body partscould be crushed between the outboardmotor and the clamp bracket.

WARNINGEWM00251

Leaking fuel is a fire hazard. If there is afuel joint on the outboard motor, discon-nect the fuel line or close the fuel cock ifthe engine will be tilted for more than afew minutes. Otherwise fuel may leak.



Operation

67

NOTICEECM00242

Before tilting the outboard motor, stopthe engine by following the procedureon page 64. Never tilt the outboard mo-tor while the engine is running. Severedamage from overheating can result.

Do not tilt up the engine by pushing thetiller handle (if equipped) because thiscould break the handle.

EMU42684

Procedure for tilting up1. Place the remote control lever in neutral.

2. Press the power trim and tilt switch “ ”(up) until the outboard motor has tiltedup completely.

3. Pull the tilt support lever toward you tosupport the engine. WARNING! Aftertilting the outboard motor, be sure tosupport it with the tilt support knob ortilt support lever. Otherwise the out-board motor could fall back downsuddenly if oil in the power trim and tiltunit or in the power tilt unit loses pres-

N

ZMU01771

N

ZMU07382




ZMU07848

UP

1

ZMU07850

UP1

1

UP

ZMU07768



Operation

68

sure. [EWM00263] NOTICE: Do not use thetilt support lever or knob when traile-ring the boat. The outboard motorcould shake loose from the tilt supportand fall. If the motor cannot betrailered in the normal running posi-tion, use an additional support deviceto secure it in the tilt position. Formore detailed information, see page71. [ECM01642]

4. Once the outboard motor is supportedwith the tilt support lever, press the pow-er trim and tilt switch “ ” (down) to re-tract the trim rods. NOTICE: Make surethat the trim rods retract completelyduring mooring. This protects the rodsfrom marine growth and corrosion,which could damage the power trimand tilt mechanism. [ECM00254]

EMU42702

Procedure for tilting down1. Push the power trim and tilt switch “ ”

(up) until the outboard motor is support-ed by the tilt rod and the tilt support leverbecomes free.

2. Release the tilt support lever.

3. Push the power trim and tilt switch “ ”(down) to lower the outboard motor tothe desired position.

1. Trim rod

1 ZMU07764



1

ZMU07770

ZMU07851

1

DN



Operation

69

EMU28063

Shallow water EMU40702

Cruising in shallow waterThe outboard motor can be tilted up partiallyto allow operation in shallow water.

NOTICEECM02361

Do not tilt the outboard motor up so thatthe cooling water inlet on the lower unit isabove the surface of the water when set-ting up for and cruising in shallow water.Otherwise severe damage from overheat-ing can result.

EMU32923

Procedure for power trim and tilt models1. Place the remote control lever in neutral.

2. Slightly tilt the outboard motor up to thedesired position using the power trimand tilt switch. WARNING! Using thepower trim and tilt switch on the bot-tom cowling while the boat is movingor engine is on could increase the riskof falling overboard and could distract



ZMU07853

DN

1

1DN

ZMU07771

1. Cooling water inlet

1

ZMU07772

N

ZMU01771

N

ZMU04588



Operation

70

the operator, increasing the risk ofcollision with another boat or an ob-stacle. [EWM01851]

3. To return the outboard motor to the nor-mal running position, press the powertrim and tilt switch and slowly tilt the out-board motor down.

EMU41371

Operating in other conditionsOperating in salt waterAfter operating in saltwater, brackish water,or water high in other minerals, flush the cool-ing system with fresh water to minimize cor-rosion and clogging of the cooling waterpassages with deposits. Also, rinse the exte-rior of the outboard motor with fresh water.Operating in water containing mud, sand,silt, debris, or vegetationMud, sand, silt, debris, and vegetation in thewater may restrict water flow into the coolingwater inlet covers or clog internal water pas-sages. Check and clean the cooling water in-let covers frequently when operating in theseconditions. Flush the engine with clean, freshwater after use in these environments. Con-sult your dealer if normal water flow can notbe restored by cleaning the cooling water in-let covers or flushing with fresh water.



Maintenance

71

EMU41533

Transporting and storing out-board motor

WARNINGEWM02641

USE CARE when transporting fuel tank,whether in a boat or car.

DO NOT fill fuel container to maximumcapacity. Gasoline will expand consider-ably as it warms up and can build uppressure in the fuel container. This cancause fuel leakage and a potential firehazard.

Leaking fuel is a fire hazard. Tighten se-curely the fuel valve when transportingand storing the outboard motor.

Never get under the outboard motorwhile it is tilted. Severe injury could oc-cur if the outboard motor accidentallyfalls.

Do not use the tilt support lever or knobwhen trailering the boat. The outboardmotor could shake loose from the tiltsupport and fall. If the outboard motorcannot be trailered in the normal run-ning position, use an additional supportdevice to secure it in the tilt position.

Leaking fuel is a fire hazard. When traileringthe boat, close the fuel valve to prevent fuelfrom leaking.The outboard motor should be transportedand stored in the normal running position. Ifthere is insufficient road clearance in this po-sition, then trailer the outboard motor in thetilt position using a motor support devicesuch as a transom saver bar. Consult yourYamaha dealer for further details.When the outboard motor is tilted for a pro-longed time when mooring or trailering theboat, close the fuel valve.

EMU30062

Storing outboard motorWhen storing your Yamaha outboard motorfor prolonged periods of time (2 months orlonger), several important procedures mustbe performed to prevent excessive damage.It is advisable to have your outboard motorserviced by an authorized Yamaha dealer pri-or to storage. However, you, the owner, witha minimum of tools, can perform the follow-ing procedures.

NOTICEECM01361

To prevent problems which can becaused by oil entering the cylinder fromthe sump, keep the outboard motor inthe attitude shown when transportingand storing it. Do not store or transportthe outboard motor on its side (not up-right).

Do not place the outboard motor on itsside before the cooling water hasdrained from it completely, otherwisewater may enter the cylinder through theexhaust port and cause engine trouble.

Store the outboard motor in a dry, well-ventilated place, not in direct sunlight.

EMU41382

Conditioning and stabilizing gasolineWhen preparing to store a boat for extendedperiods (2 months or longer) it is best to com-pletely remove all gasoline from the boat’sfuel tank(s). If it is not possible to remove thegasoline, add one ounce of “Yamalube FuelStabilizer & Conditioner Plus” to each gallonof gasoline in a full tank of gasoline to providefuel stability and corrosion protection.



Maintenance

72

TIP:Do not fill the fuel tank(s) to the point of over-flowing. Approximately 7/8 full will allowenough space in the fuel tank to prevent gas-oline purging from the fuel tank vent due toexpansion with temperature changes.Do not cap the fuel tank vent. Excessivepressure could damage the boat and motor’sfuel systems.A partially filled fuel tank, less than 7/8 full butnot completely empty, is not recommended.Air space above the gasoline allows airmovement which can bring in water throughcondensation as the air temperature chang-es.Condensation inside the fuel tank can causecorrosion problems and phase separation ofgasoline containing ethanol.Consult your Yamaha dealer concerning pre-ventative measures that may work best forthe gasoline and environmental conditions inyour area.EMU28306

ProcedureEMU44313

Flushing with the flushing attachment Cooling system flushing is essential to pre-vent the cooling system from clogging upwith salt, sand, or dirt. In addition, fogging/lu-bricating of the engine is mandatory to pre-vent excessive engine damage due to rust.Perform the flushing and fogging at the sametime.1. Wash the exterior of the outboard motor

using fresh water. NOTICE: Do notspray water into the air intake. [ECM01841]

For further information, see page 74.2. Fill the fuel tank with fresh fuel and add

one ounce of “Yamalube Fuel Stabilizer& Conditioner Plus” to each gallon of fu-el.

