Briggs & Stratton 31R900 User Manual
Not for
Reproduction
REPLACES MS10488 REV B 04/17/2015
Illustrated Parts List
Model Series
31R900
TYPE NUMBERS
0001, 0002, 0003, 0005 Thru 0047
TABLE OF CONTENTS
Air Cleaner 5.........................
Alternator 6..........................
Blower Housing 5....................
Camshaft 2..........................
Carburetor 4.........................
Controls 6...........................
Crankshaft 2.........................
Cylinder 2...........................
Cylinder Head 3......................
Electric Starter 6.....................
Engine Sump 2.......................
Exhaust System 3....................
Flywheel 5...........................
Fuel Supply 4........................
Gasket Set -- Engine 7................
Gasket Set -- Valve 7..................
Governor Spring 6....................
Ignition 6............................
Kit -- Carburetor Overhaul 4, 7...........
Lubrication 2.........................
Operator’s Manual 2..................
Piston, Rings, Connecting Rod 2......
Valves 3.............................
Warning Label 2......................
FORM MS10488 REV C 10/09/2015
FILE IN SECT. 2 OF SERVICE MANUAL
31R900
PRINTED IN U.S.A.
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.
COPYRIGHT by BRIGGS & STRATTON CORPORATION
Not for
Reproduction
31R900
28
25
26
27
46
45
1036 EMISSIONS LABEL
29
32
27
306
307
16
377
306A
1058 OPERATOR’S MANUAL
1
2
3
718
6
13
16A
24
24
377
758
757
1319 WARNING LABEL
552
691
1270
759
684
584
9
43
11
850
1264
1263
1024A
965
943
847
523
842
525
524
847A
523
525A
842
524
741
512
186A
357
741
750
4C
4A
4
19
1017
20
415
1027
12
20
22
12
15
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
10488--2 Assemblies include all parts shown in frames. 10/09/2015
2
Not for
Reproduction
31R900
914
850
1023
53
1022
654
307
5
192
306A
238
830
1029
50A
1034
51A
1022
617
883
186
832
53
51
33
42
34
13
868
42
36
7
35
51
51A
617
50B
51
51A
617
51A
54
50
415
1026
337
635
383
415
654
45
617
54
51
832A
836
676
300B
883
864
883
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
677
823
676A
613B
677A
677
994676B
81
377
613
613B
300
883
864
883
823
832B
613
81
613A
10488--3 Assemblies include all parts shown in frames. 10/09/2015
3
Not for
Reproduction
31R900
125
131A
130A
95A
633B
51
133A
975A
141
108B
105A
104A
137A
634B
217
633
98A
127A
135
137A
187
94A
1091
117
601
118
422A
51
318
121A CARBURETOR OVERHAUL KIT
112
1478
951
216A
137A
127A
1479A
1479
98A
187
240
1127
601
276A
947A
276A
240A
187A
NIKKI
240B
601
187B
387A
601
104A
105A
51A
187D
1139
773
601
633B
633
617
918
601
1266
1266A
217
276A
958
601
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
10488--4 Assemblies include all parts shown in frames. 10/09/2015
4
Not for
Reproduction
304G
968B
31R900
1040
445B
1040B
431B
1266
964
1139
773
967B
305C
78
608
455
305
305B
324
65
415A
1044
37
1005
363
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
10488--5 Assemblies include all parts shown in frames. 10/09/2015
5
23
37A
1051
783
78A
24
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