| Item | Part No. | Part Name | Qty | Serial No. |
| (37B-01-11101) | ENGINE ASS'Y | 17583- | ||
| 1 | YM129407-21100 | CRANKSHAFT ASS'Y | 17583- | |
| 2 | YM129100-01580 | PIN | 17583- | |
| 4 | YM129150-21200 | GEAR | 17583- | |
| 5 | YM22512-070140 | KEY | 17583- | |
| 7 | YM22351-040010 | PIN | 17583- | |
| 8 | YM171301-21650 | PULLEY | 17583- | |
| 9 | YM129795-21661 | WASHER | 17583- | |
| 10 | YM121850-21680 | BOLT | 17583- | |
| 11 | YM121111-21501 | BOLT | 17583- | |
| 12 | YM129489-21590 | FLYWHEEL ASS'Y | 17583- | |
| 14 | YM119865-21600 | GEAR | 17583- | |
| 15 | YM129001-22070 | PISTON | 17583- | |
| YM129001-22930 | PISTON¤ 0.25MM (OS) | 17583- | ||
| 17 | YM129001-22500 | PISTON RING ASS'Y | 17583- | |
| YM129001-22950 | PISTON RING ASS'Y,0.25MM (OS) | 17583- | ||
| 21 | YM129202-22300 | PIN | 17583- | |
| 22 | YM22252-000260 | RING | 17583- | |
| 23 | YM729402-23100 | CONNECTING ROD ASS'Y | 17583- | |
| 26 | YM129100-23910 | BUSHING | 17583- | |
| 27 | YM121550-23200 | BOLT | 17583- | |
| 28 | YM129150-23600 | CRANK PIN METAL A. | 17583- | |
| YM129150-23610 | CRANK PIN METAL A.,0.25MM (US) | 17583- |