| Item | Part No. | Part Name | Qty | Serial No. |
| \0.99 | (37B-01-11600) | ENGINE, ASSEMBLY | ||
| 1 | YM129509-21000 | CRANKSHAFT, ASSEMBLY | ||
| 2 | YM129100-01580 | PIN, DOWEL | ||
| 4 | YM119803-21200 | GEAR | ||
| 5 | YM22512-070140 | KEY | ||
| 7 | YM22351-030010 | PIN, SPRING | ||
| 8 | YM119802-21650 | PULLEY | ||
| 9 | YM129795-21661 | WASHER | ||
| 10 | YM121850-21680 | BOLT, FLANGED | ||
| 11 | YM121111-21501 | BOLT | ||
| 12 | YM129489-21590 | FLYWHEEL, ASSEMBLY | ||
| 14 | YM119865-21600 | GEAR, RING | ||
| 15 | YM129508-22080 | PISTON, ASSEMBLY | ||
| 17 | YM129004-22500 | RING, PISTON | ||
| 21 | YM129202-22300 | PIN | ||
| 22 | YM22252-000260 | RING, SNAP | ||
| 23 | YM729402-23100 | CONNECTING ROD, ASSEMBLY | ||
| 26 | YM121550-23200 | BOLT | ||
| 27 | YM129150-23601 | METAL, ASSEMBLY | ||
| 29 | YM129100-23910 | BUSHING | ||
| 30 | YM129150-23611 | METAL ASSEMBLY, UNDERSIZED | ||
| 32 | YM129508-22900 | PISTON, OVERSIZE 0.25MM | ||
| 34 | YM129004-22950 | PISTON RING ASSEMBLY, OS=0.25 |