Illustrated Parts List Model Series 12J900 TYPE NUMBERS 0001 through 4138. TABLE OF CONTENTS FORM MS5955--Rev N--02/27/2015 REPLACES FORM MS5955--Rev M--09/12/2014 FILE IN SECT. 2 OF SERVICE MANUAL 12J900 Air Cleaner... 4 Blower Housing... 7 Blower Housing Shrouds... 6 Camshaft... 2 Carburetor... 3 Controls... 5 Crankshaft... 2 Cylinder... 2 Electrical... 5 Engine Sump... 2 Exhaust System... 4 Flywheel... 7 Flywheel Brake... 5 Fuel Supply... 3 Governor Spring... 5 Ignition... 5 Kits/Gaskets... 2&3 Lubrication... 2 Piston Group... 2 Rewind Starter... 7 Valves... 2 PRINTED IN U.S.A. COPYRIGHT by BRIGGS & STRATTON CORPORATION All rights reserved. No part of this material may be reproduced or transmitted, in any form or by any means, electronic or mechanical, including photocopying, recording or by any information storage and retrieval system, without permission in writing from Briggs & Stratton Corporation.
1319 WARNING LABEL 1330 REPAIR MANUAL REQUIRED when replacing parts with warning labels affixed. 1 2 3 718 584 10 8 9 306 306A 585 684 307 7 11 13 5 50 54 635 362 25 26 3 337 383 28 27 27 29 358 ENGINE GASKET SET 20 34 33 36 35 32 32A 869 868 870 871 868 40 45 40 45 46 16 598 377 741 24 51 287 847 523 842 525 524 7 51 163 524 43 4 12 9 585 1095 VALVE GASKET SET 9 12 617 668 842 883 7 883 22 15 20 Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine. 5955-2 Assemblies include all parts shown in frames. 02/27/2015 2
125 97 125A 109A 163 633 127 130 134 95 617 133 104 975 137 117 125B 141 97 108A 633A 633 163 231 127 130 134 617 133 104 633A 692 365 163 108 127 121 CARBURETOR OVERHAUL KIT 104 127 137 617 134 163 633 633A 118 118A 187 957B 1059 601 670 190 972 972B 957A 930 187A 134 133 975 137 117A 97 633 130 95 617 104 975 137 601 957A 958 117B 118B 601A Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine. 5955-3 Assemblies include all parts shown in frames. 02/27/2015 3
966 11B 467 163 425A 966A 968B 970 163 976 535 11B 291 883 445A 443A 300 832 836 966B 163 976 832B 836B 11B 836 883 81 613 676 676A 676B 676C 676D 676E 676F 994 994B 677 Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine. 5955-4 Assemblies include all parts shown in frames. 02/27/2015 4
222 621 222C 621 222D 222G 621 222K 668 668 668 668 668 188 843 843A 202 209 236 923 621 922A 267 265 268 271 269 356 356C 265A 270 227 562 615 505 404 616 745 635 923A 333 851 621 922A 1119 474 334 578 333A 362 910 851A 789B Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine. 5955-5 Assemblies include all parts shown in frames. 02/27/2015 5
921A 921H 921L 969 921C 921J 921P 969 921E 921G 921K 921N 921U 930 564A 564B 564B 604 604A 604B 604C 930A 564 Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine. 5955-6 Assemblies include all parts shown in frames. 02/27/2015 6
608 55 65 592 1211 1210 58 60C 60 459 689 456 309 853 697 37 78 305 363 564 304 455 332 597 925 23A 1036 EMISSIONS LABEL 305 73 1005 1386 23 1388 1387 Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine. 5955-7 Assemblies include all parts shown in frames. 02/27/2015 7
REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 1 592890 Cylinder 2 796961 Kit--Bushing/Seal (Magneto Side) 3 299819s Seal--Oil (Magneto Side) 4 493279 Sump--Engine 5 590411 Head--Cylinder 691160 Head--Cylinder 7 799875 Gasket--Cylinder Head 692249 Gasket-- Cylinder Head - - - - - - Note - - - - - - 799874 Gasket--Cylinder Head 0001, 0002, 0005, 0007, 0008, 0167. 8 590395 Breather 9 699833 Gasket--Breather 10 691125 Screw (Breather ) 11 691781 Tube--Breather 11B 691923 Tube--Breather 12 692232 Gasket--Crankcase 13 590422 Screw (Cylinder Head) 690912 Screw (Cylinder Head) 15 691680 Plug--Oil Drain (Square Socket) 16 797017 Crankshaft 0001, 0002, 0005, 0007, 0113, 0115, 0122, 0123, 0124, 0125, 0127, 0130, 0131, 0138, 0140, 0141, 0145, 0148, 0156, 0162, 0163, 0165, 0167, 1115, 1122, 1124, 1125, 1131, 1138, 1140, 1145, 1148, 1156, 1162, 1163, 4124, 4138. 797018 Crankshaft 0008, 0106, 0117, 0119, 0120, 0126, 0128, 0129, 0136, 0137, 0143, 0147, 0149, 0158, 0160, 0168, 1117, 1119, 1120, 1128, 1129, 1136, 1143, 1147, 1160. 797019 Crankshaft 0003, 0006, 0112, 0116, 0118, 0121, 0134, 0135, 0142, 0159, 1112, 1116, 1118, 1135, 1142, 1159. 797372 Crankshaft 0111. 797681 Crankshaft 0153, 1153. 20 399781s Seal--Oil (PTO Side) (Auxiliary PTO) 22 691092 Screw (Crankcase Cover/Sump) 23 691987 Flywheel 23A 591282 Flywheel 0111, 0112, 1112. 24 222698s Key--Flywheel 25 590404 Piston 07090300). 795429 Piston Date 07090400). 791096 Piston Date 07090400). 591284 Piston (Plated) 0001, 0002, 0005, 0167. 590405 Piston (.020 Oversize) 797303 Piston (.020 Oversize) 09041600 and Before Code 799064 Piston (.020 Oversize) Date 09041700). 5955-8 Assemblies include all parts shown in frames. 02/27/2015 8
REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 26 590402 Ring Set 797304 Ring Set 09041600 and Before Code 795431 Ring Set 07090300 and Before Code Date 09041700). 791098 Ring Set 04031400 and Before Code Date 07090400). 499425 Ring Set Date 04031500). 591286 Ring Set (Plated) 0001, 0002, 0005, 0167. 590403 Ring Set (.020 Oversize) 797305 Ring Set (.020 Oversize) 09041600 and Before Code 795432 Ring Set (.020 Oversize) 07090300 and Before Code Date 09041700). 791324 Ring Set (.020 Oversize) 04102100 and Before Code Date 07090400). 499427 Ring Set (.020 Oversize) Date 04102200). 27 691588 Lock--Piston Pin 09041600). 691866 Lock--Piston Pin Date 09041700). 28 298909 Pin--Piston 09041600). 499423 Pin--Piston Date 09041700). 29 797306 Rod--Connecting 09041600). 499424 Rod-- Connecting Date 09041700). 32 691664 Screw (Connecting Rod) 32A 695759 Screw (Connecting Rod) 33 590394 Valve--Exhaust 34 590393 Valve--Intake 35 691270 Spring--Valve (Intake) 36 691270 Spring--Valve (Exhaust) 37 793756 Guard--Flywheel 40 692194 Retainer--Valve 43 691997 Slinger--Governor/Oil 45 690548 Tappet--Valve 46 691449 Camshaft 50 794305 Manifold--Intake 51 272199s Gasket--Intake 54 691650 Screw (Intake Manifold) 55 691421 Housing--Rewind Starter 58 280399s Rope--Starter (Cut To Required Length) 60 281434s Grip--Starter Rope 60C 799716 Grip--Starter Rope 65 690837 Screw (Rewind Starter) 12J900 73 691221 Screen--Rotating 78 691108 Screw (Flywheel Guard) 81 691740 Lock--Muffler Screw 95 691636 Screw (Throttle Valve) 97 493267 Shaft--Throttle (Metal) 696565 Shaft--Throttle (Plastic) 104 797622 Pin--Float Hinge 108 691182 Valve--Choke 108A 795935 Valve--Choke 08031200). 790844 Valve--Choke Date 08031300). 109A 498593 Shaft--Choke 117 798661 Jet--Main 494870 Jet--Main 117A 494870 Jet--Main 117B 590440 Jet--Main 498977 Jet--Main 08061900 and Before Code 691428 Jet--Main Date 08062000). 498977 Jet--Main 1140, 1156, 1159, 1160. 5955-9 Assemblies include all parts shown in frames. 02/27/2015 9
REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 118 798660 Jet--Main (High Altitude) 497315 Jet--Main (High Altitude) 118A 497315 Jet--Main (High Altitude) 118B 798661 Jet--Main (High Altitude) 694250 Jet--Main (High Altitude) 08061900 and Before Code 695042 Jet--Main (High Altitude) Date 08062000). 694250 Jet--Main (High Altitude) 1140, 1156, 1159, 1160. 121 498260 Kit--Carburetor Overhaul 125 799868 Carburetor (Primer System) 125A 690000 Carburetor (Choke System) 125B 799866 Carburetor 127 694468 Plug--Welch 130 691203 Valve--Throttle 696564 Valve--Throttle (Used With Plastic Throttle Shaft) 133 398187 Float--Carburetor 134 398188 Kit--Needle/Seat 137 796610 Gasket--Float Bowl (1/8 Thick) 693981 Gasket--Float Bowl (1/16 Thick) 141 796193 Shaft--Choke 163 795629 Gasket--Air Cleaner 187 791766 Line--Fuel (Cut to Required Length) 187A 791873 Line--Fuel (Molded) 188 690877 Screw (Control Bracket) 190 690940 Screw (Fuel Tank) 202 691829 Link--Mechanical Governor 209 691851 Spring--Governor 691292 Spring-- Governor 0112, 0115, 0116, 0118, 0119, 0120, 0121, 0124, 0128, 0134, 0136, 0142, 0143, 0149, 0153, 0158, 1112, 1115, 1116, 1118, 1119, 1120, 1124, 1128, 1136, 1142, 1143, 1153, 4124. 691290 Spring-- Governor 0111. 691291 Spring-- Governor 0106, 0117, 1117. 699056 Spring-- Governor 0008, 0129, 0159, 1129, 1159. 691852 Spring-- Governor 0137. 222 790143 Bracket--Control (Remote/Manual Friction)(Primer) 0106, 0113, 0115, 0116, 0121, 0122, 0123, 0126, 0127, 0130, 0131, 0156, 0159, 0162, 1122, 1131, 1140, 1147, 1148, 1156, 4124. - - - - - - Note - - - - - - 790143 Bracket Control 14021200). 0005, 0007, 0008, 0112, 0124, 0125, 0128, 0143, 0153, 1112, 1115, 1116, 1124, 1125, 1128, 1143, 1153. 790143 Bracket Control Date 14020300). 0001, 0002, 0005, 0112, 0118, 0119, 0120, 0124, 0125, 0129, 0134, 0136, 0138, 0142, 0143, 0145, 0147, 0148, 0160, 0163, 0165, 0167, 1112, 1115, 1116, 1118, 1119, 1120, 1124, 1125, 1129, 1136, 1138, 1142, 1143, 1145, 1159, 1160, 1162, 1163, 4138. 790143 Bracket Control Date 14012700). 0128, 0153, 1128, 1153. 5955-10 Assemblies include all parts shown in frames. 02/27/2015 10
REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 222C 222D 222G 692150 Bracket--Control (Variable Speed) (5 Position Manual Choke) 0111. 793754 Bracket--Control (Fixed Speed) 0117, 0158. - - - - - - Note - - - - - - 793754 Bracket--Control (Fixed Speed) Date 14012700). 0135, 1117, 1135. 593542 Bracket--Control 0003. - - - - - - Note - - - - - - 593542 Bracket--Control 14020200). 0001, 0002, 0118, 0119, 0120, 0129, 0134, 0136, 0138, 0142, 0145, 0147, 0148, 0160, 0163, 0165, 0167, 1118, 1119, 1120, 1124, 1125, 1129, 1136, 1138, 1142, 1145, 1159, 1160, 1162, 1163, 4138. 593542 Bracket--Control Date 14021300 and After Code Date 14020200). 0005, 0112, 0124, 0125, 0143, 1112, 1115, 1116, 1143. 593542 Bracket--Control Date 14021300 and After Code Date 14012600). 0128, 0153, 1128, 1153. 222K 593582 Bracket--Control 14012600). 0006, 0135, 0137, 0168, 1117, 1135. 227 690783 Lever--Governor Control 231 691636 Screw (Choke Valve) 236 691826 Link--Lockout 265 690798 Clamp--Casing 265A 691024 Clamp--Casing 267 691044 Screw (Casing Clamp) 268 691025 Casing--Control Wire (Cut To Required Length) 269 691026 Wire--Control (Cut To Required Length) 270 691027 Nut (Control Wire Casing) 271 691028 Lever--Control 271716 Washer--Sealing 287 690940 Screw (Dipstick Tube) 291 790830 Thermostat 300 593819 Muffler 692038 Muffler 0106, 0111, 01113, 0115, 0116, 0117, 0121, 0122, 0123, 0126, 0127, 0130, 0131, 1122, 1131, 1147, 1148, 4124. 