Briggs & Stratton 21A900 User Manual
Illustrated Parts List
Model Series
21A900
TYPE NUMBERS
0101 through 0199.
TABLE OF CONTENTS
Air Cleaner 7. . . . . . . . . . . . . . . . . . . . . . . . .
Alternator 10. . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Housing 7. . . . . . . . . . . . . . . . . . . . .
Camshaft 3. . . . . . . . . . . . . . . . . . . . . . . . . . .
Carburetor 5, 6. . . . . . . . . . . . . . . . . . . . . . . . . .
Controls 9. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Crankshaft 3. . . . . . . . . . . . . . . . . . . . . . . . .
Cylinder 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cylinder Head 4. . . . . . . . . . . . . . . . . . . . . .
Electric Starter 8. . . . . . . . . . . . . . . . . . . . . .
Engine Sump 2. . . . . . . . . . . . . . . . . . . . . . .
Exhaust System 7. . . . . . . . . . . . . . . . . . . .
Flywheel 8. . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Supply 9. . . . . . . . . . . . . . . . . . . . . . . . .
Gasket Set − Engine 4. . . . . . . . . . . . . . . . .
Gasket Set − Valve 4. . . . . . . . . . . . . . . . . .
Governor Spring 9. . . . . . . . . . . . . . . . . . . .
Ignition 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intake Manifold 4. . . . . . . . . . . . . . . . . . . . .
Kit − Carburetor Overhaul 5. . . . . . . . . . . .
Lubrication 3. . . . . . . . . . . . . . . . . . . . . . . . .
Operator’s Manual 2. . . . . . . . . . . . . . . . . .
Piston, Rings, Connecting Rod 3. . . . . . .
Rewind Starter 8. . . . . . . . . . . . . . . . . . . . . .
Valves 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning Label 2. . . . . . . . . . . . . . . . . . . . . .
REPLACES FORM MS−5069−02/07/08
FILE IN SECT. 2 OF SERVICE MANUAL
FORM MS−5069−06/17/2008
21A900
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
21A900
1058 OPERATOR’S MANUAL
1
2
3
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
1024
965
750
943
1024A
4A
12
1017
20
415
1027
239
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5069−2 Assemblies include all parts shown in frames. 06/17/2008
2
21A900
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.
5069−3 Assemblies include all parts shown in frames. 06/17/2008
3
21A900
45
1026
914
1023
635
383
1022
337
705
14
13
5
192
1029
1034
830
1022
883
50
617
238
34
42
36
33
42
7
617
51
42
35
51
654
53
868
850
1095 VALVE GASKET SET
7
51
868
1022
54
358 ENGINE GASKET SET
3
12
7
20
51
524
9
617
691
842
868
883
943
1022
1266
1266A
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5069−4 Assemblies include all parts shown in frames. 06/17/2008
4
21A900
125
131
130
95
987
93
51
LMT / PART
NUMBER
LOCATIONS
133
142
104
105
141
See text
for correct
Choke
Shaft Kit.
141B
See text
for correct
Choke
Shaft Kit.
98
127
106
94
1091
141
634
141B
692
633
143
108
108
51
93
95
975
137
276
950
121 CARBURETOR OVERHAUL KIT
104
105
106
127
977 CARBURETOR GASKET SET
51
WALBRO
137
142
276
137
617
634
987
1266
1266A
276
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5069−5 Assemblies include all parts shown in frames. 06/17/2008
5
21A900
125A
131A
130A
975A
95A
987A
51
137A
133A
141A
634A
105A
104A
108A
98A
127A
135A
137A
117 118
94A
1091
137A
51
95A
104A
1127
121A CARBURETOR OVERHAUL KIT
105A
127A
617
977A CARBURETOR GASKET SET
51
NIKKI
137A
634A
137A
987A
1266
1266A
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5069−6 Assemblies include all parts shown in frames. 06/17/2008
6
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