FORM MS10488 REV C 10/09/2015
REPLACES MS10488 REV B 04/17/2015
FILE IN SECT. 2 OF SERVICE MANUAL
31R900
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 |
Reproduction |
|
Carburetor . . . . . . . . . . . . . . . . . . . . . . . . . |
4 |
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . |
6 |
Crankshaft . . . . . . . . . . . . . . . . . . . . . . . . . |
2 |
Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . |
2 |
for |
|
Cylinder Head . . . . . . . . . . . . . . . . . . . . . . |
3 |
Electric Starter . . . . . . . . . . . . . . . . . . . . . |
6 |
Engine Sump . . . . . . . . . . . . . . . . . . . . . . . |
2 |
Not |
|
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 |
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.
31R900
1036 EMISSIONS LABEL |
|
1058 OPERATOR’S MANUAL |
|
1319 WARNING LABEL |
|
|
|
|
|
28 |
29 |
32 |
|
|
|
1 |
2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
27 |
|
|
|
|
|
|
3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
306A |
|
|
|
|
|
|
|
|
|
43 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
25 |
27 |
|
|
|
|
|
|
|
|
|
|
|
11 |
|
|
|
|
|
|
|
|
718 |
|
|
|
|
|
684 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
584 |
|
|
|
306 |
|
|
|
|
|
|
|
|
|
9 |
850 |
|
|
|
|
|
|
6 |
|
|
552 |
691 |
1264 |
|
|||
26 |
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
13 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1263 |
|
|
|
307 |
|
Reproduction |
|
|
|
|
||||||
|
|
|
16 |
|
|
|
|
|||||||
|
|
|
|
|
|
16A |
|
758 |
1270 |
|
|
1024A |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
46 |
|
|
|
|
|
|
|
|
757 |
|
|
|
|
|
45 |
|
|
|
|
for741 |
|
|
|
|
|
|
|||
|
|
741 |
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
24 |
|
|
|
|
|
|
759 |
965 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
377 |
|
|
|
377 |
|
|
|
|
|
943 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
Not |
357 |
|
|
|
|
|
|
|
750 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4A |
|
|
|
|
|
|
|
|
|
|
|
4 |
|
|
|
|
|
|
|
847 |
|
847A |
|
|
|
|
|
|
|
|
12 |
|
1017 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
||
523 |
|
523 |
|
|
512 |
|
12 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
842 |
|
842 |
|
|
|
|
|
|
|
|
|
|
|
|
525 |
|
525A |
|
186A |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
20 |
|
|
|
|
|
|
|
|
|
|
20 |
|
|
|
19 |
415 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
524 |
|
|
524 |
|
|
|
|
22 |
15 |
|
|
|
1027 |
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
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
|
|
|
|
31R900 |
5 |
33 |
34 |
|
45 |
|
|
|||
|
|
|
|
13 |
|
42 |
868 |
42 |
1026 |
|
306A |
|
||
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
36 |
|
|
|
337 |
|
|
|
|
|
|
|
|
|
|
635 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
307 |
|
|
|
|
|
7 |
|
|
|
|
|
|
|
|
|
|
|
|
35 |
|
383 |
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
883 |
|
|
|
|
|
|
|
|
|
654 |
|
|
1022 |
|
|
|
|
|
50 |
|
|
|
|
|
|
|
|
|
|
|
|
|
||
53 |
|
|
238 |
|
|
|
|
51 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
1034 |
|
|
51A |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
