STIHL BG 75III

Instruction ManualOwner's Manual

AssemblingSafety PrecautionsOperating InstructionsMaintenance

Parts and Controls 2Definitions 3Safety Precautions 4Assembling the Blower 10Fuel Mix 11Fueling 11Starting 12Using the blower 14Cleaning the Air Filter 16Adjusting the Carburetor 16Motormanagement 16Spark Arresting Screen in Muffler 17Checking the Spark Plug 18Replacing the Starter Ropeand Rewind Spring 19

Operating Instructions 21Maintenance Chart 22Specifications 23Special Accessories 23Storing the Machine 23STIHL Incorporated Federal and California Emission Control Warranty Statement 24

This Manual contains operating andsafety instructions for all STIHL BG 75blowers.Pay special attention to the safetyprecautions outlined on pages 4 to 9.Allow only persons who understand thisManual to operate your blower.To receive maximum performance andsatisfaction from your STIHL blower, it isimportant that you read and understandthe maintenance and safety precautionsbefore using your blower.Contact your STIHL dealer or the STIHLdistributor for your area if you do not understand any of the instructions in thisManual.

���������Because a blower is a high-speed tool,some special safety precautions mustbe observed as with any other powertool to reduce the risk of personal injury.Careless or improper use may cause serious or even fatal injury. STIHL’s philosophy is to continually improve all of its products. As a result,engineering changes and improvementsare made from time-to-time. If the operating characteristics or the appearance of your blower differ fromthose described in this Manual, please contact your STIHL dealer for information and assistance.

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0458 326 3021. M10. E9. T. Printed in Germany

1999 Andreas Stihl AG & Co., Waiblingen

Printed on chlorine-free paper

Printing inks contain vegetable oils,paper is recyclable

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1 = Slide control2 = Handle3 = Throttle trigger4 = Intake screen5 = Clamp6 = Blower tube7 = Nozzle8 = Spark plug boot9 = Fuel pump

10 =Choke lever11 =Filter housing12 =Carburetor adjusting screws13 =Starter grip14 =Fuel filler cap15 =Fuel tank16 =Muffler

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��� ������������Start, run and stop switch.

��� ��������The handle of the blower held by the right hand.

�� ����������������Controls the speed of the engine.

�� �������� �����Reduces the risk of direct contact with the fan.

�� ��!"�Secures blower tube to machine.

#� ��$����%&��Directs airstream.

��� '((���Aims and widens the airstream

)�� �"������%������Connects the spark plug to the ignition wire.

*� +%����%!"�Provides additional fuel feed for a cold start.

�,� ����-�.����Eases engine starting by enrichingmixture.

��� +�������% ����Covers the air filter element.

��� ��&%�����/�0% ������ ��$ �For tuning carburetor

���� �����������"��The grip of the pull starter, which isthe device to start the engine.

��� +%���+�������"��For closing the fuel tank.

��� +%��������For fuel and oil mixture.

�#� 1%22����Attenuates exhaust noises and diverts exhaust gases away from operator.

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���������Careless or improper use of the machinemay cause serious injury. Have yourSTIHL Dealer show you how to operateyour blower. Observe all applicable local safety regulations, standards andordinances.

���������Minors should never be allowed to use ablower : Bystanders, especially children,and animals should not be allowed in thearea where a machine is in use.Never let the unit run unattended.Do not lend or rent your machine withoutthe owner‘s manual. Be sure that any-one using your unit understands the information contained in this manual.Most of these safety precautions andwarnings apply to the use of all STIHLblowers. Different models may have different parts and controls.

See the appropriate section of yourowner‘s manual for a description of thecontrols and function of the parts of yourmachine.

���� ������������������ 1. the operator2. the blower 3. the use of the blower .

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You must be in good physical conditionand mental health and not under the influence of any substance (drugs, alcohol, etc.) which might impair vision, dexterity or judgment. Do not operate ablower when you are fatigued .Be alert - if you get tired while operatingyour machine, take a break. Tirednessmay result in loss of control. Workingwith any blower can be strenuous. If youhave any condition that might be aggra-vated by strenuous work, check with yourdoctor before operating the machine.

���������Prolonged use of a blower, (or other machines) exposing the operator to vibrations may produce whitefinger disease (Raynaud‘s phenomenon)or carpal tunnel syndrome. These condi-tions reduce the hand‘s ability to feeland regulate temperature, producenumbness and burning sensations andmay cause nerve and circulation damage and tissue necrosis.

���������The STIHL blower is not equipped withan antivibration (AV) system. OtherSTIHL blower models are available withan AV system designed to reduce the transmission of engine vibrations to theoperator’s hands. An AV system is recommended for those operators whouse blowers on a regular or sustainedbasis.

