| Item | Part No. | Part Name | Qty | Serial No. |
| (257-20-21500) | ENGINE ASS'Y | 1501- | ||
| 1 | KT15601-5602-1 | LEVER ASS'Y | 1501- | |
| KT15521-5605-1 | FORK LEVER ASS'Y | 1501- | ||
| KT15521-5604-1 | LEVER ASS'Y | 1501- | ||
| 2 | KT15611-5612-1 | LEVER,FORK | 1501- | |
| 3 | KT15021-5616-4 | PIN | 1501- | |
| 4 | KT15411-5417-1 | PIN | 1501- | |
| 5 | KT15601-5423-1 | SPRING | 1501- | |
| 6 | KT15601-5443-1 | SCREW | 1501- | |
| 7 | KT15611-5613-1 | LEVER,FORK | 1501- | |
| 8 | KT15221-5615-1 | SHAFT | 1501- | |
| 9 | KT15021-5624-3 | BOLT | 1501- | |
| 10 | KT04512-50060 | WASHER,SPRING | 1501- | |
| 11 | KT15221-5623-5 | HOLDER | 1501- | |
| 12 | KT15221-6641-1 | BOLT | 1501- | |
| 13 | KT01123-50832 | BOLT | 1501- | |
| 14 | KT01023-50628 | BOLT | 1501- | |
| 15 | KT04012-50080 | WASHER | 1501- | |
| 16 | KT04012-50060 | WASHER | 1501- | |
| 17 | KT15601-5648-1 | SPRING,START | 1501- | |
| 18 | KT15221-5641-2 | SPRING,GOVERNOR | 1501- | |
| 19 | KT15521-5642-1 | SPRING,GOVERNOR | 1501- |