| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | 238-54-17210 | FRAME | 20028- | |
| 2 | 237-54-11280 | CUSHION | 20028- | |
| 3 | 234-54-11470 | COLLAR | 20028- | |
| 4 | 237-54-11270 | CUSHION | 20028- | |
| 5 | 01010-51695 | BOLT | 20028- | |
| 6 | 234-54-11480 | PLATE | 20028- | |
| 6A | 238-54-11150 | WASHER | 20028- | |
| 7 | 01580-11613 | NUT | 20028- | |
| 8 | 01602-21648 | WASHER | 20028- | |
| 9 | 01643-31645 | WASHER | 20028- | |
| 10 | 238-54-17220 | FLOOR | 20028- | |
| 11 | 238-54-11170 | FLOOR | 20028- | |
| 12 | 238-54-17320 | PLATE | 20028- | |
| 13 | 238-54-17120 | COVER | 20028- | |
| 14 | 238-54-17310 | PLATE | 20028- | |
| 15 | 238-54-11340 | COVER | 20028- | |
| 16 | 01010-51225 | BOLT | 20028- | |
| 17 | 01010-51230 | BOLT | 20028- | |
| 18 | 01602-21236 | WASHER | 20028- |