| Item | Part No. | Part Name | Qty | Serial No. |
| 20T-57-00010 | SEAT ASS'Y | 8501- | ||
| 1 | 205-57-72311 | CUSHION,SEAT | 8501- | |
| 2 | 20S-57-21210 | CUSHION,BACK | 8501- | |
| 3 | 205-57-63510 | LEVER | 8501- | |
| 4 | 203-57-21330 | SPACER | 8501- | |
| 5 | 01010-51020 | BOLT | 8501- | |
| 6 | 01602-21030 | WASHER,SPRING | 8501- | |
| 7 | 01010-51020 | BOLT | 8501- | |
| 8 | 01602-21030 | WASHER,SPRING | 8501- | |
| 9 | 205-57-63520 | ADJUSTER | 8501- | |
| 10 | 205-57-63530 | ADJUSTER | 8501- | |
| 11 | 205-57-63540 | BAR | 8501- | |
| 12 | 01580-11210 | NUT | 8501- | |
| 13 | 01643-31232 | WASHER | 8501- | |
| 14 | 20S-57-21130 | COVER | 8501- | |
| 15 | 01010-51020 | BOLT | 8501- | |
| 16 | 01602-21030 | WASHER,SPRING | 8501- | |
| 17 | 01643-31032 | WASHER | 8501- | |
| 18 | 01580-11210 | NUT | 8501- | |
| 19 | 01643-31232 | WASHER | 8501- |