Briggs & Stratton 12H800 Series Setup guide

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PRINTED IN U.S.A.
FORM MS−0990−07/01/2008
REPLACES FORM MS−0990−05/08/2008
FILE IN SECT. 2 OF SERVICE MANUAL
12H800
Illustrated Parts List
Model Series
12H800
TYPE NUMBERS
0652 through 6699.
TABLE OF CONTENTS
Alternator 7. . . . . . . . . . . . . . . . . . . . . . . . . .
Air Cleaner 4. . . . . . . . . . . . . . . . . . . . . . . . .
Blower Housing/Shrouds 6. . . . . . . . . . . .
Camshaft 2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Carburetor 3. . . . . . . . . . . . . . . . . . . . . . . . .
Controls 5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Crankshaft 2. . . . . . . . . . . . . . . . . . . . . . . . .
Cylinder 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electric Starter 7. . . . . . . . . . . . . . . . . . . . . .
Electrical 7. . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Sump 2. . . . . . . . . . . . . . . . . . . . . . .
Exhaust System 4. . . . . . . . . . . . . . . . . . . .
Flywheel 7. . . . . . . . . . . . . . . . . . . . . . . . . . .
Flywheel Brake 7. . . . . . . . . . . . . . . . . . . . .
Fuel Supply 5. . . . . . . . . . . . . . . . . . . . . . . .
Governor Spring 5. . . . . . . . . . . . . . . . . . . .
Ignition 7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Kits/Gaskets 2 & 3. . . . . . . . . . . . . . . . . . . . . . . .
Lubrication 2. . . . . . . . . . . . . . . . . . . . . . . .
Piston Group 2. . . . . . . . . . . . . . . . . . . . . . .
Rewind Starter 7. . . . . . . . . . . . . . . . . . . . . .
Valves 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12H800
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
0990−2Assemblies include all parts shown in frames. 07/01/2008
2
10
3
128
9
718
307
306
383
635
337
13 5
7
51
54
50
11
33
36
40
15A
20A
20
15
22
1102
20
15
12
12
4A
4
847
523
287
524
525
842
9
883
1095 VALVE GASKET SET
7
45
34
35
40 45
12
9
7
3
358 ENGINE GASKET SET
883
842
617
524
163
51
20
20A
585
668
32
32A
27
26
27
25
29
28
83
743
101
721
715
24
146
741
16
43
46
374
46A
374
870
869
871
306A
635A
684
585
584
868
1019 LABEL KIT
1330 REPAIR MANUAL
1058 OPERATOR’S MANUAL
1319 WARNING LABEL
REQUIRED when replacing parts
with warning labels affixed.

12H800
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
0990−3Assemblies include all parts shown in frames. 07/01/2008
3
94
98
130
94 134
217
121 CARBURETOR OVERHAUL KIT
977 CARBURETOR GASKET SET
163
137 276
104
127
137
163
633
617
633A
276
617
633
633A
118
97
975
133
134
125
PRIMER SYSTEM
617
95
130
633
127
163
276
137
104
365
276
276 117
97
975
133
134
617
95
633
163
276
137
104
365
276
276
CHOKE SYSTEM
108
692
633A
125A
109A
127
118A
117A
94
98
AUTOCHOKE SYSTEM
97
975
133
134
617
231
130
633
163
276
137
104
276
108A
633A
125B 109B
127
117B
276
118B
633
217
109

12H800
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
0990−4Assemblies include all parts shown in frames. 07/01/2008
4
346
677
836
613
81
883
163
529
970
159
443A
445A
967A
968B
425A
966A
976
300 300A
676
832
676C
676B676A
832B832A
300B
994
613A
81
613B
81
836A
836 836B
677
677677
836
1387
1388
1386
883
291
976
163
529
966B
832E
836C

12H800
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
0990−5Assemblies include all parts shown in frames. 07/01/2008
5
670
190
240 601A
209 616
404
615
505
562
202
188
843A
843
265
267
270
271
268
621 227
98A
222
222E222D
222C222B222A
668
621
621
668
668
668
668
668
601
269
209B209A
958
187C187 187B187A
601
601A
601
601
972B
1059
957A
265A
267
265B
930
957
972
957A 957B
957B

12H800
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
0990−6Assemblies include all parts shown in frames. 07/01/2008
6
921E
969
921C
604A
564A
921B
969A
921
564
604
925
305
304
78
37
1036 EMISSIONS LABEL
921A
921F
921H
969A
604B
564B
921G
969A
969
969
969
969
921K
969A
921J
969A
921N
969A
921P
969A
604C
564B
921R
969A
564B
604D
921U
969A

12H800
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
0990−7Assemblies include all parts shown in frames. 07/01/2008
7
922A
923A
621
922
745
236
923
373
359
520
507
990A
990
664
500
940
259 1160
497
347
627
851
910
474
1119
356
935
892
333
356F
356D
356B
356A
789B
789A
1236
1009
363
23A
455
332
1005
60
58
592
65
597
456
689
459
1210
1211
55
608
334
851A
635A
333A
986
930A
930
356H
946
310
802
853
803
544
801
783A
651
513
785
784
783
937
742
309
545
510
853
697
783A
651
513
785
784
783
937
742
510
309A
923B 621 922A