TIP:The use of “Yamalube Fuel Stabilizer & Con-ditioner Plus” eliminates the need to drain thefuel system. Consult your Yamaha dealer orother qualified mechanic if the fuel system isto be drained instead.3. Remove the top cowling and propeller.4. Install the flushing attachment over the

cooling water inlet, and then turn on thewater supply. NOTICE: Do not run theengine without supplying it with cool-ing water. Either the engine waterpump will be damaged or the enginewill be damaged from overheating.Before starting the engine, be sure tosupply water to the cooling water pas-sages. Avoid running the outboardmotor at high speed while on theflushing attachment, otherwise over-heating could occur. [ECM02001]

TIP:A flushing attachment is available from yourYamaha dealer.5. Run the engine at a fast idle for a few mi-

nutes in neutral while supplying fresh wa-ter. WARNING! Do not touch orremove electrical parts when startingor during operation. Keep hands, hair,

1. Flushing attachment

1

ZMU08002



Maintenance

73

and clothes away from the flywheeland other rotating parts while the en-gine is running. [EWM00092]

TIP:When using the flushing attachment, main-

tain adequate water pressure so that thereis a steady flow of water from the coolingwater pilot hole.

If the overheat alert device is activated, turnthe engine off, and consult your Yamahadealer.

6. Just prior to turning off the engine, quick-ly spray “Yamaha Stor-Rite Engine Fog-ging Oil” into the intake silencer. Whenproperly done, the engine will smoke ex-cessively and almost stall.

7. Turn off the water supply, and then re-move the flushing attachment and wipeoff any excess water.

8. Install the top cowling and propeller.9. Drain the cooling water completely out of

the outboard motor. Clean the exterior ofthe outboard motor thoroughly.

EMU41072

Lubrication1. Change the gear oil. For instructions, see

page 87. Check the gear oil for the pres-ence of water that indicates a leaky seal.Seal replacement should be performedby an authorized Yamaha dealer prior touse.

2. Lubricate all grease fittings. For furtherdetails, see page 79.

TIP:For long-term storage, fogging the enginewith fogging oil is recommended. Contactyour Yamaha dealer for information aboutfogging oil and procedures for your outboardmotor.EMU30269

Cleaning and anticorrosion measures1. Wash down the exterior of the outboard

motor with fresh water and dry off com-pletely. NOTICE: Do not spray waterinto the air intake. [ECM01841] For further in-formation, see page 74.

2. Spray the outboard motor exterior with“Yamaha Silicone Protectant”. NOTICE:Do not spray when the engine is run-ning. Also, do not spray near the si-lencer or into the engine. Otherwisethe engine could be damaged. [ECM01403]

3. Wax the cowling with a non-abrasivewax such as “Yamalube ProfessionalPolish”.

EMU40964

Flushing cooling water passagePerform this procedure right after operationfor the most thorough flushing.

NOTICEECM01531

Do not perform this procedure while theengine is running. The water pump may bedamaged and severe damage from over-heating can result.

1. Disconnect the garden hose connectorfrom the fitting on the bottom cowling.

ZMU08155



Maintenance

74

2. Connect the garden hose to the gardenhose connector.

3. With the engine off, turn on the watersupply and let the water flush throughthe cooling water passages for about 15minutes.

4. Turn off the water supply, and then dis-connect the garden hose from the gar-den hose connector.

5. Connect the garden hose connector tothe fitting on the bottom cowling andtighten it securely. NOTICE: If the gar-den hose connector is not properly

connected, cooling water can leak outand the engine can overheat duringoperation. [ECM01802]

TIP:When flushing the cooling water passageswith the boat in the water, tilting the outboardmotor up until it is completely out of the waterwill achieve better results.EMU44342

Cleaning the outboard motorWhen cleaning the outboard motor, the topcowling must be installed.1. Wash the exterior of the outboard motor

using fresh water. NOTICE: Do notspray water into the air intake. [ECM01841]

2. Drain the cooling water completely out ofthe outboard motor. Clean the bodythoroughly.

EMU28463

Checking painted surface of outboard motorCheck the outboard motor for scratches,nicks, or flaking paint. Areas with damagedpaint are more likely to corrode. If necessary,clean and paint the areas. Touch-up paint isavailable from your Yamaha dealer.

1. Fitting2. Garden hose connector

1. Garden hose2. Garden hose adapter (commercially avail-

able)3. Garden hose connector

2 1

ZMU07773

23 1

ZMU07774

1. Air intake

1

ZMU07856



Maintenance

75

EMU44952

Periodic maintenance

WARNINGEWM01872

These procedures require mechanicalskills, tools, and supplies. If you do nothave the proper skills, tools, or supplies toperform a maintenance procedure, have aYamaha dealer or other qualified mechan-ic do the work.The procedures involve disassembling themotor and exposing dangerous parts. Toreduce the risk of injury from moving, hot,or electrical parts: Turn off the engine and keep the key(s)

and engine shut-off cord (lanyard) withyou when you perform maintenance un-less otherwise specified.

The power trim and tilt switches operateeven when the ignition key is off. Keeppeople away from the switches whenev-er working around the motor. When themotor is tilted, keep away from the areaunder it or between it and the clampbracket. Be sure no one is in this areabefore operating the power trim and tiltmechanism.

Allow the engine to cool before handlinghot parts or fluids.

Always completely reassemble the mo-tor before operation.

Maintenance, replacement, or repair ofthe emission control devices and systemsmay be performed by any marine enginerepair establishment or individual. All war-ranty repairs, however, including those tothe emission control system, must be per-formed by an authorized Yamaha marinedealership.For North America:

A service manual is available for purchasethrough your Yamaha dealer for owners whohave the mechanical skills, tools, and otherequipment necessary to perform mainte-nance not covered by this owner’s manual.EMU28512

Replacement partsIf replacement parts are necessary, use onlygenuine Yamaha parts or parts of equivalentdesign and quality. Any part of inferior qualitymay malfunction, and the resulting loss ofcontrol could endanger the operator and pas-sengers. Yamaha genuine parts and acces-sories are available from your Yamaha dealer.EMU35522

Maintenance interval guidelinesThe service intervals provided in the Mainte-nance Chart were developed based upon“typical” use that includes operating at variedspeeds, with sufficient time for engine warmup and cool-down, a medium to light load,and an average cruising speed near the 3000to 4000 rpm range. As with any engine, how-ever, if your normal operating conditions aredifferent, you should consider service moreoften than shown, especially how often youchange your engine oil and gear oil. Exam-ples might include extended wide-open-throttle use or long periods of trolling oridling, carrying heavy loads, or frequent start-ing and stopping or shifting. More frequentmaintenance will often pay off many timesover in increased engine life and greater own-er satisfaction. Consult your Yamaha dealerfor additional maintenance recommenda-tions.



Maintenance

76

EMU46073

Maintenance chart 1TIP:Refer to the sections in this chapter for explanations of each owner-specific action. The maintenance cycle on these charts assume usage of 100 hours per year and regular

flushing of the cooling water passages. Maintenance frequency should be adjusted whenoperating the engine under adverse conditions such as extended trolling.

Disassembly or repairs may be necessary depending on the outcome of maintenancechecks.

Expendable or consumable parts and lubricants will lose their effectiveness over time andthrough normal usage regardless of the warranty period.

When operating in salt water, muddy, other turbid (cloudy), acidic water, the engine shouldbe flushed with clean water after each use.

The “ ” symbol indicates the check-ups which you may carry out yourself.The “ ” symbol indicates work to be carried out by your Yamaha dealer.

