PARTSMANUALPTX301DPUMP

Model

PUB-PP6438ARev. 06/08

© Copyright 2008 Robin America, Inc.940 Lively Blvd. • Wood Dale, IL 60191 • Phone: 630-350-8200 • Fax: 630-350-8212e-mail: sales@robinamerica.com • www.robinamerica.com

PTX301D - 3 - 06-08

HOW TO USE THIS MANUAL

Robin engines are identifi ed by MODEL, SPECIFICATION, and CODE NUMBER. For each model there may be many different versions called specifi cations. Each specifi cation will be unique in some way. The difference may only be the paint color or it may have a different type of PTO or some other signifi cant difference.In order the identify the correct service part number, it is important to confi rm the specifi ca-tion and code numbers for your engine. The specifi cation and code number together are know as the PRODUCT NUMBER.All Robin 4 cycle engines have a Product Number label similar to the label illustrated below.

The Product Number Label has a 15 digit alphanumeric string that consists of the SPECIFICATION (SPEC) number (11 digits) and the CODE number (4 digits). Please note the illustration below:

X X X X

SPEC NO. (11 digits) CODE NO. (4 digits)

PRODUCT NO. (15 digits)

P T X 301

PTX301D - 4 - 06-08

MANUAL LAYOUT

1. SECTION NAME Parts are broadly classifi ed according to their functions. Refer to the Group Index (table of contents) for respective section name.

2. FIG. No. The FIG. number indexes the reference and part numbers to the illustration. Figure numbers that vary only in the tens place (i.e..: 700 and 710) are in a group of the same section (i.e..:Electrical Device Group). 3. REF. No . The Reference number identifi es the part illustration with the corresponding part number in the part list. 4. SUBASSEMBLY SUBASSEMBLY parts of part assembly are listed below the assembly part. The subassembly part reference number is indicated by the number led by "-" such as "-1", "-2". 5. PART NUMBER It is the number assigned for sales unit. Use the PART No. when making an order.

6. DESCRIPTION It is designation of the part.

7. QTY. Quantity of each part used for each product.

8. REMARKS This gives a distinctive feature and/or a supplementary comment for the type, the specifi cation, and the part concerned. It also shows part number(s) interchangeable for the part.

9. FROM-TO This section shows the CODE No. to indicate the history of progress in which improved parts have been introduced in the product. The FROM-TO CODE No. helps to identify PART No. being employed in the product concerned. See the examples below:

- The part is used in the product irrespective of CODE No. 2101- The part is used in the products with CODE No. of 2101 and after this number. - 2100 The part is used in the products with CODE No. of 2100 and before this number.

1

2 3

4

1 6 7 9 2

8

3

5

4

PTX301D - 5 - 06-08

GROUP INDEXGroup Name Page

PUMP ......................................................................................................... 6

CRANKCASE GROUP ............................................................................... 8

CRANKSHAFT GROUP ........................................................................... 10

INTAKE and EXHAUST GROUP .............................................................. 12

GOVERNOR GROUP .............................................................................. 16

COOLING and STARTING GROUP ......................................................... 18

FUEL, LUBRICANT GROUP .................................................................... 20

CARBURETOR GROUP .......................................................................... 22

ELECTRIC DEVICE GROUP .................................................................. 24

ACCESSOSRY GROUP........................................................................... 26

SYMBOL DESCRIPTIONAY ...........................ASSEMBLYCP ...........................COMPLETEEX ...........................EXPORT (from Japan)FIG. .........................FIGUREFR. ..........................FRONT" .............................. INCHINCL. ...................... INCLUDE~L ............................LITERL= ...........................LENGTH (in. mm)L.H. (LH) .................LEFT-HAND SIDEMECH .....................MECHANICALNO (NON) ...............NONEOPT.........................OPTIONALO.S. ........................OVER SIZE

SYMBOL DESCRIPTIONP= ...........................PITCH (in mm)P.T.O. (PTO) ...........POWER TAKE OFFREF. ........................REFERENCER.H. (RH) ................RIGHT HAND SIDERR. .........................REARSTD. .......................STANDARDSW ..........................SWITCHT= ...........................THICKNESS (in mm)UN ..........................UNITU.S..........................UNDER SIZE~V ...........................VOLTAGE~W ..........................WATTW/ ...........................WITHW/O ........................WITHOUT

INDEX OF DESCRIPTION SYMBOLS

PTX301D - 6 - 06-08

SECTION 1 PUMP GROUP

FIG. 100

PTX301D - 7 - 06-08

REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.