12H800
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
0990−8Assemblies include all parts shown in frames. 07/01/2008
8
1 697322 Cylinder Assembly
2 399269 Kit−Bushing/Seal
(Magneto Side)
3K299819S Seal−Oil
(Magneto Side)
4 493279 Sump−Engine
−−−−−−− Note −−−−−
498983 Sump−Engine
Used on Type No(s).
1167, 1715, 1955,
1961, 2320, 2324,
2331, 2367, 2673,
2681, 3182.
696294 Sump−Engine
Used on Type No(s).
1375, 1376, 1379,
1717, 1718, 1719,
1730, 1731, 1732,
1735, 1754, 1781,
1792, 1795, 1809,
1811, 1959, 1960,
1996, 2002, 2042,
2043, 2108, 2326,
3181, 3187, 3188.
4A 493365 Sump−Engine
(Auxilliary PTO)
5 691160 Head−Cylinder
7K∅692249 Gasket−Cylinder Head
8 495786 Breather Assembly
9K∅699833 Gasket−Breather
10 94650 Screw
(Breather Assembly)
11 691781 Tube−Breather
12 K692232 Gasket−Crankcase
13 690912 Screw
(Cylinder Head)
15 691680 Plug−Oil Drain
(Square Socket)
15A 691093 Plug−Oil Drain
(Hex Socket)
KIncluded in Engine Gasket Set−Ref. No.358.
DIncluded in Carburetor Overhaul Kit−Ref. No. 121.
zIncluded in Carburetor Gasket Set−Ref. No. 977.
∅Included in Valve Gasket Set−Ref. No 1095.
REF. PART REF. PART REF. PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION

12H800
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
0990−9Assemblies include all parts shown in frames. 07/01/2008
9
16 691451 Crankshaft
(Used After Code Date
97011200).
−−−−−−− Note −−−−−
694442 Crankshaft
(Used Before Code
Date 97011300).
691450 Crankshaft
(Used After Code Date
97011200).
Used on Type No(s).
0823,1520,1530,1531,
1532,1533,1567,1705,
1718,1746,1747,1751,
1769,1782,1850,1851,
1905,1906,1907,1910,
1911,1912,1913,1915,
1916,1918,1923,1939,
1940,1950,1951,1952,
1972,1975,1979,1980,
1987,2018,2019,2024,
2029,2150,2313,2375.
2376,2379,2380,2609,
2610,2611,2612,2630,
2631,2649,2667,2677,
2678,2679,2686,3120,
3123,3138,3140,3167,
3176,3184,3187,3188.
694440 Crankshaft
(Used Before Code
Date 97011300).
Used on Type No(s).
0823,1520,1530,1531,
1532,1533,1567,2630,
2631.
692980 Crankshaft
(Used After Code Date
97011200).
Used on Type No(s).
0658,0660,1570,1758,
1760,1763,2670.
694443 Crankshaft
(Used Before Code
Date 97011300).
Used on Type No(s).
0658,0660,1758.
691452 Crankshaft
(Used After Code Date
97011200).
Used on Type No(s).
0664,0665,0666,0670,
0671,0672,0680,0840,
0866,0868,0873,0877,
0878,1150,1166,1170,
1171,1320,1326,1332,
1366,1368,1370,1371,
1372,1374,1375,1376,
1377,1378,1379,1544,
1559,1569,1723,1727,
1730,1731,1733,1734,
1736,1737,1738,1739,
1740,1748,1749,1770,
1771,1784,1785,1786,
1790,1794,1795,1801,
1803,1804,1805,1810,
1811,1814,1816,1818,
1821,1823,1825,1826,
1827,1829,1830,1831,
1832,1835,1837,1839,
1844,1845,1846,1847,
1849,1852,1914,1917,
1919,1920,1926,1932,
1935,1936,1941,1942,
1943,1947,1948,1958,
1959,1962,1964,1965,
1966,1967,1970,1973,
1976,1977,1983,1985,
1988,1991,1992,1993,
1994,1995,1996,2001,
2002,2006,2008,2009,
2010,2012,2014,2015,
2017,2023,2027,2028,
2035,2042,2043,2108,
2148,2149,2350,2644,
2669,2676,3130,3132,
3137,3166,3169,3170,
3181,3185,3186,3189,
3313,3314,3315,3320,
3322,3323,3325.
694059 Crankshaft
(Used Before Code
Date 97011300).
Used on Type No(s).
0866,0868,0873,0877,
1166,1170,1332,1366,
1368,1370,1371,1544,
1559,1569,1977.
691455 Crankshaft
(Used After Code Date
97011200).
Used on Type No(s).
1149,1548,1701,1925,
2312,2313,2314,2315,
2316,2324,2328,2352,
2360,2370,2373,2381,
2383,2384,2394,2395,
2396,3172,3173,3180,
3318,3319.
691375 Crankshaft
(Used Before Code
Date 97011300).
Used on Type No(s).
1149,1548.
692822 Crankshaft
Used on Type No(s).
1766.
691482 Crankshaft
Used on Type No(s).
1961,2329,2334, 3183.
694079 Crankshaft
Used on Type No(s).
1717,1767,1768,1775.
692717 Crankshaft
Used on Type No(s).
1955,1986,3178.
694478 Crankshaft
Used on Type No(s).
1777.
694849 Crankshaft
Used on Type No(s).
1714,1726,2013,2044,
2349,2383,2391,2635,
2683.
694850 Crankshaft
Used on Type No(s).
1836,2331,2333,2681.
696009 Crankshaft
Used on Type No(s).
1720,1776,1778,1840,
1841,2032,2036,2039,
2040.
696290 Crankshaft
Used on Type No(s).
2320.
691454 Crankshaft
Used on Type No(s).
1706,2151.
791061 Crankshaft
Used on Type No(s).
2037,2038.
KIncluded in Engine Gasket Set−Ref. No.358.
DIncluded in Carburetor Overhaul Kit−Ref. No. 121.
zIncluded in Carburetor Gasket Set−Ref. No. 977.
∅Included in Valve Gasket Set−Ref. No 1095.
REF. PART REF. PART REF. PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION

