Not for Reproduction 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. PRINTED IN U.S.A. FORM MS5955--Rev N--02/27/2015 REPLACES FORM MS5955--Rev M--09/12/2014 FILE IN SECT. 2 OF SERVICE MANUAL 12J900 Illustrated Parts List Model Series 12J900 TYPE NUMBERS 0001 through 4138. TABLE OF CONTENTS 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 ..............................
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COPYRIGHT by BRIGGS & STRATTON CORPORATIONAll 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, withoutpermissionin writing from Briggs & Stratton Corporation.
PRINTED IN U.S.A.
FORM MS5955--Rev N--02/27/2015REPLACES FORM MS5955--Rev M--09/12/2014
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
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
118
97
975
133
134
125
617
95130
633
127
163
276
137
104
365
276
276
117
97
975
133
134
617
95
130
633163
276
137
104
276276
108
692
633A
125A 109A
127
118A
117A
975
133
134617
231
130
163
276
137
104
276
125B
127
117B
276
118B
97
633
108A
633A
141
134
121 CARBURETOR OVERHAUL KIT
104
127137
163633
617
633A276
930
972
957A
972B
957A957B
670
190
1059
601
187
187A
601
601A
958
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12J900
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
613
81
883
970
443A
445A
535
968B
425A
300832
836
883
291
836832B
836B
467
163
11B
966B
976
677A
676F
677A
676 676C
677A 677A
994676E
677A
994B
677A
676D
677A
676A
677A
677
676B
677A
976
163
11B
966A
11B
966
163
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12J900
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
616
404
615
505
562
202
188
265
267
270271
268
621
227
222
668
269
209
745
356
222C
621
668
843A843
222D
668
265A
578
356C
236 923
621 922A
334
362
333A
851A
333
851635
923A
621 922A
789B
222G
668
621222K
668
910
474
1119
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12J900
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
564
604
921L
969A969A
921A
969
921C
921G
969A
921H
969A
921J
969A
921K
969A
921P
969A
921U
969A
604A
564A
604B
564B
604C
564B
930A
930
921E
969
921N
969A
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12J900
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
305
304
78
37
1036 EMISSIONS LABEL
363
23
73
455
332
1005
60
58
592
65
597
456
689
459
1210
1211
55
608
564
925
60C
23A
305
1387
1388
1386
853
309
697
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REF. PART REF. PART REF. PARTNO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION
12J900
5955--8 Assemblies include all parts shown in frames. 02/27/2015
16 797017 CrankshaftUsed on Type No(s).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.-- -- -- -- -- -- -- Note -- -- -- -- --797018 CrankshaftUsed on Type No(s).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 CrankshaftUsed on Type No(s).0003, 0006, 0112,0116, 0118, 0121,0134, 0135, 0142,0159, 1112, 1116,1118, 1135, 1142,1159.797372 CrankshaftUsed on Type No(s).0111.797681 CrankshaftUsed on Type No(s).0153, 1153.
20 399781s Seal--Oil(PTO Side)(Auxiliary PTO)
22 691092 Screw(CrankcaseCover/Sump)
23 691987 Flywheel23A 591282 Flywheel
Used on Type No(s).0111, 0112, 1112.
24 222698s Key--Flywheel
25 590404 Piston Assembly(Standard)(Used After Code Date07090300).-- -- -- -- -- -- -- Note -- -- -- -- --795429 PistonAssembly(Standard)(Used Before CodeDate 07090400).791096 PistonAssembly(Standard)(Used Before CodeDate 07090400).591284 PistonAssembly(Standard)(Plated)Used on Type No(s).0001, 0002, 0005,0167.590405 PistonAssembly(.020” Oversize)(Used After Code Date11063000).797303 PistonAssembly(.020” Oversize)(Used After Code Date09041600 and BeforeCode Date 11070100).799064 PistonAssembly(.020” Oversize)(Used Before CodeDate 09041700).
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REF. PART REF. PART REF. PARTNO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION
12J900
5955--9 Assemblies include all parts shown in frames. 02/27/2015
9
26 590402 Ring Set(Standard)(Used After Code Date11063000).-- -- -- -- -- -- -- Note -- -- -- -- --797304 Ring Set(Standard)(Used After Code Date09041600 and BeforeCode Date 11070100).795431 Ring Set(Standard)(Used After Code Date07090300 and BeforeCode Date 09041700).791098 Ring Set(Standard)(Used After Code Date04031400 and BeforeCode Date 07090400).499425 Ring Set(Standard)(Used Before CodeDate 04031500).591286 Ring Set(Standard)(Plated)Used on Type No(s).0001, 0002, 0005,0167.590403 Ring Set(.020” Oversize)(Used After Code Date11063000).797305 Ring Set(.020” Oversize)(Used After Code Date09041600 and BeforeCode Date 11070100).795432 Ring Set(.020” Oversize)(Used After Code Date07090300 and BeforeCode Date 09041700).791324 Ring Set(.020” Oversize)(Used After Code Date04102100 and BeforeCode Date 07090400).499427 Ring Set(.020” Oversize)(Used Before CodeDate 04102200).