Antivibration systems do not guaranteethat you will not sustain whitefinger disease or carpal tunnel syndrome. Therefore, continual and regular usersshould monitor closely the condition oftheir hands and fingers. If any of the above symptoms appear, seek medicaladvice immediately.

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Clothing must be sturdy and snug-fitting,but allow complete freedom of move-ment.

���������Avoid loose-fitting jackets, flared or cuffed pants, scarfs, unconfined longhair or anything that could be drawn intothe air intake.

Wear overalls or longpants to protect your legs.Do not wear shorts.

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Use of gloves when working with the blower isrecommended.

Good footing is most important. Wear sturdyshoes with nonslip soles.

���������To reduce the risk of injury associatedwith the inhalation of dust, use a face filter mask when using your blower in dusty conditions.

���������Proper eye protection is a must. Eventhough the discharge is directed awayfrom the operator, ricochets and bouncebacks can occur during blower operations.

Never operate a blowerunless wearing gogglesor properly fitted safetyglasses with adequatetop and side protection

which comply with ANSI Z 87.1 (or yourapplicable national standard).

���������Blower noise may damage your hearing.Wear sound barriers (ear plugs or earmufflers) to protect your hearing. Conti-nual and regular users should have theirhearing checked regulary.

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For illustrations and definitions of the blower parts see the chapter on "Partsand Controls"!

����������Never modify a blower in any way. Onlyattachments supplied by STIHL or expressly approved by STIHL for usewith the specific STIHL blower modelsare authorized. Although certain unauthorized attachment are useable forthe STIHL blower, their use may be extremely dangerous.

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���� ����Always turn off the engine before puttingdown blower. When transporting yourunit in a vehicle, properly secure it to prevent turnover, fuel spillage and damage to the machine.

+������This STIHL unit uses an oil-gasoline mixture for fuel (see the chapter on"Fuel" of your owner‘s manual).

���������Gasoline is an extremelyflammable fuel. If spilledor ignited by a spark or other ignition source, itcan cause fire and

serious burn injury or property damage.

Use extreme caution when handlinggasoline or fuel mix. Do not smoke or bring any fire or flamenear the fuel.

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Fuel your machine in well-ventilated areas, outdoors only. Always shut off theengine and allow it to cool before refuel-ing. Relieve fuel tank pressure by loosen-ing fuel cap slowly. Never remove fuel filler cap while engine is running.

Select bare ground for fueling and moveat least 10 feet (3 m) from the fuelingspot before starting the engine.Wipe off any spilled fuel before startingyour blower and check for leakage.

Always tighten fuel filler cap securely after fueling.

���������Check for fuel leakage while refuelingand during operation. If fuel or oil leakage is found, do not start or run theengine until leak is fixed and spilled fuelhas been wiped away. Take care not toget fuel on your clothing. If this happens,change your clothing immediately.

Always store gasoline in approved container.

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���������Unit vibrations can cause an improperlytightened fuel cap to loosen or come offand spill quantities of fuel.

In order to reduce risk offuel spillage and fire,tighten fuel cap by handwith as much force aspossible.

��������You should always inspect your unit before starting it. Make sure the controlsand safety devices are working properly.

���������Your blower is a one-person machine. To reduce the risk of eye or other injuryfrom thrown objects, insure that by-standers are at least 50 feet (15m) away during use. Stop the engine immediately if you areapproached.

For specific starting instructions, see theappropriate section of your owner‘s manual. Place the machine on firm ground or other solid surface in an openarea. Maintain good balance and securefooting.

���������When you pull the starter grip, don‘twrap the starter rope around your hand.Do not allow the grip to snap back, butguide the starter rope slowly back to permit the rope to rewind properly.

Failure to follow this procedure may result in injury to hand or fingers andmay damage the starter mechanism.

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���������Never operate your machine if it is damaged, improperly adjusted or notcompletely and securely assembled.

���������Start and operate your unit outdoors in aventilated area.

Keep the space behind and beside theengine clear at all times to allow for theescape of hot and toxic exhaust fumes.When working with a handheld blower, always carry it with the muffler awayfrom you to reduce the risk of burns fromcontact with the hot muffler or hot exhaust fumes.

Operate your machine under good visibility and daylight conditions only.Work carefully.

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Operate the blower under good visibilityand daylight conditions only.

���������Your blower produces poisonous exhaust fumesas soon as the combus-tible engine is running.These gases (e.g. carbonmonoxide) may be color-

less and odorless.