12H800
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
0990−10 Assemblies include all parts shown in frames. 07/01/2008
10
20 K399781S Seal−Oil
(PTO Side)
20A K691952 Seal−Oil
(PTO Side)
(Auxilliary PTO)
22 691092 Screw
(Crankcase Cover/
Sump)
23A 691987 Flywheel
−−−−−−− Note −−−−−
691992 Flywheel
Used on Type No(s).
0667, 0878, 1149,
1167, 1369, 1548,
1559, 1569, 1701,
1714, 1715, 1726,
1729, 1750, 1786,
1802, 1807, 1817,
1822, 1824, 1836,
1849, 1919, 1932,
1941, 1942, 1948,
1955, 1961, 1967,
2005, 2009, 2013,
2016, 2037, 2038,
2044, 2320, 2324,
2331, 2333, 2349,
2367, 2383, 2391,
2635, 2669, 2673,
2681, 3133, 3178,
3179, 3183, 3324.
696291 Flywheel
Used on Type No(s).
1375, 1376, 1379,
1717, 1718, 1719,
1730, 1731, 1732,
1735, 1754, 1781,
1792, 1795, 1809,
1811, 1959, 1960,
1996, 2001, 2002,
2042, 2043, 2108,
2326, 3181, 3187,
3188.
24 222698S Key−Flywheel
25 795429 Piston Assembly
(Standard)
(Used After Code Date
07090300).
−−−−−−− Note −−−−−
791097 Piston
Assembly
(Standard)
(Used After Code Date
04031400 and Before
Code Date 07090400).
493262 Piston
Assembly
(Standard)
(Used Before Code
Date 97011300).
795430 Piston
Assembly
(.020” Oversize)
(Used After Code Date
07090300).
791326 Piston
Assembly
(.020” Oversize)
(Used After Code Date
04102100 and Before
Code Date 07040400).
499431 Piston
Assembly
(.020” Oversize)
(Used After Code Date
97011200 and Before
Code Date 04102200).
493386 Piston
Assembly
(.020” Oversize)
(Used Before Code
Date 97011300).
493387 Piston
Assembly
(.030” Oversize)
(Used Before Code
Date 97011300).
26 795431 Ring Set
(Standard)
(Used After Code Date
07090300).
−−−−−−− Note −−−−−
791098 Ring Set
(Standard)
(Used After Code Date
04031400 and Before
Code Date 07090400).
499425 Ring Set
(Standard)
(Used After Code Date
97011200 and Before
Code Date 04031500).
493261 Ring Set
(Standard)
(Used Before Code
Date 97011300).
795432 Ring Set
(.020” Oversize)
(Used After Code Date
07090300).
791324 Ring Set
(.020” Oversize)
(Used After Code Date
04102100 and Before
Code Date 07090400).
499427 Ring Set
(.020” Oversize)
(Used After Code Date
97011200 and Before
Code Date 04102200).
493389 Ring Set
(.020” Oversize)
(Used Before Code
Date 97011300).
493390 Ring Set
(.030” Oversize)
(Used Before Code
Date 97011300).
27 691866 Lock−Piston Pin
(Used After Code Date
97011200).
−−−−−−− Note −−−−−
691588 Lock−
Piston Pin
(Used Before Code
Date 97011300).
KIncluded in Engine Gasket Set−Ref. No.358.
DIncluded in Carburetor Overhaul Kit−Ref. No. 121.
zIncluded in Carburetor Gasket Set−Ref. No. 977.
∅Included in Valve Gasket Set−Ref. No 1095.
REF. PART REF. PART REF. PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION