Briggs & Stratton 21A900 Series Setup guide

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PRINTED IN U.S.A.
FORM MS−5069−06/17/2008
REPLACES FORM MS−5069−02/07/08
FILE IN SECT. 2 OF SERVICE MANUAL
21A900
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. . . . . . . . . . . . . . . . . . . . . .

21A900
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5069−2Assemblies include all parts shown in frames. 06/17/2008
2
307
306
691
718
3
552
2
10
9
584
11
1263
1264
1
750
1027
943
1024
965
22
15
12
20
44A
12
20
1017
415
239
1058 OPERATOR’S MANUAL
REQUIRED when replacing parts
with warning labels affixed.
1319 WARNING LABEL
1024A
850

21A900
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5069−3Assemblies include all parts shown in frames. 06/17/2008
3
26
27
27
32
24
842
524
847
523
525
741
146
29
28
25
16
43
357
46
45
1270
757
758
759

21A900
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5069−4Assemblies include all parts shown in frames. 06/17/2008
4
42
51
53
54
654
617
635
13
830
1034
1022
883
7
238
36 868
35
1022
1023
914
1022
868
51
1095 VALVE GASKET SET
7
383
5
192
1022
943
12
9
7
3
358 ENGINE GASKET SET
868
691
524
51
20
617 883
1266
842
34
50
1029
45
1026
1266A
42
42
33
337
14
705
617 51
850

21A900
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5069−5Assemblies include all parts shown in frames. 06/17/2008
5
95
104
105
106
137
142
987
127
634
276
93
51
121 CARBURETOR OVERHAUL KIT
977 CARBURETOR GASKET SET
51 137 276
1266
1266A
950
276
137
104
105
142 1091
51
93
987
95
130
LMT / PART
NUMBER
LOCATIONS 106
125
131
98
94
133
975
WALBRO
143
633
108
141B
692
127
634 108
141
See text
for correct
Choke
Shaft Kit.
141
See text
for correct
Choke
Shaft Kit.
141B
617

21A900
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5069−6Assemblies include all parts shown in frames. 06/17/2008
6
977A CARBURETOR GASKET SET
51
121A CARBURETOR OVERHAUL KIT
95A
104A
105A
127A
617 634A
51
1266
1266A
987A
137A
137A
141A
108A
634A
1127
104A
105A
51
987A
95A
130A
NIKKI
98A
133A
94A
975A
131A
127A
117 118
137A
1091
125A
135A
137A
137A

21A900
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5069−7Assemblies include all parts shown in frames. 06/17/2008
7
445
1267
967
305
305A
643
968
304
1040
613
81
613A
883
883
823
613B
677
864
676
613
81
300A
300B
884
823
1040A
1266A
1266
431
1036 EMISSIONS LABEL
883
613B
832
1397
676A
677
836
300

21A900
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5069−8Assemblies include all parts shown in frames. 06/17/2008
8
697
783
1051
363
73
74
729A
802
579
1051
310
803
544
801
311
797
513
783
37A
597
456
689
459
56
57
55
58
65
1044
309
510
608
1090
455
37
23A
78
60
78A
23
729B
75
1070
1005
1005A 415A
1070A
73A
1005B

21A900
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5069−9Assemblies include all parts shown in frames. 06/17/2008
9
920
527
356B
1054
356
729
851
334
333
240 240A
918
601
187
601
385A
387
387A
385
957
972
601
187B
521
789
356A
356C
789A
601
187A
601
187B
601
187C
958
601A
216
202
232
267
265
209
222
188
616
404
614
562
505
227
559
621
268
269
271
270
359
507 520
373
1136
688
843
689A
261
687
559A

21A900
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5069−10 Assemblies include all parts shown in frames. 06/17/2008
10
877C
10 −16 AMP
474D
578 878
474B 474C
877A 877B
877
DUAL
CIRCUIT
DC ONLY
NOTE: All stators use a No. mounting screw.
1119
NOTE: The proper flywheel part number and/or the alternator magnet size will
determine the alternator type or output. See repair instruction manual
for additional information.
474A 1059 10591059
501A
526A
5 −9 AMP
1059
578578
501C
526A
501D
526B
501B
526B