To reduce the risk of serious or fatal injury from breathing toxic fumes, neverrun the blower indoors or in poorly ventilated locations. Ensure proper ventilation when working in trenches orother confined areas.

���������Use of this product can generate dust,mists, and fumes containing chemicalsknown to cause respiratory disease, cancer, birth defects, or other reproduc-tive harm. If you are unfamiliar with therisks associated with the particular dust,mists or fumes at issue, consult your employer, governmental agencies suchas OSHA and NIOSH and other sourceson hazardous materials. If the substancebeing blown or vacuumed is a commer-cial substance, review the material safety data sheet for that substance and/ or consult the material manufacturer /supplier. The state of California andsome other authorities, for instance,

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have published lists of substancesknown to cause cancer, reproductive toxicity, etc.

Control dust, mist and fumes at the source where possible. In this regarduse good work practices and follow therecommendations of OSHA / NIOSHand occupational and trade associa-tions. When the inhalation of toxic dust,mists and fumes cannot be eliminated,the operator and any bystanders shouldalways wear a respirator approved byNIOSH / MSHA for the substance at issue.

���������Dust with silica in its composition maycontain crystalline silica. Silica is a basiccomponent of sand, quartz, brick, clay,granite and numerous other mineralsand rocks, including masonry and con-crete products. Repeated and / or sub-stantial inhalation of airborne crystallinesilica can cause serious or fatal respira-tory disease, including silicosis. In addi-tion, the state of California and some other authorities have listed respirablecrystalline silica as a substance knownto cause cancer. When encounteringsuch materials, always follow the re-spiratory precautions mentioned above.

���������Breathing asbestos dust is dangerousand can cause severe or fatal injury, re-spiratory illness or cancer. The use anddisposal of asbestos containing productshave been strictly regulated by OSHAand the Environmental Protection Agency. Do not blow or disturb asbestosor asbestos containing products, suchas asbestos insulation. If you have anyreason to believe that you might be disturbing asbestos, immediately contactyour employer or a local OSHA representative.

When working with the blower, alwayswrap your fingers tightly around thehandle, keeping the control handle cradled between your thumb and forefinger. Keep your hand in this position to have your machine undercontrol at all times. Make sure your control handle (and grip for vacuum attachment) are in good condition andfree of moisture, pitch, oil or grease.

���������To reduce the risk of personal injury, donot direct air blast towards bystanders,since the high pressure of the air flowcould injure eyes and could blow smallobjects at great speed.

���������Always shut off the engine before cleaning or servicing the unit or replacing parts.

The blower fan between the air intakeand output openings rotates wheneverthe engine is running. In order to reducethe risk of injury from contact with thefan, never operate your unit without aproperly mounted intake screen and blower tube. Never insert any foreign object into the air intake or output openings of the machine.

Pay attention to the direction of the wind,i.e., do not work against the wind.

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To reduce the risk of stumbling and lossof control,do not walk backward whileoperating the machine.

* ������1������%�������(special accessory)

For specific assembling instructions, seethe appropriate section of your owner’smanual.

When working with the vacuum attach-ment (special accessory), always holdthe unit firmly with both hands.

Wear it with the carrying harness overthe shoulder (see illustration).

���������To reduce the risk of perso-nal injury from fire and ex-plosion, never attempt topick up hot or burning sub-stances (e.g. smolderingashes, glowing cigarettes)or combustible fluids (e.g.gasoline, paint thinners).

���������In order to reduce the risk of injury fromcontact with rotating parts and damageto the motor, the intake screen must always be screwed in place when thesuction tube is not mounted.

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Use only identical STIHL replacementparts for maintenance and repair. Use of parts manufactured by othersmay cause serious or fatal injury.

Follow the maintenance and repair instructions in the appropriate section ofyour owner’s manual. Refer to the maintenance chart at the last pages ofthis manual.

���������Always stop the engine and make surethat the fan is stopped before doing anymaintenance or repair work or cleaningthe blower. Do not attempt any mainten-ance or repair work not described inyour owner’s manual. Have such workperformed at your STIHL service shop only.

Check fuel filler cap for leaks at regularintervals. Use the specified spark plugand make sure it and the ignition leadare always in good condition.

2����������������������������������� ���������������� ���� � �� ����������������������������������������� ����� ������������������!���������������������������������������������� ������� ��������������������������������������������������������� ����� ��� ��!)�����������������

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���������A worn or damaged muffler is a fire hazard and may cause loss of hearing.Check to see that the muffler is in goodcondition. The blower must not be opera-ted if the muffler is not functioning pro-perly or has been removed.

Remember that the risk of forest fires isgreater in hot weather. Use the spark arresting muffler supplied with the unit.Never touch a hot muffler or burn will result.