SECTION 1 PUMP GROUP

110 480-08310-17 Pump Body, lower 1 100180 480-05310-02 Hex Bolt 4 100210 480-08310-01 Pump Body, upper 1 100280 480-05310-03 Hex Bolt 3 100287 480-05310-29 Washer 3 100310 480-08310-23 Suction Flange 1 100314 480-05310-12 Hex Bolt 8 100320 480-08310-24 Valve 2 100330 480-08010-17 Packing, coupling 2 100340 480-08210-22 Hose Coupling 2 100341 481-00001-67 Nipple 2 100350 480-08210-23 Coupling, al 2 100360 480-08210-12 Plug 1 100362 480-08210-18 O ring 1 100370 480-08310-20 Suction Chamber 1 100374 480-08310-21 O ring 1 100410 480-08310-26 Delivery Flange 1 100510 480-08310-33 Strainer 1 100520 480-08010-28 Hose Band 3 100610 481-00001-84 Frame 1 100670 480-05310-05 Rubber Cushion 4 100671 480-05310-06 Rubber Cushion 2 100690 480-10010-24 Nut & Washer Ay 8 100710 480-08310-15 Diaphragm 1 100715 480-08310-16 Cap, diaphragm 1 100720 480-08310-14 Rod 1 100725 480-08010-14 Bolt and Washer Ay 4 100730 480-05310-08 Needle Bearing 1 100735 480-05310-07 Washer 2 100738 480-05310-10 Thrust Washer 1 100740 480-05310-11 Hex Bolt 1 100742 480-05310-36 Spring Washer 1 100743 480-05310-09 Grease Nipple 1 100750 480-05310-42 Gear Unit 1 100754 480-05310-36 Spring Washer 4 100755 480-05310-34 Cover 1 100757 480-05310-32 Wing Screw 3 100758 480-05310-33 Spring Washer 3 100760 480-05310-39 Packing 1 100763 480-05310-41 Screw 4 100765 480-05310-38 Washer 4 100770 480-05310-40 Key, crankshaft 1 100910 484-00072-03 Label, pump name 1 100 100

PTX301D - 8 - 06-08

FIG. 200

SECTION 2 CRANKCASE GROUP

PTX301D - 9 - 06-08

REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.

SECTION 2 CRANKCASE GROUP

10 277-10102-41 Crankcase Cp 1 w/ oil sensor 20020 237-14202-03 Valve Guide 1 20026 277-16010-01 Stem Seal 1 20030 044-02502-00 Oil Seal 1 20040 060-02800-21 Ball Bearing 1 20050 277-15011-03 Pipe Knock 2 20060 010-50802-50 Stud 2 20070 010-50603-51 Stud 2 20075 044-00600-20 Oil Seal 1 20080 040-11400-30 Plug 2 20090 021-11400-20 Gasket 2 200210 277-11002-21 Main Bearing Cover Cp 1 200220 044-02502-10 Oil Seal 1 200230 060-02501-40 Ball Bearing 1 200250 277-45004-J1 Governor Gear Cp 1 200260 277-41901-03 Governor Sleeve 1 200270 277-63601-23 Oil Gauge 2 200280 021-31600-20 Gasket 2 200300 001-04083-50 Flange Bolt 6 200610 277-13001-11 Cylinder Head Cp 1 200620 277-15001-23 Gasket, head 1 200630 011-00802-40 Flange Bolt 4 200631 011-00803-10 Flange Bolt 1 200680 277-15503-01 Rocker Cover Cp 1 200690 277-16001-13 Gasket, rocker cover 1 200700 277-15011-03 Pipe Knock 2 200710 011-00600-20 Flange Bolt 4 200960 277-99001-27 Gasket Set 1 200

PTX301D - 10 - 06-08

SECTION 3 CRANKSHAFT GROUP

FIG. 300

PTX301D - 11 - 06-08

REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.

SECTION 3 CRANKSHAFT GROUP

10 277-20901-51 Crankshaft Cp 1 30050 018-01400-20 Flange Nut 1 30070 032-30300-10 Woodruff Key 1 30080 206-26001-13 Key 1 300310 277-22501-10 Connecting Rod Ay 1 300311 277-22502-00 Connecting Rod Ay 1 0.25mm Undersized 300320 277-23001-03 Connecting Rod Bolt 2 300350 277-23301-13 Piston Pin 1 300360 277-23401-J3 Piston 1 Std 300361 277-23403-J3 Piston 1 0.25mm Oversized 300362 277-23404-J3 Piston 1 0.50mm Oversized 300370 277-23511-37 Piston Ring Set 1 Std 300371 277-23512-17 Piston Ring Set 1 0.25mm Oversized 300372 277-23513-17 Piston Ring Set 1 0.50mm Oversized 300380 056-51600-10 Clip 2 300

PTX301D - 12 - 06-08

SECTION 4 INTAKE and EXHAUST GROUP

FIG. 400

PTX301D - 13 - 06-08

REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.