Item Actions

Initial Every

Page20 hours (3

months)

100 hours (1 year)

300 hours (3 years)

500 hours (5 years)

Anode(s) (external)Inspection or re-placement as nec-essary

89

Anode(s) (internal) *1

Inspection or re-placement as nec-essary

—

Anode(s) (internal) *2 Replacement —

Battery (electro-lyte level, terminal) Inspection 89

Battery (electro-lyte level, terminal)

Fill, charging or re-placing as neces-sary

—

Cooling water leakage


—

Cowling lock lever Inspection 54, 56

Engine starting condition/noise Inspection 59

Engine idle speed/noise Inspection 81

Engine oil Replacement 81

Engine oil filter (cartridge) Replacement 84



Maintenance

77

Fuel filter (can be disassembled)


55

Fuel line (High pressure) Inspection —

Fuel line (High pressure)


—

Fuel line (Low pressure) Inspection —

Fuel line (Low pressure)


—

Fuel pump Inspection or re-placement as nec-essary

—

Fuel/engine oil leakage Inspection —

Gear oil Replacement 87

Greasing points Greasing 79

Clamp bracket bolt (through tube)

Inspection and greasing —

Impeller/water pump housing


—

Impeller/water pump housing Replacement —

Power trim and tilt unit Inspection 57

Propeller/propeller nut/cotter pin


85

PCV (Pressure Control Valve)


—

Shift link/shift ca-ble

Inspection, adjust-ment or replace-ment as necessary

—

Spark plug(s)Inspection or re-placement as nec-essary

80

Item Actions

Initial Every

Page20 hours (3

months)

100 hours (1 year)

300 hours (3 years)

500 hours (5 years)



Maintenance

78

EMU46040

*1 exhaust cover*2 cylinder head, exhaust cover, cylinder blockEMU46082

Maintenance chart 2

Spark plug caps/spark plug wires


—

Shift Dampener System (SDS) pro-peller damper

Inspection or re-placement —

Water from the cooling water pilot hole

Inspection 61

Throttle link/throt-tle cable

Inspection, adjust-ment or replace-ment as necessary

—

ThermostatInspection or re-placement as nec-essary

—

Timing beltInspection or re-placement as nec-essary

—

Valve clearance Inspection and ad-justment —

Cooling water inlet Inspection 24

Main switch/stop switch


—

Wire harness con-nections/wire cou-pler connections


—

(Yamaha) Me-ter/gauge Inspection —

Item ActionsEvery

Page1000 hours

Exhaust guide/ex-haust manifold


—

Timing belt Replacement —

Item Actions

Initial Every

Page20 hours (3

months)

100 hours (1 year)

300 hours (3 years)

500 hours (5 years)



Maintenance

79

EMU41303

GreasingYamalube Marine Grease

ZMU01796



Maintenance

80

EMU46451

Inspecting spark plugThe spark plug is an important engine com-ponent. The condition of the spark plug canindicate something about the condition of theengine. For example, if the center electrodeporcelain is very white, this could indicate anintake air leak or carburetion problem in thatcylinder. Do not attempt to diagnose anyproblems yourself. Instead, take the out-board motor to a Yamaha dealer. You shouldperiodically remove and check the spark plugbecause heat and deposits will cause thespark plug to slowly break down and erode.To remove the spark plug1. Remove the cover.

2. Remove the spark plug cap from thespark plug.

3. Remove the spark plug. WARNING!When removing or installing a sparkplug, be careful not to damage the in-sulator. A damaged insulator could al-low external sparks, which could leadto explosion or fire. [EWM00562]

To check the spark plug1. Check the condition of the spark plug. If

electrode erosion becomes excessive orcarbon and other deposits are exces-sive, replace the spark plug with thespecified plug.

2. Measure the spark plug gap using athickness gauge. If the spark plug gap isout of specification, replace the sparkplug with the specified plug.

1. Cover

1

ZMU08243

1. Spark plug cap

Standard spark plug:LFR5A-11

1

ZMU08245

ZMU08251



Maintenance

81

To install the spark plug1. Wipe off any dirt from the threads, insu-

lator, and gasket surface of the sparkplug.

2. Install the spark plug, and then tighten itto the specified torque.

TIP:If a torque-wrench is not available when youare reinstalling a spark plug, a good estimateof the correct torque is 1/12 turn past finger-tight. When you are installing a new sparkplug, a good estimate of the correct torque is1/2 to 2/3 turn past finger-tight.3. Install the spark plug cap.4. Install the cover.EMU29045

Inspecting idle speed

WARNINGEWM00452

Do not touch or remove electrical partswhen starting or during operation.

Keep hands, hair, and clothes awayfrom the flywheel and other rotatingparts while the engine is running.

NOTICEECM00491

This procedure must be performed whilethe outboard motor is in the water. A flush-ing attachment or test tank can be used.

If the boat is not equipped with a tachometerfor the outboard motor, use a diagnostic ta-chometer for this procedure. Results mayvary depending on whether testing is con-ducted with the flushing attachment, in a testtank, or with the outboard motor in the water.1. Start the engine and allow it to warm up

fully in neutral until it is running smoothly.2. Once the engine has warmed up, verify

whether the idle speed is set to specifi-cation. For idle speed specifications, seepage 15. If you have difficulty verifyingthe idle speed, or the idle speed requiresadjustment, consult a Yamaha dealer orother qualified mechanic.

EMU38808

Changing engine oil

WARNINGEWM00761

Avoid draining the engine oil immediate-ly after stopping the engine. The oil ishot and should be handled with care toavoid burns.

Be sure the outboard motor is securelyfastened to the transom or a stablestand.

NOTICEECM01711

Change the engine oil after the first 20hours of operation or 3 months, and every100 hours or at 1-year intervals thereafter.Otherwise the engine will wear quickly.

1. Spark plug gap2. Spark plug part number3. Spark plug I.D. mark (NGK)

Spark plug gap:1.0–1.1 mm (0.039–0.043 in)

Spark plug tightening torque:25 N·m (2.5 kgf·m, 18 lb·ft)



Maintenance

82

To prevent spilling oil where it could causedamage to nature, it is strongly recommend-ed that you use an oil changer to change theengine oil. If an oil changer is not available,drain the engine oil by removing the drainscrew. If you are not familiar with the proce-dure for changing the engine oil, consult yourYamaha dealer.1. Put the outboard motor in an upright po-

sition (not tilted). NOTICE: If the out-board motor is not level, the oil levelindicated on the oil dipstick may notbe accurate. [ECM01862]

2. Start the engine. Warm it up and keepthe idle speed for 5-10 minutes.

3. Stop the engine and leave it for 5-10 mi-nutes.

4. Remove the top cowling.5. Remove the oil filler cap. Pull out the dip-

stick and use the oil changer to extractthe oil completely.

TIP:When using an oil changer, skip steps 6 and7.6. Prepare a suitable container that holds a

larger amount than the engine oil capac-ity. Remove the drain screw and gasketwhile holding the container under thedrain hole. Let the oil drain completely.Wipe up any spilled oil immediately.

ZMU07866

1. Oil filler cap

1. Oil changer

1

ZMU04753

1ZMU06183



Maintenance

83

TIP:If the oil does not drain easily, change the tiltangle or turn the outboard motor to port andstarboard to drain the oil.7. Put a new gasket on the oil drain screw.

Apply a light coat of oil to the gasket andinstall the drain screw.

TIP:If a torque wrench is not available when youare installing the drain screw, finger tightenthe screw just until the gasket comes intocontact with the surface of the drain hole.Then tighten 1/4 to 1/2 turn more. Tighten thedrain screw to the correct torque with atorque wrench as soon as possible.8. Add the correct amount of oil through the

filler hole. Put back the filler cap and thedipstick. NOTICE: Overfilling the oilcould cause leakage or damage. If theoil level is above the upper level mark,drain until the level meets the speci-fied capacity. [ECM01851]

9. Leave the outboard motor for 5-10 minu-tes.

10. Remove the oil dipstick and wipe itclean.

11. Insert the dipstick and remove it again.Be sure to completely insert the dipstickinto the dipstick guide, otherwise the oillevel measurement will be incorrect.