���������In order to reduce the risk of fire, do notmodify or remove any part of the muffleror spark arrestor.

Keep spark plug and wire connectiontight and clean. The spark plug electrodegap should be checked with a feeler gauge at least every 50 operating hoursand reset if necessary. Fit a new sparkplug if the electrodes are badly pitted.

Store blower in a dry, high or locked location place and out of reach of children.

Before storing for longer than a few days, always empty the fuel tank.

For any maintenance please refer to themaintenance chart ����������������� ������ near the end of this manual.

7

The BG 75 comes standard as a blower.A vacuum attachment* is available foruser installation which can be used topick up leaves, grass and similar materials.

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• Line up the dots on the tube andhousing and then push the blowertube �� onto the housing stub �.

• Tighten down the clamp ��.

* Special accessory

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Before using the vacuum attachment forthe first time:

• Fit the elbow inside the catcher bag.

It is necessary to remove the blowertube and fit the elbow with catcher bagin its place.

• Release the clamp.

• Pull the blower tube off the fan hou-sing stub.

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• Remove the screws �� from thestarter cover.

• Mount the handle �� - insert thescrews (M5x25) in the starter coverand one screw �� (P6x19) at theunderside of the unit and tightendown.

• Remove screw �� from intakescreen � - fold the screen down.

• Push suction tube �! over intake ��" on fan housing.

• Fit the hose clamp ��� and tightenit down.

• Fit elbow of catcher bag �� on thefan housing stub �.

• Attach the carrying strap ���.

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This engine is certified to operate onunleaded gasoline and with themix ratio 50:1.

Your two-stroke engine requires a mixture of brand-name gasoline and quality two-stroke engine oil with theclassification TC.

Use regular branded unleaded gasolinewith a minimum octane rating of 90 RON (U.S.A./Canada: pump octanemin. 89!). If the octane number of the regular grade gasoline in your area is lower use premium unleaded fuel. Fuel with a lower octane rating may result in preignition (causing "pinging")which is accompanied by an increase inengine temperature. This, in turn, increases the risk of the piston seizureand damage to the engine.

The chemical composition of the fuel isalso important. Some fuel additives notonly detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines etc.), but magnesium castings aswell. This could cause running problemsor even damage the engine. For this reason it is essential that you use onlyname branded fuels!

Use only STIHL two-stroke engine oil orequivalent branded two-stroke air-cooled engine oils with the classificationTC for mixing.

We recommend STIHL 50:1 two-strokeengine oil since it is specially formulatedfor use in STIHL engines.

Do not use BIA or TCW (two-stroke water cooled) mix oils!

Take care when handling gasoline. Avoid direct contact with the skin andavoid inhaling fuel vapour.

The canister should be kept tightly closed in order to avoid any moisture getting into the mixture.

The fuel tank and the canister in whichfuel mix is stored should be cleanedfrom time to time.

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Only mix sufficient fuel for a few dayswork, not to exceed 3 months of storage.Store in approved safety fuel-canistersonly. When mixing, pour oil into the canister first, and then add gasoline.

Gaso- Oil (STIHL 50:1 orline equivalent branded TC oils)

US gal. US fl.oz

1 2.6 2 1/2 6.4 5 12.8

Dispose empty mixing-oil canisters onlyat authorized disposal locations.

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Before fueling, clean the filler capand the area around it to ensure that nodirt falls into the tank.

Always thoroughly shake the mixture inthe canister before fueling your machine.

�*������+In order to reduce the risk of burns or other personal injury from escaping gasvapor and fumes, remove the fuel fillercap carefully so as to allow any pressurebuild-up in the tank to release slowly.

�*������+After fueling, tighten fuel cap as securely as possible by hand.

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• Observe safety precautions - seechapter "Safety Precautions" in thismanual.

To start the engine, move theslide control �� to �position.Squeeze the throttle trigger � and move the slide control to �at the same time.

• Let go of throttle trigger.• Release the slide control =

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Set the choke lever ��:for cold start to �for warm start to �(even if engine has been running but is still cold)

Press the fuel pump bulb ��at least five times.

Change the fuel pick up body every year.

Before storing your machine for a longperiod, drain and clean the fuel tank andrun engine until carburetor is dry.

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• Put the unit on the ground.

• Make sure you have a firm footing:Hold the unit with your left hand andpress it firmly against the ground.

• Pull the starter grip slowly with yourright hand until you feel it engage -and then give it a brisk strong pull.Do not pull out starter rope morethan 30" (75 cm) - it might break.Do not let the starter grip snap back.

• Guide it back slowly so that starterrope can rewind properly.