SECTION 4 INTAKE and EXHAUST GROUP

10 277-31601-31 Camshaft Cp 1 40025 277-35101-03 Pin, camshaft 1 40027 024-00600-10 O ring 1 40034 277-38601-03 Pin, spring 1 40035 277-36401-03 Release Lever 1 40037 277-36501-03 Clip 1 40038 277-38702-03 Return Spring 1 40060 279-33601-03 Valve Spring 2 40070 269-33701-03 Spring Retainer 2 40080 277-33401-H3 Intake Valve 1 40090 277-33501-H3 Exhaust Valve 1 40095 132-10KA0-31 Collet Valve 4 400150 277-35601-11 Timing Chain Cp 1 400160 277-36911-03 Tentioner 1 400163 277-37101-03 Spring, tentioner 1 400166 277-36902-03 Pin, tentioner 1 400170 277-36913-13 Chain Guide 1 400200 277-35002-01 Pin Cp, rocker 1 400202 003-13050-00 Clip 1 400220 277-36201-00 Rocker Arm Ay, intake 1 400225 277-36202-00 Rocker Arm Ay, exhaust 1 400230 014-90500-20 Adjust Screw 1 400231 014-90500-20 Adjust Screw 1 400240 017-00500-30 Nut 1 400241 017-00500-30 Nut 1 400290 011-00600-20 Flange Bolt 1 400310 277-30111-J1 Muffl er Cp 1 400315 277-37601-01 Spark Arrester Cp 1 400317 015-00400-60 Tapping Screw 1 400320 277-34201-31 Muffl er Cover Cp 1 400340 277-35201-13 Tapping Screw 1 400350 980-20082-80 Muffl er Cover Cp 2 400360 015-20600-90 Gasket, muffl er 2 400361 011-00600-10 Flange Bolt 1 400365 011-00803-20 Flange Bolt 1 400385 277-37203-H1 Screen Cp 1 400387 015-00400-60 Tapping Screw 2 400540 277-32902-J1 Insulator Cp 1 400550 277-35903-J3 Gasket 2, insulator 1 400560 277-35902-J3 Gasket 1, insulator 1 400570 002-38060-00 Flange Nut 2 400580 011-00600-50 Flange Bolt 1 400850 277-32760-08 Breather Pipe 1 400

PTX301D - 14 - 06-08

SECTION 4 INTAKE and EXHAUST GROUP

FIG. 415

PTX301D - 15 - 06-08

REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.

SECTION 4 INTAKE and EXHAUST GROUP

510 277-32615-20 Air Cleaner Ay 1 415-200 277-32630-18 Base Cp 1 415-210 277-32610-08 Packing 1 415-220 277-32604-08 Packing 1 415-250 277-32640-08 Cover Cp 1 415-260 277-32609-08 Label 1 415-270 277-32741-18 Wing Nut 1 415-272 277-32607-08 Wing Nut 1 415-520 277-32611-07 Element Set 1 415

PTX301D - 16 - 06-08

SECTION 5 GOVERNOR GROUP

FIG. 500

PTX301D - 17 - 06-08

REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.

SECTION 5 GOVERNOR GROUP

10 277-42301-23 Governor Lever 1 50020 277-42201-33 Governor Shaft 1 50030 277-42701-11 Governor Rod Cp 1 50040 277-42801-23 Rod Spring 1 50050 003-13050-00 Clip 1 50060 013-00602-40 Bolt and Washer Ay 1 50070 018-60600-20 Nut 1 50080 277-42510-13 Governor Spring 1 500310 277-43303-03 Speed Control Lever 1 500340 277-43502-03 Stop Plate 1 500350 277-44501-03 Washer 1 500355 021-70600-70 Friction Washer 1 500360 004-31062-50 Screw, panhead 1 500365 237-45004-23 Spring, adjust 1 500435 277-46002-02 Speed Control Bracket Un 1 500450 002-35060-00 Self Lock Nut 1 500485 011-00600-20 Flange Bolt 2 500

PTX301D - 18 - 06-08

SECTION 6 COOLING and STARTING GROUP

FIG. 600

PTX301D - 19 - 06-08

REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.

SECTION 6 COOLING and STARTING GROUP

10 277-51201-11 Blower Housing Cp 1 60020 073-20054-70 Label, trademark 1 60040 011-00600-30 Flange Bolt 4 60060 277-52711-21 Baffl e 1 Cp, case 1 60061 277-52702-03 Baffl e 2, head 1 60080 001-04061-60 Flange Bolt 1 60081 011-00600-20 Flange Bolt 1 600210 277-50301-00 Recoil Starter Ay 1 Resin 600-1 226-50716-08 Spiral Spring 1 600-2 277-50121-08 Reel 1 600-3 277-50110-08 Starter Rope 1 600-4 281-50300-08 Starter Knob 1 600-5 281-50325-08 Ratchet 1 600-6 281-50330-08 Friction Spring 1 600-8 281-50340-08 Friction Plate 1 600-11 277-50145-08 Starter Pulley 1 600-49 281-50351-08 Center Screw 1 600220 013-00602-80 Bolt and Washer Ay 4 600

PTX301D - 20 - 06-08

SECTION 7 FUEL, LUBRICATION GROUP

FIG. 700

PTX301D - 21 - 06-08

REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.

SECTION 7 FUEL, LUBRICATION GROUP

10 277-60101-21 Fuel Tank Cp 1 70020 073-20051-81 Label, warning 1 70023 277-95111-03 Label, model 1 70030 043-04400-50 Fuel Tank Cap Cp 1 70040 X64-13600-10 Fuel Filter 1 70048 X50-51200-20 Union 1 70060 002-38060-00 Flange Nut 2 70063 011-00601-30 Flange Bolt 1 70070 277-62601-11 Fuel Pipe Cp 1 70080 X85-10613-51 Rubber Pipe 1 70090 X56-11100-60 Hose Clamp 2 700224 277-43801-01 Choke Lever Cp 1 700

PTX301D - 22 - 06-08

SECTION 7 FUEL, LUBRICATION GROUP

FIG. 740

PTX301D - 23 - 06-08

REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.

SECTION 7 FUEL, LUBRICATION GROUP

210 277-62302-30 Carburetor Ay 1 740-1 277-62535-08 Throttle Valve 1 #160 740-2 209-62351-08 Screw 1 740-3 277-62525-08 Choke Valve 1 740-5 246-62420-08 Pilot Jet 1 #40 740-8 277-62520-08 Choke Lever 1 740-11 277-62531-18 Throttle Shaft A 1 740-12 227-62451-08 Bolt 1 740-14 277-62500-08 Needle 1 740-15 277-62515-08 Pin 1 740-16 277-62506-08 Float Body Ay 1 740-17 214-62450-08 Packing 1 740-18 214-62540-08 Chamber Packing 1 740-19 226-62506-08 Float 1 740-20 277-62440-08 Main Nozzle 1 740-22 226-62412-08 Main Jet 1 #80 740-24 226-62701-18 Clip 1 740-28 277-62360-08 Bolt 1 740-40 106-62556-08 Screw 1 740-41 283-62357-08 Spring 1 740-44 248-62410-08 Air Jet 1 740-45 106-62410-08 Air Jet, pilot 1 740-62 236-62680-08 Seal 1 740-79 236-62541-08 Packing 1 740-102 246-62390-08 Seal 1 740-144 277-62553-08 Nut 1 740-300 279-62103-10 Cock Body A 1 740-302 277-62110-18 Packing 1 740-303 277-62100-18 Cup 1 740-325 277-62552-08 O ring 1 740-327 165-62377-08 Screw 2 740

PTX301D - 24 - 06-08

SECTION 8 ELECTRIC DEVICE GROUP

FIG. 800

PTX301D - 25 - 06-08

REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.

SECTION 8 ELECTRIC DEVICE GROUP

10 277-79230-11 Flywheel Cp 1 80011 277-79431-01 Ignition Coil Cp 1 80030 001-14062-50 Bolt and Washer Ay 2 80050 277-73101-H1 Wire 1 Cp 1 800100 065-01401-50 Spark Plug 1 800110 065-50002-70 Spark Plug Cap 1 800700 277-76301-21 Oil Sensor Cp 1 800705 KU3-11071-01 Control Unit 1 800740 001-14061-60 Bolt and Washer Ay 2 800741 015-00400-90 Tapping Screw 2 800780 056-90000-20 Purse Lock 1 800

PTX301D - 26 - 06-08

SECTION 9 ACCESSORY GROUP

FIG. 900

PTX301D - 27 - 06-08

REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.

SECTION 9 ACCESSORY GROUP

10 277-90301-H0 Tool Kit 1 900

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