| Item | Part No. | Part Name | Qty | Serial No. |
| (257-20-21500) | ENGINE ASS'Y | 1501- | ||
| 1 | KT15426-0402-1 | GEAR CASE ASS'Y | 1501- | |
| 2 | KT15221-3362-1 | PLUG | 1501- | |
| 3 | KT15221-3364-1 | PLUG | 1501- | |
| 4 | KT15221-0349-3 | PLUG | 1501- | |
| 5 | KT15321-9626-3 | PLUG | 1501- | |
| 6 | KT15221-7288-1 | PIPE,WATER | 1501- | |
| 7 | KT04811-00150 | O-RING | 1501- | |
| 8 | KT15221-5628-2 | PIN | 1501- | |
| 9 | KT15321-7334-1 | PIPE,WATER | 1501- | |
| 10 | KT15601-04131 | GASKET | 1501- | |
| 11 | KT01153-50885 | BOLT | 1501- | |
| 12 | KT15521-9101-1 | BOLT | 1501- | |
| 13 | KT01153-50870 | BOLT | 1501- | |
| 14 | KT04512-50080 | WASHER,SPRING | 1501- | |
| 15 | KT07715-00803 | BALL | 1501- | |
| 16 | KT15221-3844-1 | SPRING | 1501- | |
| 17 | KT15221-3842-1 | CAP | 1501- | |
| 18 | KT04811-00100 | O-RING | 1501- | |
| 19 | KT04811-00360 | O-RING | 1501- | |
| 20 | KT15223-8334-2 | COVER | 1501- | |
| 21 | KT15221-8813-1 | GASKET | 1501- | |
| 22 | KT15221-8821-1 | STUD | 1501- | |
| 23 | KT02056-50060 | NUT | 1501- | |
| 24 | KT04512-50060 | WASHER,SPRING | 1501- | |
| 25 | KT04012-50080 | WASHER | 1501- |