| Item | Part No. | Part Name | Qty | Serial No. |
| 22M-57-21131 | Operator's Seat Assembly | 20509- | ||
| 1 | 22M-57-21150 | Seat Assembly | 20509- | |
| 2 | 22M-57-21160 | Lever | 20509- | |
| 3 | 22M-57-21170 | Adjuster, L.H. | 20509- | |
| 4 | 22M-57-21180 | Adjuster, R.H. | 20509- | |
| 5 | 22M-57-21190 | Seat | 20509- | |
| 6 | 22M-43-21410 | Nut | 20509- | |
| 7 | 22M-57-21440 | Spacer | 20509- | |
| 8 | 22M-57-21530 | Bolt | 20509- | |
| 9 | 22M-57-21430 | Washer | 20509- | |
| 10 | 01252-70816 | Bolt | 20509- | |
| 11 | 22M-57-21212 | Stopper | 20509- | |
| 12 | 01010-D1020 | Bolt | 20509- | |
| 13 | 01643-71032 | Washer | 20509- |