When engine begins to fire:

• Move choke lever to �and continue cranking.#���������������������.�blip thethrottle trigger, the slidecontrol then moves to the"Run" position �and the returns to idling speed.

• To shut down the engine: Move the slide control to /"/.

#�����0����������1����� ��������)#��������������������� .

• As soon as engine runs:• Blip the throttle trigger =

slide control moves to the"Run" position �engine returns to idling speed.

• Open throttle slightly - warm up engine for short period.

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If you did not move the chokelever to �quickly enough after the enginebegan to fire, the combustionchamber has�flooded.

Remove spark plug terminal ��.

• Unscrew and dry off the spark plug.

• Set slide control to "0".• Engage the throttle fully.

• Pull the starter rope several times to clear the combustionchamber.

• Refit the spark plug and connectthe spark plug terminal.

• Set slide control to � • Set choke lever to �

even if engine is cold.• Now start the engine.

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Press fuel pump bulb �� at least 5 times.

• Now start the engine.

The blower is designed for single-handed operation. The operator can gripthe handle on the housing in his right orleft hand.

A large area can be covered with the wide nozzle.

The wide nozzle generates a flat air-stream which can be used highly specifi-cally and effectively since the outlet isnear ground level.

The blower’s wide nozzle is particularlyeffective for clearing large areas coveredwith sawdust, fallen leaves or cut grass etc.

5��������������������0��$������6���1�������� �����0�$��������1��6��4������0������������ (risk of injurydue to the circulating fan wheel).

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���*������+Be wary of small animals when blow-sweeping or vaccuming leaves. To avoidpossible injuries in such situations, donot run the unit at high revs.

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When using the blower as a vacuum cleaner (vacuum attachment as specialaccessory), the carrying strap on the catcher bag is placed over the left shoulder and the right arm is guided bythe carrying strap. The left hand gripsthe handle on the housing, the righthand gripping the carrying handle.

Large leaves, cardboard or pieces ofbark can be taken up by the suction tube with its large diameter.

Never take up wet leaves as they mayclog the fan!

To minimize blowing time, use rakesand brooms to loosen debris before blowing.Recommended working techniques tominimize airborne debris and pollution:

• In dusty conditions, slightly dampensurfaces.

• Use the full blower nozzle extension so the air stream canwork close to the ground.

• Do not direct debris at subjectssuch as open windows or freshly-washed cars.

• After using blowers, clean up. Donot blow debris onto neighbouringproperties.

Recommended working techniques tominimize noise:

• Operate power equipment only atreasonable hours - not early in themorning, late at night or during thenoon-break when people might bedisturbed. Comply with times listedin local ordinances. Usual recom-mendations are 9:00 a.m. to 12:00a.m. and 03:00 p.m. to 5:00 p.m. onworkdays for professionals. Specialconsiderations should be given toneighbours on weekends.

• Fewer engines mean less noise;therefore use only one piece of

power equipment at a time, whenpossible.

• Operate power blowers at the lowest possible throttle speed to dothe job.

• Check your equipment before operation, especially the muffler, airintakes and air filters.

Conserve water by using power blowersinstead of hoses for those lawn and garden applications where a blower canbe properly used, such as cleaning patios or porches.

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Dirty air filters reduce engine power, increase fuel consumption and makestarting more difficult.

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• Move choke lever to � Press in the tab ��. Ease the filter cover �over the tab and lift it off.

• Clean away loose dirt from aroundthe filter.

• Remove the foam �� and felt �� filter elements.

• Wash the foam element in a clean, non-flammable cleaning solution(e.g. warm soapy water) and thendry.

• Fit a new felt filter element. As atemporary measure you can knockit out on the palm of your hand orblow it out with compressed air. Don’t wash.

Always replace damaged filter elements.

• Install the foam element �� in the filter cover��,

• Place felt element �� (lettering facing inward) in filter housing ��.

• Fit the felt cover � so that it snapsinto position.

The carburetor comes with a standardsetting.This is the optimum setting to ensureyour machine will operate reliably with the lowest possible emissions under most operating conditions.

-���1��1��������If it is necessary to readjust the car-buretor from scratch, first carry out thestandard setting.

Turn8 high speed adjusting screw and9 low speed adjusting screw counter-

clockwise (richer) as far as stop.• Check air filter and clean it if neces-

sary.

• Warm up the engine.• Set idle speed correctly.

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Exhaust emissions are controlled by thedesign of the fundamental engine parameters and components (e.g. carburetion, ignition, timing and valve or port timing) without the additionof any major hardware.

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<��������� ���������1����Carry out the standard setting.