617 |
|
|
|
|
830 |
|
|
|
617 |
|
|
|
|
|
|
|
192 |
|
|
|
|
|
415 |
54 |
|||
|
|
|
|
|
|
|
|
|||||
850 |
|
|
1029 |
|
|
|
|
|
|
|
|
|
|
1022 |
|
|
Reproduction |
|
|
|
|
||||
|
|
|
50A |
|
|
|
|
|||||
|
|
|
|
|
51 |
|
50B |
|
|
|
51 |
|
914 |
|
|
51A |
|
|
|
51 |
|
|
|
|
|
|
|
|
|
|
|
51A |
|
|
|
|
||
|
|
|
617 |
|
|
|
617 |
|
|
|
||
1023 |
|
|
|
|
53 |
|
|
|
|
|
||
|
|
|
|
|
51A |
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
186 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ofr |
|
|
|
54 |
415 |
654 |
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Not |
832 |
|
|
|
|
|
|
|
|
|
|
|
|
|
832A |
|
|
832B |
|
|
||
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
836 |
|
|
|
|
|
|
|
676 |
676A |
676B |
994 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
613B |
|
|
|
|
|
|
|
|
|
|
|
|
300 |
|
|
|
613 |
|
677 |
677A |
|
677 |
377 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
81 |
|
|
300B |
|
|
|
|
|
|
883 |
|
|
|
|
|
883 |
613B |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
864 |
|
|
|
|
|
|
864 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
883 |
|
|
|
613 |
|
|
883 |
|
|
|
|
|
|
|
|
81 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
613A |
|
|
||
|
|
|
|
|
|
|
|
|
|
|
||
|
823 |
|
|
|
|
823 |
|
|
|
|
|
|
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
10488--3 |
Assemblies include all parts shown in frames. |
10/09/2015 |
3
31R900
125 |
141 |
634B |
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
187 |
|
|
|
|
|
131A |
|
217 |
|
|
|
|
|
130A |
108B |
633 |
601 |
|
|
|
|
|
|
|
|
|
|||
95A |
|
118 |
|
|
|
||
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
633B |
|
98A |
117 |
|
|
|
|
|
|
|
|
|
|
|
|
51 |
|
|
94A |
|
|
|
|
|
|
|
|
112 |
|
|
|
|
|
|
|
318 |
|
|
|
|
|
|
1091 |
|
1478 |
|
|
|
105A |
|
|
|
|
|
|
|
127A |
|
|
951 |
|
|
|
|
|
|
|
1479A |
|
||
133A |
104A |
|
|
|
|
||
|
|
|
|
|
|||
|
|
422A |
|
|
|
||
|
|
|
|
|
|
|
|
|
|
135 |
|
|
|
216A |
|
|
|
|
|
|
|
|
|
|
|
137A |
|
|
|
1479 |
|
|
|
|
|
|
|
|
|
975A |
|
|
|
|
|
|
|
137A |
Reproduction |
|
|
||||
|
|
|
|
||||
|
|
|
|
121A CARBURETOR OVERHAUL KIT |
|
||
|
|
|
|
51 |
127A |
137A |
98A |
|
|
|
|
|
|
||
|
|
|
for |
104A |
633B |
|
|
|
|
|
|
|
|
|
|
1127 |
NIKKI |
105A |
633 |
1266 |
217 |
||
|
|
|
|
||||
|
276A |
|
|
51A |
617 |
1266A |
276A |
947A |
Not |
|
|
|
|
|
|
276A |
|
|
|
|
|
||
|
|
|
|
|
|
240
187 |
601 |
240A |
240B |
387A |
187A |
601 |
187B |
|
|
601 |
1139
773
187D |
601 |
918 |
958 |
|
|
|
601 |
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
|
|
|
|
|
|
31R900 |
304G |
|
|
|
|
|
|
|
|
|
|
|
1040 |
|
|
445B |
|
|
|
|
|
968B |
|
|
|
|
|
|
|
|
|
|
|
1040B |
|
|
|
|
305C |
305 |
|
|
|
|
1139 |
|
|
|
|
|
|
|
|
|
|
|
|
|
773 |
|
305B |
|
|
|
|
|
|
|
|
|
431B |
|
967B |
|
|
|
|
|
|
|
|
|
|
|
1266 |
964 |
Reproducti1005 on |
|
|||
|
|
|
|
|
||
|
|
|
|
608 |
324 |
|
|
|
|
|
|
65 |
|
|
|
|
|
|
415A |
|
|
|
Not |
for |
455 |
|
|
|
|
|
78 |
|
|
|
|
|
|
|
|
1044 |
|
|
|
|
37 |
|
|
78A |
|
|
|
|
|
37A |
|
|
|
|
|
|
|
|
|
|
|
363 |
23 |
1051 |
24 |
|
|
|
|
|
|
|
|
|
|
|
|
783 |
|
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