12. Recheck the oil level using the dipstick tobe sure the level falls between the upperand lower marks. Consult your Yamahadealer if the oil level is out of specifiedlevel.

13. Start the engine and make sure that thelow oil pressure-alert indicator remainsoff. Also, make sure that there are no oilleaks. NOTICE: If the low oil pressure-alert indicator comes on or if there areoil leaks, stop the engine and find thecause. Continued operation with a

1. Drain screw2. Gasket

Drain screw tightening torque:27 N·m (2.7 kgf·m, 20 lb·ft)

2

1ZMU01836

Recommended engine oil:YAMALUBE 4M FC-W or 4-stroke outboard motor oilEngine oil quantity (without oil filter replacement):

4.3 L (4.55 US qt, 3.78 Imp.qt)Engine oil quantity (with oil filter re-placement):

4.5 L (4.76 US qt, 3.96 Imp.qt)

1. Oil dipstick2. Lower mark3. Upper mark

1 3

2

ZMU07056



Maintenance

84

problem could cause severe enginedamage. Consult your Yamaha dealerif the problem cannot be located andcorrected. [ECM01623]

14. Install the top cowling.15. Dispose of used oil according to local

regulations.

TIP: For more information on the disposal of

used oil, consult your Yamaha dealer.Change the oil more often when operating

the engine under adverse conditions suchas extended trolling.

EMU48110

Replacing the engine oil filter

WARNINGEWM00761

Avoid draining the engine oil immediate-ly after stopping the engine. The oil ishot and should be handled with care toavoid burns.

Be sure the outboard motor is securelyfastened to the transom or a stablestand.

Yamaha recommends you to have a Yamahadealer replace the engine oil filter.If you perform replacement yourself, followthe procedure below. If you have any ques-tions, please consult a Yamaha dealer.1. Drain the engine oil. For further informa-

tion, see page 81.2. Place a cloth under the engine oil filter.3. Turn the engine oil filter counterclock-

wise and remove it.

TIP:Wipe up any spilled engine oil.Dispose of the removed engine oil filter in

accordance with local regulations.4. Apply engine oil to the O-ring of the en-

gine oil filter.

5. Turn the engine oil filter clockwise andtighten it to the specified torque.

1. O-ring

1



Maintenance

85

6. Fill up the engine with engine oil. For fur-ther information, see page 81.

EMU48060

Why YamalubeYAMALUBE oil is a Genuine YAMAHA Partborn of the engineers’ passion and belief thatengine oil is an important liquid engine com-ponent. We form teams of specialists in thefields of mechanical engineering, chemistry,electronics and track testing, and have themdevelop the engine together with the oil it willuse. Yamalube oils take full advantage of thebase oil’s qualities and blend in the ideal ba-lance of additives to make sure the final oilclears our performance standards. Thus,Yamalube mineral, semisynthetic and syn-thetic oils have their own distinct charactersand value. Yamaha’s experience gained overmany years of research and developmentinto oil since the 1960’s helps makeYamalube the best choice for your Yamahaengine.

EMU29116

Inspecting wiring and connectors Inspect that each connector is engaged se-

curely. Inspect that each ground lead is properly

secured.

EMU32113

Checking propeller

WARNINGEWM01882

You could be seriously injured if the en-gine accidentally starts when you are nearthe propeller. Before inspecting, remov-ing, or installing the propeller, place theshift control in neutral, turn the mainswitch to “ ” (off) and remove the key,

Engine oil filter:18 N·m (1.8 kgf·m, 13 lb·ft)

ZMU08262

ZMU08263



Maintenance

86

and remove the clip from the engine shut-off switch. Turn off the battery cut-offswitch if your boat has one.

Do not use your hand to hold the propellerwhen loosening or tightening the propellernut. Put a wood block between the anti-cavi-tation plate and the propeller to prevent thepropeller from turning.

CheckpointsCheck each of the propeller blades for ero-

sion from cavitation or ventilation, or otherdamage.

Check the propeller shaft for damage.Check the splines for wear or damage.Check for fish line tangled around the pro-

peller shaft.

Check the propeller shaft oil seal for dam-age.

EMU42632

Removing propeller1. Straighten the cotter pin and pull it out

using a pair of pliers.2. Remove the propeller nut, washer, and

spacer. WARNING! Do not use yourhand to hold the propeller when loos-ening the propeller nut. [EWM01891]

3. Remove the propeller, spacer (ifequipped), and thrust washer.

EMU42646

Installing propeller

WARNINGEWM00771

On counter rotation models, be sure touse a propeller intended for counterclock-wise rotation. These propellers are identi-fied with the letter “L” after the sizeindication on the propeller. Otherwise theboat could move in the opposite directionfrom that expected.

ZMU07854

ZMU08131

1. Cotter pin2. Propeller nut3. Washer4. Spacer5. Propeller6. Thrust washer

ZMU07900

4 3 2

1

56



Maintenance

87

NOTICEECM00502

Make sure to use a new cotter pin andbend the ends over securely. Otherwise,the propeller could come off during oper-ation and be lost.

1. Apply Yamalube Marine Grease or a cor-rosion resistant grease to the propellershaft.

2. Install the thrust washer, spacer (ifequipped), and propeller on the propellershaft. NOTICE: Make sure to install thethrust washer before installing thepropeller. Otherwise, the lower caseand propeller boss could be damaged.[ECM01882]

3. Install the spacer, washer, and propellernut. Tighten the propeller nut to thespecified torque.

4. Align the propeller nut slot with the pro-peller shaft hole. Insert a new cotter pinin the hole and bend the cotter pin ends.

NOTICE: Do not reuse the cotter pin.Otherwise, the propeller can come offduring operation. [ECM01892]

TIP:If the propeller nut slot does not align with thepropeller shaft hole after tightening the pro-peller nut to the specified torque, tighten thenut further to align the slot with the hole.EMU47100

Changing gear oil

WARNINGEWM00801

Be sure the outboard motor is securelyfastened to the transom or a stablestand. You could be severely injured ifthe outboard motor falls on you.

Never get under the lower unit while it istilted, even when the tilt support lever orknob is locked. Severe injury could oc-cur if the outboard motor accidentallyfalls.

1. Tilt the outboard motor so that the gearoil drain screw is at the lowest point pos-sible.

2. Place a suitable container under the gearcase.

3. Remove the gear oil drain screw andgasket. The screw is magnetic so a smallquantity of metal particles on the end ofthe screw is normal. Simply remove

1. Cotter pin2. Propeller nut3. Washer4. Spacer5. Propeller6. Thrust washer

Propeller nut tightening torque:54 N·m (5.4 kgf·m, 40 lb·ft)

4 3 2

1

56

ZMU07899

1. Cotter pin

1

ZMU06956



Maintenance

88

them. NOTICE: If there is an excessivequantity of metal particles on themagnetic gear oil drain screw, thiscan indicate lower unit problem. Con-sult your Yamaha dealer. [ECM01901]

TIP:Always use new gaskets. Do not reuse the re-moved gaskets.4. Remove the oil level plug and gasket to

allow the oil to drain completely.NOTICE: Check the used gear oil afterit has been drained. If the gear oil ismilky or contains water or a largeamount of metal particles, the gearcase may be damaged. Have aYamaha dealer check and repair theoutboard motor. [ECM00714]

TIP:For disposal of used oil, consult your Yamahadealer.5. Put the outboard motor in a vertical posi-

tion. Using a flexible or pressurized fillingdevice, inject the gear oil into the gear oildrain screw hole.