Turn the idle speed adjusting screw �9#clockwise until the engine runs smoothly.

Your carburetor does not have a highspeed adjusting screw (H screw). Adjust-ment of maximum engine speed is notnecessary.

The carburetor is set at the factory toguarantee an optimum fuel-air mixtureunder all operating conditions.

Idling and part-load emissions are mini-mized by limiting the idle mixture.

• Check the air filter and clean it if necessary.

• Warm up the engine.

• Carefully screw the low speed screw �9 down onto its seat. Thenopen it one turn counterclockwise(standard setting, 9�=��)

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<��������� ���������1����)Check standard setting.(L screw must be one turn open)

Turn the idle speed screw �9# clock-wise until the engine runs smoothly.

If the engine is down on power, checkthe spark arresting screen in the muffler.

• Remove the housingTake out the screw���.Take out the spark arrestingscreen �.

• Clean the spark arresting screen.

• If screen is damaged or heavily carbonized, fit a new one.

• Install the spark arresting screen.• Mount the housing.

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Wrong fuel mix (too much engine oil inthe gasoline), a dirty air filter andunfavorable running conditions (mostlyat part throttle etc.) affect the condition ofthe spark plug. These factors cause deposits to form on the insulator nosewhich may result in trouble in operation.

If engine is down on power, difficult tostart or runs poorly at idling speed,first check the spark plug.

• Remove spark plug -see chapter “Starting”:

• Clean dirty spark plug.• Check electrode gap -

it should be 0.5mm/0.02" �# -readjust if necessary.

• Use only resistor type spark plugsof the approved range.

Rectify problems which have caused fouling of spark plug:Incorrect carburetor setting, too much oilin fuel mix, dirty air filter, unfavorable running conditions, e.g.operating at part load.

• Fit a new spark plug after approx. 100 operating hours -or earlier if the electrodes arebadly eroded.

�*������+To reduce the risk of fire and burn injury,use only spark plugs authorized bySTIHL (see “Specifications”). Alwayspress spark plug boot � snugly ontospark plug terminal �� of the propersize. (Note: If terminal has detachableSAE adapter nut, it must be attached.) A loose connection between spark plugterminal and ignition wire connector inthe boot may create arcing that could ignite combustible fumes and cause afire.

000B

A03

6 T

R

1

000B

A03

9 K

N

A

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• Slacken off the housing screws.Remove the three screws ��.Lift the starter cover � offthe engine ��(if vac attachment is fitted, removehandle before starter cover)

Take out the screw ��.• Remove the rope rotor very

carefully - the rewind spring is seated in the rope rotor and may pop out, uncoil andcause injury if care is not taken.Release spring tension by pullingstarter handle out serval inches. Hold pulley to prevent rebound. Pull rope. Slowly release springtension by allowing pulley to unwind until all tension is gone.

• Use a screwdriver to ease the capout of the starter grip.

• Remove remaining rope from the rotor and grip, making sure the ElastoStart sleeve is not pushedout of the grip.

• Tie a simple overhand knot in theend of the new starter rope andthen thread rope through the top ofthe grip and the rope bush ��.

• Refit the cap in the grip.

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R

1

2

3

326B

A02

9 K

N

326B

A02

6 K

N

4

326B

A02

7 K

N

5

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• Pull the rope through the rotor andsecure it with a simple overhandknot.

• Lubricate rope rotor bore with non-resinous oil.

• Push rotor onto the starter post -turn back and forth until loop��� ofrewind spring engages.

• Insert screw and tighten down securely.

5���������������1�� ����• Make a loop in the starter rope

and use it to turn the rope rotorsix full revolutions counter-clockwise.Hold the rotor steady -straighten the twisted rope - release the rotor -let go of rope slowly so that it winds onto the rotor.

The starter grip must be firmlyseated in the rope guide bush.If grip droops to one side: Add one more turn on rope rotorto increase spring tension.

326B

A02

8 K

N

355B

A02

0

355B

A02

1 K

N

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When starter rope is fully extended,it must be possible to rotate the rotor

another one half turn.If this is not the case, the spring is overtensioned andcould break.Take one turn of rope off therotor.

• Secure the starter cover.• Tighten down the housing screws

firmly.

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• Lubricate the new spring with afew drops of non-resinous oil -do not open the wire retainer.

• Remove the rope rotor.

• Remove parts of old spring.

• Fit the new spring - position outer spring loop in therecess - the wire retainer slips off in this process.

If the spring pops out and uncoils:Refit it in the counterclockwise direction -start outside and workinward.

• Install the rope rotor.• Tension the rewind spring.

• Fit the starter cover.• Tighten down the housing screws

firmly.

