1 (137-15111-02-00) CRANKCASE 1 . . . . . . . . . . . . 1
2 (137-15121-01-00) CRANKCASE 2 . . . . . . . . . . . . 1
3 99510-12016-00 PIN, DOWEL . . . . . . . . . . . . . . 2
4 98580-06035-00 SCREW, PAN HEAD
(92501-06035) . . . . . . . . . . . . . 2
5 98511-06025-00 SCREW PAN HEAD . . . . . . . . . 1
6 98501-06070-00 SCREW, PAN HEAD . . . . . . . . 5
7 98501-06090-00 SCREW, PAN HEAD
(92501-06090-00) . . . . . . . . . . . 1
8 98580-06040-00 SCREW, PAN HEAD . . . . . . . . 6
9 90116-08079-00 BOLT, STUD . . . . . . . . . . . . . . 4
10 137-11351-00-00 GASKET, CYLINDER . . . . . . . . 1
11 (137-11311-00-00) CYLINDER 1 . . . . . . . . . . . . . . 1
12 137-11181-01-00 GASKET, CYLINDER HEAD 1 . 1
13 (137-11111-12-00) HEAD, CYLINDER 1 . . . . . . . . . 1
14 92990-08200-00 WASHER, PLAIN . . . . . . . . . . . 4
15 95333-08600-00 NUT . . . . . . . . . . . . . . . . . . . . . 4
16 137-15353-00-00 GASKET, DRAIN . . . . . . . . . . . 1
17 90340-14119-00 PLUG, STRAIGHT SCRW
(102-15351-00) . . . . . . . . . . . . . 1
18 90338-19047-00 PLUG, SPEC’’L SHAPE
(137-15363-01) . . . . . . . . . . . . . 1
19 (93211-19064-00) O-RING . . . . . . . . . . . . . . . . . . 1
20 (137-13551-01-00) COVER, VALVE . . . . . . . . . . . . 1
21 93604-14012-00 PIN, DOWEL . . . . . . . . . . . . . . 2
22 98580-06018-00 SCREW, PAN HEAD . . . . . . . . 7
23 93103-28012-00 OIL SEAL, SW-TYPE . . . . . . . . 1
24 93210-12014-00 O-RING . . . . . . . . . . . . . . . . . . 1
25 93210-26033-00 O-RING . . . . . . . . . . . . . . . . . . 1
CRANKCASE
Ref. Part
No. Number Description Qty Remarks
A2
YA6
1 (372-15410-00-00) CRCS COVER ASSEMBLY L . . 1
2 99530-10014-00 PIN, DOWEL . . . . . . . . . . . . . . 4
3 (137-15418-00-00) COVER, CHAIN CASE . . . . . . . 1
4 93700-06M03-00 NIPPLE, GREASE . . . . . . . . . . 1
5 98580-06040-00 SCREW, PAN HEAD . . . . . . . . 2
6 98580-06550-00 SCREW PAN HEAD . . . . . . . . . 1
7 98580-06545-00 SCREW PAN HEAD . . . . . . . . . 1
8 98580-06055-00 SCREW, PANHEAD
(92501-06055) . . . . . . . . . . . . . 1
9 372-15415-00-00 COVER, GENERATOR . . . . . . . 2
10 92901-04100-00 WASHER, SPRING . . . . . . . . . . 4
11 (92503-04012-00) SCREW, PAN HEAD . . . . . . . . 4
12 (137-15451-00-00) GASKET, CRCS COVER . . . . . 1
13 (137-15421-04-00) COVER, CRANKCASE R . . . . . 1
14 137-15353-00-00 GASKET, DRAIN . . . . . . . . . . . 1
15 90340-14119-00 PLUG, STRAIGHT SCRW
(102-15351-00) . . . . . . . . . . . . . 1
16 (126-15433-00-00) CLEANER, DRAIN . . . . . . . . . . 1
17 92901-04100-00 WASHER, SPRING . . . . . . . . . . 2
18 (92503-04008-00) SCREW, PAN HEAD . . . . . . . . 2
19 (137-15361-00-00) GAUGE, LEVEL . . . . . . . . . . . . 1
20 (137-15363-00-00) PLUG, OIL . . . . . . . . . . . . . . . . 1
116-15363-00-00 PLUG, OIL . . . . . . . . . . . . . . . . 1
21 (93210-22028-00) O-RING . . . . . . . . . . . . . . . . . . 1
93210-13016-00 O-RING . . . . . . . . . . . . . . . . . . 1
22 98501-06075-00 SCREW, PAN HEAD . . . . . . . . 1