6. Put a new gasket on the oil level plug.When the oil begins to flow out of the oillevel plug hole, insert and tighten the oillevel plug to the specified torque.

TIP:Apply a light coat of gear oil to the oil levelplug thread and gasket before installation.

7. Put a new gasket on the gear oil drainscrew. Insert and tighten the gear oildrain screw to the specified torque.

1. Gear oil drain screw2. Gasket

1. Gasket2. Oil level plug

12

ZMU07781

2

1

ZMU07782

Recommended gear oil:Yamalube Marine Gearcase Lube HD or Hypoid gear oil

Recommended gear oil grade:SAE 90 API GL-4 / SAE 80W API GL-5 / SAE 90 API GL-5

Gear oil quantity:0.980 L (1.036 US qt, 0.862 Imp.qt)

Tightening torque:7 N·m (0.7 kgf·m, 5.2 lb·ft)

ZMU07783



Maintenance

89

TIP:Apply a light coat of gear oil to the gear oildrain screw thread and gasket before instal-lation.

EMU29318

Inspecting and replacing anode(s)Yamaha outboard motors are protected fromcorrosion by sacrificial anodes. Inspect theexternal anodes periodically. Remove scalesfrom the surfaces of the anodes. Consult aYamaha dealer for replacement of externalanodes.

NOTICEECM00721

Do not paint anodes, as this would renderthem ineffective.

TIP:Inspect ground leads attached to external an-odes on equipped models. Consult aYamaha dealer for inspection and replace-ment of internal anodes attached to the pow-er unit.EMU29324

Checking battery (for electric start models)

WARNINGEWM01903

Battery electrolyte is poisonous and caus-tic, and batteries generate explosive hy-drogen gas. When working near thebattery:Wear protective eye gear and rubber

gloves.Do not smoke or bring any other source

of ignition near the battery.

The procedure for checking the battery variesfor different batteries. This procedure con-tains typical checks that apply to many bat-teries, but you should always refer to thebattery manufacturer’s instructions.

NOTICEECM01921

A poorly maintained battery will quicklydeteriorate.

1. Check the electrolyte level.

Tightening torque:7 N·m (0.7 kgf·m, 5.2 lb·ft)

1. Anode

1

ZMU08270

1. Anode

1

ZMU08268



Maintenance

90

2. Check the battery’s charge. If your boatis equipped with the digital speedome-ter, the voltmeter and low battery alertfunctions will help you monitor the bat-tery’s charge. If the battery needs charg-ing, consult your Yamaha dealer.

3. Check the battery connections. Theyshould be clean, secure, and covered byan insulating cover. WARNING! Badconnections can produce shorting orarcing and cause an explosion. [EWM01913]

EMU35496

Connecting the battery

WARNINGEWM00573

Mount the battery holder securely in a dry,well-ventilated, vibration-free location inthe boat. Install a fully charged battery inthe holder.

NOTICEECM01125

Do not reverse the battery cables. Other-wise, the electrical parts could be dam-aged.

1. Make sure the main switch (on applica-ble models) is “ ” (off) before workingon the battery.

2. Connect the red battery cable to thePOSITIVE (+) terminal first. Then connectthe black battery cable to the NEGATIVE(-) terminal.

3. The electrical contacts of the battery andcables must be clean and properly con-nected, or the battery will not start theengine.

Connecting an accessory battery (optional) If connecting an accessory battery, consultyour Yamaha dealer about correct wiring. Forthe fuse size, see ABYC (E-11).

1. Red cable2. Black cable3. Battery

ZMU01811

1

23



Maintenance

91

Single engine Twin engines

EMU29372

Disconnecting the battery1. Turn off the battery cut-off switch (if

equipped) and main switch. NOTICE: Ifthey are left on, the electrical systemcan be damaged. [ECM01931]

2. Disconnect the negative cable(s) fromthe negative (-) terminal. NOTICE: Al-ways disconnect all negative (-) cablesfirst to avoid a short circuit and dam-age to the electrical system. [ECM01941]

3. Disconnect the positive cable(s) and re-move the battery from the boat.

1. Isolator lead with circuit protection2. Red cable3. Black cable4. Fuse5. Battery for accessories6. Battery for starting7. Negative connecting cable

2 1

7

6 5

3

4

ZMU05939

1. Starboard side engine2. Port side engine3. Red cable4. Black cable5. Isolator leads with circuit protection6. Fuse7. Battery for starting8. Battery for accessories9. Negative connecting cable

ZMU05941

1

3

9

34

6

4

2

5

7 8 7



Maintenance

92

4. Clean, maintain, and store the batteryaccording to the manufacturer’s instruc-tions.



Trouble Recovery

93

EMU47140

TroubleshootingThis section describes the likely causes andremedies for problems, such as those in thefuel, compression, and ignition systems, poorstarting, and loss of power. Please note thatall of the items in this section may not applyto your model.If your outboard motor requires repair, bringit to a Yamaha dealer.If the engine trouble-alert indicator is blinking,consult your Yamaha dealer.

Starter will not operate.Q. Is remote control lever in gear?A. Shift to neutral.

Q. Is battery capacity low or weak?A. Check battery condition. Use battery ofrecommended capacity.

Q. Are battery connections corroded orloose?A. Tighten battery cables and clean batteryterminals.

Q. Is fuse for starter relay or electric circuitblown?A. Check for cause of electric overload andrepair. Replace fuse with one of correct am-perage.

Q. Are starter components malfunctioning?A. Have serviced by a Yamaha dealer.

Engine will not start (starter operates).Q. Is clip on engine shut-off cord (lanyard) in-stalled?A. Install clip to engine shut-off switch.

Q. Is fuel tank empty?

A. Fill tank with clean, fresh fuel.

Q. Is fuel contaminated or stale?A. Fill tank with clean, fresh fuel.

Q. Is fuel filter clogged?A. Clean or replace fuel filter.

Q. Is starting procedure incorrect?A. See page 60.

Q. Is fuel pump malfunctioning?A. Have serviced by a Yamaha dealer.

Q. Are spark plugs fouled or of incorrect ty-pe?A. Inspect spark plugs. Clean or replace withrecommended type.

Q. Are spark plug caps fitted incorrectly?A. Check and re-fit caps.

Q. Are ignition parts malfunctioning?A. Have serviced by a Yamaha dealer.

Q. Is ignition wiring damaged or poorly con-nected?A. Inspect wires for breaks and wear. Haveconnections tightened and broken or wornwires replaced by a Yamaha dealer.

Q. Are engine inner parts damaged?A. Have serviced by a Yamaha dealer.

Engine idles irregularly or stalls.Q. Are spark plugs fouled or of incorrect ty-pe?A. Inspect spark plugs. Clean or replace withrecommended type.

Q. Is fuel system clogged?



Trouble Recovery

94

A. Inspect for pinched or kinked fuel line orother obstructions in fuel system.


Q. Is fuel filter clogged?A. Clean or replace fuel filter.

Q. Are ignition parts malfunctioning?A. Have serviced by a Yamaha dealer.

Q. Has alert system activated?A. Find and correct cause of alert.

Q. Is spark plug gap incorrect?A. Replace spark plug.


Q. Is specified engine oil not being used?A. Inspect engine oil and replace with speci-fied type.

Q. Is thermostat clogged or malfunctioning?A. Have serviced by a Yamaha dealer.


Q. Is fuel tank air vent restricted or clogged?A. Remove obstruction.

Q. Is outboard motor angle too high?A. Return to normal operating position.

Q. Is fuel joint connection incorrect?

A. Connect correctly.

Q. Is throttle cable adjustment incorrect?A. Have serviced by a Yamaha dealer.

Q. Is battery cable disconnected?A. Connect securely.

Alert buzzer sounds or indicator lights.Q. Is cooling system clogged?A. Inspect cooling water inlet for obstruc-tions.