355B

A02

2 K

N

a = 2mm(0.08in)

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A factory new machine should not berun at high revs (full throttle off load) forthe first three tank fillings. This avoids unnecessary high loads during the break-in period.

As all moving parts have to bed induring the break-in period, the frictional resistances in the engine are greater during this period.The engine develops its maximum power after about 5 to 15 tank fillings.

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After a long period of full-throttle operation, allow engine to run for a whileat idle speed so that the heat in the engine can be dissipated by flow of cooling air. This protects engine-mounted components (ignition, carburetor) from thermal overload.

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Storing for a short period:Wait for engine to cool down. To avoidcondensation, fill the fuell tank and keep the unit in a dry place until youneed it again.

Storing for an long period:see chapter "Storing the Machine".

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Please note that the following maintenance intervals apply for normal operatingconditions only. If your daily working time is longer than normal or operatingconditions are difficult (very dusty work area) shorten the specified intervalsaccordingly.

befo

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ork

afte

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:

Complete machineVisual inspection (condition, leaks) x x

Clean x

Control handle Check operation x x 11

Air filterClean x 15

Replace x 15

Filter in fuel tankCheck x 11

Replace felt and strainer x 11

Fuel tank Clean x 11

CarburetorCheck idle adjustment x x 15-16

Idle setting x 15-16

Spark plug Readjust electrode gap x 17

Cylinder fins Clean x

Spark arresting screen in mufflerInspect x 16

Clean or replace x 16All accessible screws and nuts(not adjusting screws) Retighten x

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The user of this unit should carry outonly the maintenance operations described in this manual. Other repairwork may be performed only by an authorized STIHL Service dealer.

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Original STIHL parts can be identified by the STlHL part number, the� logo and the STIHL partssymbol � The symbol may appear alone on small parts.

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Single cylinder two-stroke engine

Displacement: 1.55 cu.in (25.4 cm3)

Bore: (1.34 in) 34 mmStroke: (1.10 in) 28 mm

Engine power: 0.75 kW (1.00 HP)

Max. permissibleengine speed: See "Adjusting the

Carburetor"

Idle speed: 2,800 r.p.m.

Bystanders noise perANSI B 175.2-1990 69 dB (A)

Air flow rate 640 m3/h (377 cfm)Air velocity 60 m/s (198 ft/s)

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Type: Electronic(breakerless)magneto ignition

park plug Bosch WSR 6 F(suppressed): or

NGK BPMR 7 A;Electrode gap: 0.02 in (0.5 mm)Spark plug thread: M 14 x 1.25;

0.37 in (9.5 mm)long

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Carburetor: All position diaphragm carburetor with integral fuel pump

Air filter: Foam and felt elements

Fuel tank capacity: 0.9 US pt (0.5 L)Fuel mixture: See chapter

"Fuel Mix"Weight: (complete unit

w/out tools) 9.4 lb (4.3 kg)

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Vacuum attachment kit:4227 007 1000

Gutter cleaning kit:4227 007 1005

For periods of about 3 months or longer:

• Remove the blower tube and nozzle.

• Drain and clean the fuel tank.

• Run engine until carburetor is dry -this helps prevent the carburetor diaphragms sticking together.

• Thoroughly clean the machine -pay special attention to the cylinder fins and air filter.

• Store the machine in a dry, high or locked location - out of thereach of children and other unauthorized persons.

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The U.S. Environmental ProtectionAgency (EPA), the California Air Resources Board (CARB) and STIHL Incorporated are pleased to explain theEmission Control System Warranty onyour model year 2000 and later equip-ment type engine. In California, newsmall off-road engines must be designed,built and equipped to meet the State’sstringent anti-smog standards. In otherstates, new 1997 and later model yearsmall off-road equipment engines mustbe designed, built and equipped, at thetime of sale, to meet the U.S. EPA regulations for small non road engines.The equipment engine must be free fromdefects in materials and workmanshipwhich cause it to fail to conform withU.S. EPA standards for the first two years of engine use from the date ofsale to the ultimate purchaser.

STIHL Incorporated must warrant theemission control system on your smalloff-road engine for the period of time listed below provided there has been noabuse, neglect or improper maintenanceof your small off-road equipment engine.

Your emission control system includesparts such as the carburetor and the ignition system. Also included may behoses, and connectors and other emission related assemblies.

Where a warrantable condition exists,STIHL Incorporated will repair your smalloff-road equipment engine at no cost toyou, including diagnosis (if the diagnosticwork is performed at an authorizeddealer), parts, and labor.

