| Item | Part No. | Part Name | Qty | Serial No. |
| 23B-57-21000 | OPERATOR'S SEAT A. | 10001-10236 | ||
| 1 | 23B-57-21110 | SEAT ASS'Y | 10001-10236 | |
| 2 | 23B-57-21120 | SEAT ASS'Y | 10001-10236 | |
| 3 | 23B-57-21160 | CLAMP | 10001-10236 | |
| 4 | 23B-57-21150 | PLATE | 10001-10236 | |
| 5 | 01010-50614 | BOLT | 10001-10236 | |
| 6 | 01643-30623 | WASHER | 10001-10236 | |
| 7 | 23B-57-21130 | SLIDE,L.H. | 10001-10236 | |
| 8 | 23B-57-21140 | SLIDE,R.H. | 10001-10236 | |
| 9 | 01220-40825 | SCREW | 10001-10236 | |
| 10 | 01643-30823 | WASHER | 10001-10236 | |
| 11 | 01580-10806 | NUT | 10001-@ | |
| 12 | 01643-30823 | WASHER | 10001-@ | |
| 13 | 01643-30823 | WASHER | 10001-@ |