| Item | Part No. | Part Name | Qty | Serial No. |
| \0.99 | (37D-01-11200) | ENGINE, ASSEMBLY | ||
| 1 | YM129004-21001 | CRANKSHAFT, ASSEMBLY | ||
| 2 | YM129100-01580 | PIN, DOWEL | ||
| 5 | YM119802-21201 | GEAR, CRANKSHAFT | ||
| 6 | YM22512-070140 | KEY | ||
| 8 | YM22351-030010 | PIN, SPRING | ||
| 9 | YM129004-21650 | PULLEY | ||
| 10 | YM129795-21661 | WASHER | ||
| 11 | YM121850-21680 | BOLT, FLANGED | ||
| 12 | YM121111-21501 | BOLT | ||
| 13 | YM129128-21590 | FLYWHEEL, ASSEMBLY | ||
| 16 | YM119865-21600 | GEAR, RING | ||
| 17 | YM129004-22080 | PISTON, ASSEMBLY | ||
| 19 | YM129004-22500 | RING, PISTON | ||
| 23 | YM129202-22300 | PIN | ||
| 24 | YM22252-000260 | RING, SNAP | ||
| 25 | YM729402-23100 | CONNECTING ROD, ASSEMBLY | ||
| 29 | YM129100-23910 | BUSHING | ||
| 30 | YM121550-23200 | BOLT | ||
| 31 | YM129150-23601 | METAL, ASSEMBLY | ||
| 33 | YM129150-23610 | METAL PIN, US=0.25 | ||
| 35 | YM129004-22900 | PISTON ASSEMBLY, OS=0.25 | ||
| 37 | YM129004-22950 | PISTON RING ASSEMBLY, OS=0.25 |