'�����������3��*������0�:�������)The small off-road equipment enginesare warranted for two years in California.In other states, 1997 and later modelyear small off-road equipment enginesare also warranted for two years. If anyemission-related part on your engine isdefective, the part will be repaired or replaced by STIHL Incorporated free ofcharge.

@����3��*������0�>�� ����$�������)As the small off-road equipment engineowner, you are responsible for the per-formance of the required maintenance listed in your owner’s manual. STIHL Incorporated recommends that you retain all receipts covering maintenanceon your small off-road equipment engine,but STIHL Incorporated cannot denywarranty solely for the lack of receipts orfor your failure to ensure the perform-ance of all scheduled maintenance.

Any replacement part or service that isequivalent in performance and durabilitymay be used in non-warranty mainten-ance or repairs, and shall not reduce thewarranty obligations of the engine manufacturer.

As the small off-road equipment engineowner, you should be aware, however,that STIHL Incorporated may deny youwarranty coverage if your small off-roadequipment engine or a part has faileddue to abuse, neglect, improper mainten-ance or unapproved modifications.

You are responsible for presenting yoursmall off-road equipment engine to aSTIHL service center as soon as a problem exists. The warranty repairs willbe completed in a reasonable amount oftime, not to exceed 30 days.If you have any questions regardingyour warranty rights and responsibilities,please contact a STIHL customer service representative at 1-800-467-8445 or you can write to STIHL Inc.,536 Viking Drive, P.O. Box 2015,Virginia Beach, VA 23450-2015.

:��������$0�-5289�2���� �����1STIHL Incorporated warrants to the ultimate purchaser and each subsequentpurchaser that your small off-road equipment engine will be designed, built and equipped, at the time of sale, to meet all applicable regulations. STIHLIncorporated also warrants to the initialpurchaser and each subsequent purchaser that your engine is free fromdefects in materials and workmanshipwhich cause the engine to fail to conform with applicable regulations for aperiod of two years.

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*������0������1The warranty periods will begin on thedate the utility equipment engine is purchased by the initial purchaser andyou have signed and sent back the warranty card to STIHL. If any emissionrelated part on your engine is defective,the part will be replaced by STIHL Incorporated at no cost to the owner.Any warranted part which is not scheduled for replacement as requiredmaintenance, or which is scheduled onlyfor regular inspection to the effect of "repair or replace as necessary" will bewarranted for the warranty period. Any warranted part which is scheduledfor replacement as required mainten-ance will be warranted for the period oftime up to the first scheduled replace-ment point for that part.

?��������You, as the owner, shall not be chargedfor diagnostic labor which leads to thedetermination that a warranted part is defective. However, if you claim warrantyfor a component and the machine is tested as non-defective, STIHL Incorporated will charge you for the costof the emission test.Mechanical diagnostic work will be performed at an authorized STIHL servicing dealer. Emission test may beperformed either at STIHL Incorporatedor at any independent test laboratory.

*������0�*��4STIHL Incorporated shall remedy war-ranty defects at any authorizedSTIHL servicing dealer or warranty station. Any such work shall be free ofcharge to the owner if it is determinedthat a warranted part is defective. Anymanufacturer-approved or equivalentreplacement part may be used for anywarranty mainten-ance or repairs onemission-related parts and must be provided without charge to the owner.STIHL Incorporated is liable for damagesto other engine components caused bythe failure of a warranted part still underwarranty.

The California Air Resources Board’sEmission Warranty Parts List specificallydefines the emission-related warrantedparts. These warranted parts are:

CarburetorChoke (Cold start enrichment system)Intake manifoldAir filter Spark plugMagneto or electronic ignition system(ignition module)Catalytic converter (if applicable)Fasteners

*����������4��������������*������0-�������Bring the product to any authorizedSTIHL servicing dealer and present thesigned warranty card.

'�����������>�C���������The maintenance instructions in this manual are based on the application ofthe recommended 2-stroke fuel-oil mixture (see also instruction "Fuel"). Deviations from this recommendation regarding quality and mixing ratio of fueland oil may require shorter maintenanceintervals.

9����������This Emission Control Systems Warranty shall not cover any of the following:

- repair or replacement required because of misuse, neglect or lack ofrequired maintenance,

- repairs improperly performed or replacements not conforming toSTIHL Incorporated specifications thatadversely affect performance and/ordurability, and alterations or modifications not recommended or approved in writing by STIHL Incorporated,

and

- replacement of parts and other services and adjustments necessaryfor required maintenance at and afterthe first scheduled replacement point.

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& WARNING!The engine exhaust from this productcontains chemicals known to the State

of California to cause cancer, birthdefects or other reproductive harm.

englisch/english U.S.A.lCARB/EPA