| Item | Part No. | Part Name | Qty | Serial No. |
| (257-20-21500) | ENGINE ASS'Y | 1501- | ||
| 1 | KT15521-1451-3 | COVER,HEAD | 1501- | |
| 2 | KT15521-1452-2 | GASKET | 1501- | |
| 3 | KT15451-9233-2 | NUT | 1501- | |
| 4 | KT15021-3366-1 | GASKET | 1501- | |
| 5 | KT15221-6663-3 | COVER | 1501- | |
| 6 | KT15221-6664-1 | GASKET | 1501- | |
| 7 | KT01023-50614 | BOLT | 1501- | |
| 8 | KT15221-3314-2 | PLUG | 1501- | |
| 9 | LT04811-50300 | O-RING | 1501- | |
| 10 | KT15221-6619-2 | HOLDER | 1501- | |
| 11 | KT01023-50614 | BOLT | 1501- | |
| 12 | KT15221-6628-3 | SPRING | 1501- | |
| KT15521-6604-1 | SHAFT ASS'Y,DECOMP | 1501- | ||
| 13 | KT15521-6632-1 | SHAFT | 1501- | |
| 14 | KT15520-6631-1 | SHAFT,DECOMP | 1501- | |
| 15 | KT15221-6635-1 | SCREW | 1501- | |
| 16 | KT15221-6636-1 | NUT | 1501- | |
| 17 | KT04811-06100 | O-RING | 1501- | |
| 18 | KT15221-6641-1 | BOLT | 1501- | |
| 19 | KT04512-50060 | WASHER,SPRING | 1501- | |
| 20 | KT15521-0514-1 | PLATE | 1501- | |
| 21 | KT15521-0515-1 | PLATE | 1501- | |
| 22 | KT15521-0567-1 | ELEMENT | 1501- | |
| 23 | KT15521-0537-1 | SHIELD,OIL | 1501- | |
| 24 | KT15521-9331-1 | SCREW | 1501- | |
| 25 | KT15521-0555-1 | JOINT | 1501- | |
| 26 | KT15521-0551-1 | PIPE | 1501- | |
| 27 | KT15401-0558-1 | CLAMP | 1501- |