Q. Is low oil pressure-alert indicator on orblinking?A. Have serviced by a Yamaha dealer.

Q. Is heat range of spark plugs incorrect?A. Inspect spark plugs and replace with rec-ommended type.

Q. Is specified engine oil not being used?A. Inspect engine oil and replace with speci-fied type.

Q. Is engine oil contaminated or deteriorat-ed?A. Replace engine oil with specified type.

Q. Is oil filter clogged?A. Have serviced by a Yamaha dealer.

Q. Is oil pump malfunctioning?A. Have serviced by a Yamaha dealer.

Q. Is load on boat improperly distributed? A. Distribute load to place boat on an evenplane.

Q. Is thermostat or water pump malfunction-ing?



Trouble Recovery

95

A. Have serviced by a Yamaha dealer.

Q. Is there excess water in fuel filter?A. Drain fuel filter.

Engine power loss.Q. Is propeller damaged?A. Have propeller repaired or replaced.

Q. Is propeller pitch or diameter incorrect?A. Install correct propeller to operate out-board motor at its recommended speed(r/min) range.

Q. Is outboard motor mounted at incorrectheight on transom?A. Have outboard motor adjusted to propertransom height.

Q. Has alert system activated?A. Find and correct cause of alert.

Q. Is boat bottom fouled with marine growth?A. Clean boat bottom.

Q. Are spark plugs fouled or of incorrect ty-pe?A. Inspect spark plugs. Clean or replace withrecommended type.

Q. Are weeds or other foreign material tan-gled on gear housing?A. Remove foreign material and clean lowerunit.

Q. Is fuel system clogged?A. Inspect for pinched or kinked fuel line orother obstructions in fuel system.

Q. Is fuel filter clogged?

A. Clean or replace fuel filter.


Q. Is spark plug gap incorrect?A. Replace spark plug.


Q. Are electrical parts malfunctioning?A. Have serviced by a Yamaha dealer.

Q. Is specified fuel not being used?A. Replace fuel with specified type.

Q. Is specified engine oil not being used?A. Replace engine oil with specified type.

Q. Is thermostat clogged or malfunctioning?A. Have serviced by a Yamaha dealer.

Q. Is fuel tank air vent restricted or clogged?A. Remove obstruction.


Q. Is fuel joint connection incorrect?A. Connect correctly.

Q. Is heat range of spark plugs incorrect?A. Inspect spark plugs and replace with rec-ommended type.

Q. Is engine not responding properly to re-mote control lever position?



Trouble Recovery

96

A. Have serviced by a Yamaha dealer.

Engine vibrates excessively.Q. Is propeller damaged?A. Have propeller repaired or replaced.

Q. Is propeller shaft damaged?A. Have serviced by a Yamaha dealer.

Q. Are weeds or other foreign material tan-gled on propeller?A. Remove and clean propeller.

Q. Are outboard motor mounting bolts loose?A. Tighten bolts or have serviced by aYamaha dealer.

Q. Is steering pivot loose or damaged?A. Have serviced by a Yamaha dealer.EMU29435

Temporary action in emergen-cy

EMU29442

Impact damage

WARNINGEWM00871

The outboard motor can be seriouslydamaged by a collision while operating ortrailering. Damage could make the out-board motor unsafe to operate.

If the outboard motor hits an object in the wa-ter, follow the procedure below.

1. Stop the engine immediately.2. Check the control system and all compo-

nents for damage. Also, check the boatfor damage.

3. Whether damage is found or not, returnto the nearest harbor slowly and careful-ly.

4. Have a Yamaha dealer check the out-board motor before operating it again.

EMU29454

Running single engine (twin engines)When using only one engine in an emergen-cy, be sure to keep the unused one tilted upand operate the other engine at low speed.

NOTICEECM00371

If the boat is operated with one engine inthe water but not running, water may runinto the exhaust pipe due to wave action,causing engine trouble.

TIP:When you are maneuvering at low speed,such as near a dock, it is recommended thatboth engines be running with one in neutralgear if possible.



Trouble Recovery

97

EMU46760

Replacing fuse

WARNINGEWM00632

Substituting an incorrect fuse or a piece ofwire could allow excessive current flow.This could cause electric system damageand a fire hazard.

If a fuse has blown, replace the fuse accord-ing to the following procedure.1. Turn the main switch to the “ ” (off)

position.2. Remove the fuse box cover.3. When replacing the engine main fuse or

isolator fuse, remove the screws, andthen remove the fuse. Install the spareengine main fuse, and then tighten thescrews.

4. When replacing a fuse other than the en-gine main fuse or isolator fuse, removethe fuse using the fuse puller. Install aspare fuse of the proper amperage.

Consult your Yamaha dealer if the new fuseimmediately blows again.EMU29526

Power trim and tilt will not operateIf the engine cannot be tilted up or down withthe power trim and tilt because of a dis-charged battery or a failure with the powertrim and tilt unit, the engine can be tilted man-ually.1. Loosen the manual valve screw by turn-

ing it counterclockwise until it stops.

2. Put the engine in the desired position,then tighten the manual valve screw byturning it clockwise.

1. Fuse box cover2. Fuse puller3. Spare engine main fuse (50 A)4. Isolator fuse (50 A)5. Engine main fuse (50 A)6. Main switch / trim switch fuse (20 A)7. Engine control unit / ignition coil / electric

fuel pump / fuel injector / ISC (idle speed control) fuse (20 A)

8. Spare fuse (20 A, 30 A)9. Starter relay fuse (30 A)10.Screw

10

7

45 2

9

3

1

10

8

6

ZMU01816

1. Fuse puller

1. Manual valve screw

1

ZMU04337



Trouble Recovery

98

EMU43572

Water separator alert is activated af-ter leaving port

WARNINGEWM01501

Gasoline is highly flammable, and its va-pors are flammable and explosive.Do not perform this procedure on a hot

or running engine. Allow the engine tocool.

There will be fuel in the fuel filter. Keepaway from sparks, cigarettes, flames orother sources of ignition.

This procedure will allow some fuel tospill. Catch fuel in a rag. Wipe up anyspilled fuel immediately.

The fuel filter must be reassembledcarefully with the O-ring, filter cup, andhoses in place. Improper assembly orreplacement could result in a fuel leak,which could result in a fire or explosionhazard.

If the water separator-alert indicator blinks orthe buzzer sounds intermittently, perform thefollowing procedure.

1. Stop the engine.2. Remove the top cowling.3. Remove the holder.

4. Disconnect the water detection switchcoupler. NOTICE: Be careful not to getany water on the water detectionswitch coupler, otherwise a malfunc-tion could occur. [ECM01951]


11

ZMU05442

1. Holder

1. Water detection switch coupler

ZMU07859

1

ZMU05754

1

ZMU06222



Trouble Recovery

99

5. Unscrew the filter cup from the filterhousing. NOTICE: Be careful not totwist the water detection switch leadwhen unscrewing the filter cup. [ECM01961]

6. Drain the water in the filter cup by soak-ing it up with a rag.

7. Firmly screw the filter cup onto the filterhousing. NOTICE: Be careful not totwist the water detection switch leadwhen screwing the filter cup onto thefilter housing. [ECM01971]

8. Connect the water detection switch cou-pler securely until a click is heard.

9. Fasten the water detection switch leadwith the holder.

10. Install the top cowling.11. Place the remote control lever in neutral

and turn the main switch to “ ”(on).Make sure that the buzzer does notsound, or start the engine and make surethat the water separator-alert indicatorremains off. Have a Yamaha dealer in-spect the outboard motor after returningto port.

