Briggs & Stratton 21B900 Series Illustrated Parts List

REPLACES FORM MS−5036−03/04/2008

Illustrated Parts List

Model Series

21B900

TYPE NUMBERS

0015 through 0202.

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−5036−06/18/2008

FILE IN SECT. 2 OF SERVICE MANUAL

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

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

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.

5036−2 Assemblies include all parts shown in frames. 06/18/2008

2

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. 06/18/2008

3

21B900

13

45

1026

850

914

1023

635

383

1022

337

705

5

192

1029

14

1034

830

1022

883

50

617

238

34

42

36

33

42

7

617

51

42

35

51

654

53

50B

617

868

51

1095 VALVE GASKET SET

7

51

868

1022

54

186

358 ENGINE GASKET SET

3

12

7

20

51

524

9

617

691

842

868

883

1266A

415

943

1022

1266

Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.

5036−4 Assemblies include all parts shown in frames. 06/18/2008

4

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

95A

987A

51

133A

975A

137A

141A

634A

105A

104A

231

108A

117 118

98A

94A

1091

127A

135A

137A

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

276A

947A

51

95A

104A

1127

121A CARBURETOR OVERHAUL KIT

105A

127A

276A

977A CARBURETOR GASKET SET

51

NIKKI

137A

617

634A

137A

276A

987A

1266

1266A

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. 06/18/2008

5

21B900

305A

305

304

1040

431

1266

1266A

643

1040A

1036 EMISSIONS LABEL

1267

967

445

968

864

883

823

883

613A

81

613

676

677

300A300G

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. 06/18/2008

6