23 98580-06580-00 SCREW, PAN HEAD . . . . . . . . 1
24 92580-06560-00 SCREW PAN HEAD . . . . . . . . . 1
25 98580-06030-00 SCREW PAN HEAD . . . . . . . . . 5
CONTINUED ON NEXT FRAME ➤
CRANKCASE COVER
Ref. Part
No. Number Description Qty Remarks
A3
YA6
26 98580-06035-00 SCREW, PAN HEAD
(92501-06035) . . . . . . . . . . . . . 1
27 (137-15413-02-00) COVER, CARBURETOR . . . . . . 1
28 (137-15453-01-00) GASKET, CARB COVER . . . . . 1
29 98580-06550-00 SCREW PAN HEAD . . . . . . . . . 2
30 98503-06014-00 SCREW, PAN HEAD
(92501-06015) . . . . . . . . . . . . . 1
31 (137-14481-00-00) CAP, CARBURETOR . . . . . . . . 1
32 90480-12095-00 GROMMET (1) (137-15486-00) . 1
33 90480-12012-00 GROMMET . . . . . . . . . . . . . . . . 1
36 (137-15444-00-00) SCREW, FITTING . . . . . . . . . . . 1
37 98580-06018-00 SCREW, PAN HEAD . . . . . . . . 1
38 (92501-06150-00) SCREW, PAN HEAD . . . . . . . . 1
39 (137-15471-00-00) DUCT, AIR . . . . . . . . . . . . . . . . 1
40 (137-15472-00-00) SEAL, AIR DUCT . . . . . . . . . . . 1
41 92503-05008-00 SCREW, PAN HEAD . . . . . . . . 4
42 (137-15434-00-00) SEAL, CLEANER COVER . . . . 1
43 90430-06017-00 GASKET . . . . . . . . . . . . . . . . . 1
44 (137-14454-00-00) JOINT . . . . . . . . . . . . . . . . . . . 1
45 (90461-04010-00) CLAMP . . . . . . . . . . . . . . . . . . 1
CRANKCASE COVER
Ref. Part
No. Number Description Qty Remarks
A4
YA6
1 (137-11400-01-00) CRANKSHAFT ASSEMBLY . . . 1
(137-11412-00-00) CRANK 1 . . . . . . . . . . . . . . . . . 1
372-11635-09-00 PISTON 1 O/S 0.25
(0.25MM 1ST O.S)
(137-11635-61) . . . . . . . . . . . . . 1 KS
2 (137-11651-00-00) ROD, CONNECTING . . . . . . . . . 1
(372-11638-09-00) PISTON 4 O/S 1. 0 . . . . . . . . . . 1 KS
372-11636-09-00 PISTON 2 O/S 0.50
(0.50MM 2ND O.S)
(137-11636-61) . . . . . . . . . . . . . 1 KS
3 (93310-42417-00) BEARING, CYLINDER.# 0 . . . . 1
4 90209-24073-00 . WASHER, SPEC’’L SHAP . . . 2
5 (137-11422-00-00) CRANK 2 . . . . . . . . . . . . . . . . . 1
6 (137-11681-01-00) PIN, CRANK 1 . . . . . . . . . . . . . 1
7 93310-21606-00 BEARING, CYLINDER.# 0 . . . . 1
8 372-11631-09-96 PISTON STD (STD)
(137-11631-61-96) . . . . . . . . . . . 1 KS
9 137-11633-00-00 PIN, PISTON . . . . . . . . . . . . . . 1
10 93450-17025-00 CIRCLIP . . . . . . . . . . . . . . . . . . 2
11 (372-11601-20-00) PISTON RINGSET 2ND . . . . . . 1 KS
(372-11601-40-00) PISTON RINGSET 4TH . . . . . . . 1 KS
372-11601-00-00 PISTON RINGSET STD (STD)
(137-11610-00) . . . . . . . . . . . . . 1 KS
372-11601-10-00 PISTON RINGSET 1ST
(0.25MM 1ST O.S)
(137-11610-10) . . . . . . . . . . . . . 1
12 136-11561-00-04 SHIM, CRANK 1 . . . . . . . . . . . . 2
13 93306-30421-00 BEARING (B6304C3) . . . . . . . . 2
14 (136-11565-00-03) WASHER, BEARING CVR . . . . 1
15 (137-15369-00-00) GASKET, O/SL HSNG . . . . . . . 1
16 (137-15359-00-00) HOUSING, OIL SEAL . . . . . . . . 1
CONTINUED ON NEXT FRAME ➤
CRANK - PISTON
Ref. Part
No. Number Description Qty Remarks
A5
YA6
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