EMU33502

Treatment of submerged motorIf the outboard motor is submerged, immedi-ately take it to a Yamaha dealer. Otherwisesome corrosion may begin almost immedi-ately. NOTICE: Do not attempt to run theoutboard motor until it has been com-pletely inspected. [ECM00402]

1. Filter cup2. Water detection switch lead

1. Water detection switch coupler

12

ZMU05457

1

ZMU06223

1. Holder

1

ZMU05755



Consumer information (For North America)

100

EMU29837

YAMAHA FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY

ZMU07048

Yamaha Motor Corporation, U.S.A. and Yamaha Motor Canada Ltd. (“Yamaha”) hereby warrant that new Yamaha four-stroke outboard motors will be free from defects in material and workmanship for the period of time stated herein, subject to certain stated limitations.

PERIOD OF WARRANTY. Any new Yamaha four-stroke outboard motor purchased from an authorized Yamaha dealer in the customer’s country of residence (United States or Canada) and registered with Yamaha will be warranted against defects in material or workmanship, subject to exclusions noted herein, for the following applicable period determined by type of use:

The second and third year of warranty (if applicable) shall be limited to covering the cost of parts and labor for major components only. The major components covered are:

WARRANTY REGISTRATION. To be eligible for warranty coverage, the outboard motor must be registered with Yamaha in the country of residence. Warranty registration can be accomplished by any authorized Yamaha Outboard Motor Dealer.

OBTAINING REPAIRS UNDER WARRANTY. During the period of warranty, any authorized Yamaha Outboard Motor Dealer in the country of residence will, free of charge, repair or replace, at Yamaha’s option, any parts adjudged defective by Yamaha due to faulty workmanship or material from the factory. All replaced parts will become the property of Yamaha. If the customer is temporarily using a U.S.-registered outboard motor in Canada, or a Canada-registered outboard motor in the United States, and it needs warranty repairs, the owner should contact a nearby authorized Yamaha Outboard Motor Dealer for assistance. The local dealer will contact Yamaha on the owner’s behalf so that needed repairs can be made as quickly as possible.

CUSTOMER’S RESPONSIBILITY. Under the terms of this warranty, the customer will be responsible for ensuring that the outboard motor is properly operated, maintained, and stored as specified in the applicable Owner’s Manual. The owner of the outboard motor shall give notice to an authorized Yamaha Outboard Motor Dealer of any and all apparent defects within ten (10) days of discovery and make the motor available at that time for inspection and repairs at the dealer’s place of business.

Replacement parts used in warranty repairs will be warranted for the balance of the applicable warranty period.

• Pleasure use – three (3) years from the date of purchase.

Power Unit Section• Power Head• Intake Manifold• Carburetor Assembly and its Related Components• Fuel Injection System and its Related Components• Fuel and Oil Pump Assemblies• Ignition System (Standard and Microcomputer)Lower Unit Section Bracket Section• Exhaust System• Bracket System• Upper Casing• Power Trim and Tilt Assembly• Lower Unit Assembly

• Commercial application – one (1) year from the date of purchase. A commercial application is defined as any use of the outboard motor to generate income (excluding tournament fishing) or support business operations in any way during the warranty period, without regard to the type or percentage of commercial use. Yamaha reserves the right to modify incorrect registration data and reduce the warranty period to reflect commercial use.

• Yamaha peripheral equipment included with the motor, such as gauges, fuel tanks, and hoses, remote control boxes, and wiring external from the motor unit, will be warranted for one (1) year from the date of purchase for either pleasure or commercial use.




101

ZMU07047

SPECIFIC PARTS EXCLUDED FROM WARRANTY. Parts replaced due to normal wear or routine maintenance such as oil, spark plugs, shear pins, propellers, hubs, fuel and oil filters, brushes for the starter motor and power tilt motor, water pump impellers, and anodes, are not covered by warranty. Charges for removal of the motor from a boat and transporting the motor to and from an authorized Yamaha Outboard Motor Dealer are excluded from warranty coverage.

EMISSION CONTROL WARRANTY (United States only). Yamaha warrants to the ultimate purchaser and any subsequent owner, that the emission control components on this engine are designed, built and equipped so as to conform at the time of sale with applicable regulations under section 213 of the Clean Air Act and that this engine is covered against defects in materials and workmanship which cause said engine to fail to conform with applicable exhaust emission regulations for five (5) years from the date of purchase or 175 hours of operation, whichever comes first. Evaporative components (e.g., hoses, fuel tank, fuel cap) are two (2) years from the date of purchase. Some states have different emission control warranty provisions. As these vary from state to state, consult your Yamaha dealer or contact Yamaha Customer Relations at 1-866-894-1626 for more information.

TRANSFER OF WARRANTY Transfer of the warranty from the original purchaser to any subsequent purchaser is possible by having the motor inspected by an authorized Yamaha Outboard Motor Dealer and requesting the dealer to submit a change of registration to Yamaha within ten (10) days of the transfer.

THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE/PROVINCE TO PROVINCE.

YAMAHA MAKES NO OTHER WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WHICH EXCEED THE OBLIGATIONS AND TIME LIMITS STATED IN THIS WARRANTY ARE HEREBY DISCLAIMED BY YAMAHA AND EXCLUDED FROM THIS WARRANTY. SOME STATES/PROVINCES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU. ALSO EXCLUDED FROM THIS WARRANTY ARE ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDING LOSS OF USE. SOME STATES/PROVINCES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU.

GENERAL EXCLUSIONS FROM WARRANTY. This warranty will not cover the repair of damage if the damage is a result of abuse or neglect of the product. Examples of abuse and neglect include, but are not limited to:1. Racing or competition use, modification of original parts, abnormal strain.2. Lack of proper maintenance and off season storage as described in the Owner’s Manual; installation of parts or accessories that are

not equivalent in design and quality to genuine Yamaha parts.3. Operation of the motor at an rpm other than specified, use of lubricants or oils that are not suitable for outboard motor use.4. Damage as a result of accidents, collisions, contact with foreign materials, or submersion.5. Growth of marine organism on motor surfaces.6. Normal deterioration.

Specific parts excluded from the second and third year of warranty (if applicable) are:• Top and Bottom Cowling• Electric Components (other than ignition system)• Rubber Components (such as hoses, tubes, rubber seals, fittings, and clamps)




102

EMU29846

IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE U.S.A. OR CANADA

Welcome to the Yamaha Family!

Congratulations on the purchase of your new Yamaha products. Yamaha is commit-ted to exceptional customer satisfaction and we want your ownership experience to be a satisfying one. Please read the following warranty information to help ensure satisfaction with your Yamaha.

This model was manufactured with specifications appropriate for sale and use in the U.S.A. and Canada. Please note the following information:

Your Yamaha model may not be sold in some countries. Therefore, a Yamaha dealer outside the United States or Canada may not have all of the replacement parts or technical information available to provide proper service. This may unavoidably delay repairs. Thank you for your understanding should this happen.

TIP:

1. As explained in the Limited Warranty Statement, the Yamaha warranty covers your Yamaha when it is registered and used in your country of residence. If you are temporarily using a U.S.-registered outboard motor in Canada, or a Canada-registered outboard motor in the United States, and it needs warranty repairs, you should contact a nearby authorized Yamaha Outboard Motor Dealer for assistance. The local dealer will contact Yamaha on the owner’s behalf so that needed repairs can be made as quickly as possible.

2. If you need repairs while temporarily using your Yamaha in another country, contact the local authorized Yamaha distributor for that country. Yamaha will work with that distributor to make the needed repairs as quickly as possible. If you have to pay for a repair that you believe your warranty would have covered at home, present all repair orders, receipts, or other related documents to your local dealer when you return home. He will be able to contact Yamaha on your behalf to see if any refund can be provided.