790828 Muffler (Thermostat) 0001, 0137, 0149, 0156, 0158, 0159, 0160, 0162, 0163, 0165, 1140, 1156, 1160. 12J900 792677 Muffler 0140. 593581 Muffler (Thermostat) 0007, 0008,1159, 1162. 304 695892 Housing--Blower 0003, 0005, 0006, 0106, 0115, 0116, 0117, 0118, 0119, 0123, 0135, 0141, 0145, 0167, 0168, 1115, 1116, 1117, 1118, 1119, 1124, 1135, 1138, 1145, 4124, 4138. 493294 Housing--Blower 0002, 0111, 0112, 0113, 0122, 0125, 0126, 0128, 0129, 0130, 0131, 0134, 0136, 0142, 0143, 0147, 0148, 0153, 1112, 1122, 1125, 1128, 1129, 1131, 1136, 1142, 1143, 1147, 1148, 1153. 795071 Housing--Blower 0120, 0121, 0124, 0138. 790826 Housing--Blower 0007, 0137, 0149, 0158, 0160, 0163. 791291 Housing--Blower 0001, 0008, 0140, 0156, 0159, 0160, 0162, 1140, 1156, 1159, 1160, 1162. 305 691108 Screw (Blower Housing) 306 690450 Shield--Cylinder 306A 790836 Shield--Cylinder 307 690345 Screw (Cylinder Shield) 309 799045 Motor--Starter 5955-11 Assemblies include all parts shown in frames. 02/27/2015 11
REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 332 690662 Nut (Flywheel) 333 590454 Armature--Magneto 333A 590455 Armature--Magneto 0006, 0112, 0134, 0142, 0143, 0153, 1112, 1115, 1116, 1117, 1118, 1119, 1120, 1122, 1124, 1125, 1128, 1129, 1131, 1135, 1136, 1138, 1140, 1142, 1143, 1145, 1147, 1148, 1153, 1156, 1159, 1160, 1162. 334 691061 Screw (Magneto Armature) 337 593941 Plug--Spark 796112S Plug--Spark (Resistor) 697451 Plug--Spark (EMS) 356 692390 Wire--Stop 356C 690808 Wire--Stop 358 590508 Gasket Set--Engine 362 793351 Boot--Spark Plug 363 19069 Flywheel Puller 365 691688 Screw (Carburetor) 377 690979 Key--Timing 383 89838s Wrench--Spark Plug 404 690272 Washer (Governor Crank) 425A 443A 690670 Screw (Air Cleaner Cover) 692523 Screw (Air Cleaner Primer Base) 445A 491588s Filter--Air Cleaner Cartridge 455 791960 Cup--Flywheel 456 692299 Plate--Pawl Friction 459 281505s Pawl--Ratchet 467 790842 Knob--Air Cleaner 474 691991 Alternator 505 691251 Nut (Governor Control Lever) 523 499621 Dipstick 524 692296 Seal--Dipstick Tube 525 495265 Tube--Dipstick 535 493537s Filter--Pre Cleaner 562 691119 Bolt (Governor Control Lever) 564 690351 Screw (Control Cover) 564A 691142 Screw (Control Cover) 564B 698589 Screw (Control Cover) 578 398153 Wire 584 697734 Cover--Breather Passage 585 691879 Gasket--Breather Passage 592 690800 Nut (Rewind Starter) 597 691696 Screw (Pawl Friction Plate) 598 592587 Shim--End Play (0.012 Thick) 601 791850 Clamp--Hose 601A 691038 Clamp--Hose 604 691757 Cover--Control 604A 691344 Cover--Control 604B 790703 Cover--Control 604C 792418 Cover--Control 608 497680 Starter--Rewind 613 790833 Screw (Muffler) (1/4--20 x 2.75 Lg, 2.08 Shoulder Lg) 691340 Screw (Muffler) (1/4--20 x 2.75 Lg, 2.25 Shoulder Lg) 615 690340 Retainer--Governor Shaft 616 698801 Crank--Governor 617 270344s Seal--O Ring (Intake Manifold) 621 692310 Switch--Stop 633 691321 Seal--Choke/Throttle Shaft 633A 693867 Seal--Choke/Throttle Shaft 635 66538s Boot--Spark Plug 668 493823 Spacer 670 692294 Spacer--Fuel Tank 676 396548 Deflector--Muffler 676A 393756 Deflector--Muffler 676B 397931 Deflector--Muffler 676C 493871 Deflector--Muffler 676D 497682 Deflector--Muffler 676E 393760 Deflector--Muffler 676F 590745 Deflector--Muffler 677 690661 Screw (Muffler Deflector) (Thread Forming) 593440 Screw (Muffler Deflector) (Self Drilling)(Thread Forming) 684 690345 Screw (Breather Passage Cover) 5955-12 Assemblies include all parts shown in frames. 02/27/2015 12
REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 689 691855 Spring--Friction 692 690572 Spring--Detent 718 690959 Pin--Locating 741 797521 Gear--Timing (Metal) 08021700). 794388 Gear--Timing (Use Without Woodruff Key) Date 07093000 and After Code Date 08021800). 790345 Gear--Timing (Use Without Woodruff Key) Date 07100100). 691830 Gear--Timing (Uses Woodruff Key) 745 691648 Screw (Brake) 789B 792685 Harness--Wiring 832 590486 Guard--Muffler 832B 497683 Guard--Muffler 836 690664 Screw (Muffler Guard) 836B 690661 Screw (Muffler Guard) 842 691031 Seal--O Ring (Dipstick Tube) 843 691884 Sleeve--Lever (Speed Control) 843A 691895 Sleeve--Lever (Choke) 847 692047 Dipstick/Tube 851 493880s Terminal--Spark Plug 851A 692424 Terminal--Spark Plug 853 695268 Adapter--Wire 868 590410 Seal--Valve 697338 Seal--Valve 869 691155 Seat--Valve (Intake) 870 690380 Seat--Valve (Exhaust) 871 590409 Bushing--Valve Guide (Exhaust) 590409 Bushing--Valve Guide (Intake) 262001 Bushing--Valve Guide (Exhaust) 63709 Bushing--Valve Guide (Intake) 883 691881 Gasket--Exhaust 910 691094 Stud (Alternator) 921A 695886 Cover--Blower Housing 921C 695889 Cover--Blower Housing 921E 696262 Cover--Blower Housing 921G 795064 Cover--Blower Housing 921H 790037 Cover--Blower Housing 921J 790036 Cover--Blower Housing 921K 699984 Cover--Blower Housing 921L 791026 Cover--Blower Housing 921N 792675 Cover--Blower Housing 921P 792687 Cover--Blower Housing 921U 794355 Cover--Blower Housing 922A 692135 Spring--Brake 923 796387 Brake (Electric Starter) 923A 796136 Brake (Rewind Starter) 925 795403 Cover--Linkage 930 691919 Guard--Rewind 930A 691345 Guard--Rewind 957A 692046 Cap--Fuel Tank (Plastic) 957B 796577 Cap--Fuel Tank (Plastic) 958 698183 Valve--Fuel Shut Off (Plastic) 12J900 966 593580 Base--Air Cleaner 14020200). 0001, 0160, 0163, 0165, 1159, 1160, 1162, 1163. 966A 593942 Base--Air Cleaner Primer 14012600). 0128, 0135, 0153, 1117, 1128, 1135, 1153. - - - - - - Note - - - - - - 593942 Base--Air Cleaner Primer 14020200). 966B 795259 Base--Air Cleaner Primer 0106, 0113, 0115, 0116, 0117, 0121, 0122, 0123, 0126, 0127, 0130, 0131, 0137, 0149, 0156, 0158, 0159, 0162, 1122, 1131, 1140, 1147, 1148, 1156, 4124. - - - - - - Note - - - - - - 795259 Base--Air Cleaner Primer Date 14012700). 0128, 0135, 0153, 1117, 1128, 1135, 1153. 795259 Base--Air Cleaner Primer Date 14020300). 5955-13 Assemblies include all parts shown in frames. 02/27/2015 13
REF. PART REF. PART REF. PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION 968B 692298 Cover--Air Cleaner 969 690700 Screw (Blower Housing Cover) 691138 Screw (Blower Housing Cover) 970 691669 Screw (Air Cleaner Primer Bracket) 972 699392 Tank--Fuel (Plastic) 972B 699374 Tank--Fuel (Plastic) 975 796611 Bowl--Float 976 694395 Primer--Carburetor 994 398067 Arrestor--Spark 994B 792245 Arrestor--Spark 1005 691346 Fan--Flywheel 1036 Label--Emissions (Available From A Briggs & Stratton Authorized Dealer) 1059 692311 Kit--Screw/Washer 1095 590507 Gasket Set--Valve 1119 692979 Screw (Alternator) 1210 498144 Pulley/Spring (Pulley) 1211 498144 Pulley/Spring (Spring) 1319 794467 Label--Warning 1330 270962 Manual--Repair 1386 790848 Vane--Air (Autochoke System) 1387 790849 Spring--Air Vane 1388 790850 Screw (Air Vane) (Autochoke System) 5955-14 Assemblies include all parts shown in frames. 02/27/2015 14