Briggs & Stratton 21B900 User Manual
Not for
Reproduction
REPLACES FORM MS--5036--06/18/2008
FILE IN SECT. 2 OF SERVICE MANUAL
Illustrated Parts List
Model Series
21B900
TYPE NUMBERS
0015 through 0206.
TABLE OF CONTENTS
Air Cleaner 6.........................
Alternator 9..........................
Blower Housing 6.....................
Camshaft 3...........................
Carburetor 5..........................
Controls 8............................
Crankshaft 3..........................
Cylinder 2............................
Cylinder Head 4.......................
Electric Starter 7......................
Engine Sump 2.......................
Fuel Supply 8.........................
Flywheel 7............................
Gasket Set -- Engine 4.................
Gasket Set -- Valve 4..................
Governor Spring 8....................
Exhaust System 6.....................
Ignition 8.............................
Intake Manifold 4.....................
Kit -- Carburetor Overhaul 5............
Lubrication 3.........................
Operator’s Manual 2..................
Piston, Rings, Connecting Rod 3.......
Rewind Starter 7......................
Valves 4..............................
Warning Label 2......................
FORM MS--5036--03/23/2009
21B900
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
21B900
1058 OPERATOR’S MANUAL
1
2
1319 WARNING LABEL
REQUIRED when replacing parts
with warning labels affixed.
11
10
584
9
1264
1263
552
691
850
306
307
718
22
15
4
12
20
1024A
965
4A
12
943
750
1017
20
415
1027
239
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5036--2 Assemblies include all parts shown in frames. 03/23/2009
2
Not for
Reproduction
21B900
847
523
842
525
25
26
24
27
28
27
29
32
16
46
45
146
524
357
758
757
741
43
1270
759
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5036--3 Assemblies include all parts shown in frames. 03/23/2009
3
Not for
Reproduction
21B900
13
45
1026
850
914
1023
635
383
1022
337
705
5
192
1029
14
1034
830
1022
53
883
654
50
51A
238
617
34
42
36
33
42
7
617
51A
186
415
42
35
51
51
868
54
358 ENGINE GASKET SET
1095 VALVE GASKET SET
1022
7
868
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
51
51A
883
7
3
9
883
20
12
943
524
617
51A
51
691
842
1022
868
1266
1266A
5036--4 Assemblies include all parts shown in frames. 03/23/2009
4
Not for
Reproduction
21B900
131
130
95
987
93
51
LMT / PART
NUMBER
LOCATIONS
975
137
142
133
105
104
106
141
634
127
98
108
94
1091
143
125A
131A
130A
975A
95A
987A
51
137A
133A
141A
217
634A
105A
104A
1127
947A
276A
108A
98A
141C
NIKKI
94A
127A
135A
137A
117
118
1091
51
93
95
276
950
121 CARBURETOR OVERHAUL KIT
104
105
106
127
977 CARBURETOR GASKET SET
51
WALBRO
137
142
276
137
617
634
276
987
1266
1266A
51
95A
104A
105A
652
This Illustration Represents Several
Carburetors. Parts Shown May Not
Be Included In All Kits.
121A CARBURETOR OVERHAUL KIT
98A
987A
634A
217
137A137A137A137A
51A
1266
1266A
617
127A
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5036--5 Assemblies include all parts shown in frames. 03/23/2009
5
Not for
Reproduction
21B900
304
1267
968
445
1139
967
773
643
187D
601
187A
431
1266
1036 EMISSIONS LABEL
1040A
305A
305
1040
601
1266A
300A
864
883
883
823
613A
81
613
676
300B
864
883
677
883
613B
676A
677
81
613
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5036--6 Assemblies include all parts shown in frames. 03/23/2009
6
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