3. If your Yamaha is registered or used primarily outside the United States or Canada, the warranty printed in this manual does not apply to you. Contact the dealer who sold the Yamaha marine power unit to you for customer support information.

ZMU05199



103

INDEX

6Y8 Multifunction meters...................... 436YC Multifunction meter....................... 40

AAccident reporting .................................. 4Alcohol and drugs................................... 2Alert system.......................................... 47Anode(s), inspecting and replacing ...... 89Anti-fouling paint .................................. 21Approval label of emission control

certificate............................................ 22Avoid collisions....................................... 3

BBasic boating rules (Rules of the road)... 5Battery .................................................. 58Battery, checking (electric start

models)............................................... 89Battery, connecting .............................. 90Battery, disconnecting.......................... 91Battery requirements ............................ 16Boat education and training ................... 4Boat horsepower rating ........................ 16Boating organizations............................. 5Boating safety......................................... 2Boating safety publications .................... 4Breaking in engine ................................ 53

CCarbon monoxide................................... 2CE Marking ........................................... 10Checks after engine warm up............... 62Checks after starting engine................. 61Checks before starting engine.............. 53Cleaning and anticorrosion

measures............................................ 73Cleaning the outboard motor ............... 74Clock .................................................... 36Collisions with floating or submerged

objects.................................................. 3Compliance mark label ......................... 11Components diagram........................... 24Control functions, checking.................. 55Cooling water ....................................... 61

Cowling lock lever................................. 33

DDigital speedometer.............................. 35Digital tachometer ................................ 34

EEC Declaration of Conformity (DoC)..... 10Electric shock ......................................... 1Emergency equipment.......................... 22Emergency, running single engine in

an........................................................ 96Emergency, temporary action in........... 96Emission control information ................ 22Engine, checking .................................. 56Engine data recording .......................... 14Engine oil .............................................. 55Engine oil, changing ............................. 81Engine oil, filling.................................... 53Engine oil requirements ........................ 18Engine shut-off cord (lanyard) .......... 1, 55Engine shut-off cord (lanyard) and

clip ...................................................... 29

FFilling fuel.............................................. 59First-time operation .............................. 53Flushing cooling water passage ........... 73Flushing device............................... 33, 56Flushing with the flushing

attachment ......................................... 72Free accelerator.................................... 28Fuel consumption meter....................... 38Fuel economy ....................................... 38Fuel filter ............................................... 33Fuel filter, checking............................... 55Fuel flow meter ..................................... 37Fuel gauge ............................................ 36Fuel leaks, checking for ........................ 54Fuel level............................................... 54Fuel level-alert indicator ....................... 37Fuel management meter....................... 37Fuel requirements ................................. 19Fuel system........................................... 54



INDEX

104

Fuse, replacing ..................................... 97

GGasoline............................................ 2, 19Gasoline Additives................................ 20Gasoline exposure and spills.................. 2Gear oil, changing................................. 87Greasing ............................................... 79

HHot parts................................................. 1Hour meter............................................ 34

IIdentification numbers record............... 10Idle speed, inspecting .......................... 81Impact damage..................................... 96Installation requirements ...................... 16

KKey number .......................................... 10

LLaws and regulations.............................. 4Low battery voltage-alert indicator....... 37Low oil pressure alert ........................... 48Low oil pressure-alert indicator ............ 34Lubrication............................................ 73

MMain switch .......................................... 30Maintenance chart 1............................. 76Maintenance chart 2............................. 78Maintenance interval guidelines ........... 75Modifications .......................................... 2Mounting height.................................... 51Mounting outboard motor .................... 16Mounting the outboard motor .............. 51Muddy or acidic water.......................... 21

NNeutral interlock trigger ........................ 28Neutral throttle lever ............................. 28

OOperating engine .................................. 59Operating in salt water or other

conditions........................................... 70Outboard motor disposal

requirements ...................................... 22Outboard motor (painted surface),

checking ............................................. 74Outboard motor safety ........................... 1Outboard motor serial number ............. 10Overheat alert ....................................... 47Overheat-alert indicator........................ 35Overloading ............................................ 2

PPassenger training .................................. 4Passengers ............................................. 2People in the water ................................. 2Periodic maintenance ........................... 75Personal flotation devices (PFDs) ........... 2Power trim and tilt .................................. 1Power trim and tilt switch (bottom

cowling) .............................................. 31Power trim and tilt switch (remote

control) ............................................... 30Power trim and tilt switches (twin

binnacle type) ..................................... 31Power trim and tilt system, checking ... 57Power trim and tilt will not operate....... 97Propeller ................................................. 1Propeller, checking............................... 85Propeller (counter rotation models) ...... 18Propeller, installing ............................... 86Propeller, removing............................... 86Propeller selection ................................ 17

RRead manuals and labels ..................... 12Remote control box .............................. 27Remote control lever ............................ 27Remote control requirements ............... 16Replacement parts ............................... 75Replacing the engine oil filter ............... 84Rotating parts ......................................... 1Rules when encountering vessels .......... 6



INDEX

105

SSending fuel.......................................... 59Shallow water ....................................... 69Shifting.................................................. 62Shifting (checks after engine warm

up) ...................................................... 62Spark plug, inspecting.......................... 80Specifications ....................................... 15Speedometer ........................................ 35Star labels............................................. 22Starting engine ..................................... 60Start-in-gear protection........................ 18Steering and sailing rules and sound

signals .................................................. 5Stop switches ....................................... 62Stopping boat....................................... 64Stopping engine ................................... 64Storing outboard motor ........................ 71Submerged outboard motor................. 99

TTachometer .......................................... 34Throttle friction adjuster........................ 29Tilt support lever................................... 32Tilting up and down .............................. 66Top cowling, installing .......................... 56Top cowling, removing ......................... 54Transporting and storing outboard

motor .................................................. 71Trim meter ............................................ 34Trim tab with anode.............................. 32Trimming outboard motor..................... 64Trip meter ............................................. 36Troubleshooting.................................... 93Twin-engine speed synchronizer.......... 39

VVoltmeter .............................................. 37

WWarming up engine .............................. 62Warning labels ...................................... 12Warranty information (use outside

the U.S.A. or Canada) ...................... 102

Warranty, limited................................. 100Water separator alert ............................ 49Water separator alert is activated

after leaving port ................................ 98Water separator-alert indicator............. 40Weather .................................................. 4Wiring and connectors, inspecting ....... 85

YYamaha Security System (Y-COP) ....... 26Yamalube.............................................. 85



EMU43024

For your best ownership experience, think Genuine Yamaha!

Genuine Yamaha Parts — Genuine Yamaha replacement parts are the exact same partsas the ones originally equipped on your vehicle, providing you with the performance and du-rability you have come to expect. Why settle for aftermarket parts that may not provide fullconfidence and satisfaction?

Genuine Yamaha Accessories — Yamaha only offers accessories that meet our high stan-dards for quality and performance. Buy with confidence, knowing your Genuine Yamaha Ac-cessories will fit right and perform right — right out of the box.

Yamalube — Take care of your Yamaha with legendary Yamalube oils, lubricants, and careproducts. They’re formulated and approved by the toughest judges we know: the Yamahaengineering teams that know your Yamaha from the inside out.

Genuine Yamaha Service Manuals — Get the same factory manual for your vehicle thatthe technicians at your authorized Yamaha dealer use. Service manuals are availablethrough your Yamaha dealer or you can order them directly through yamahapubs.com (USAonly).

Genuine Yamaha products are available only from your Yamaha dealer.

Find out more at www.yamaha–motor in your country of residence.



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