| Item | Part No. | Part Name | Qty | Serial No. |
| 423-57-11801 | OPERATOR'S SEAT A. | 20001- | ||
| 423-57-11303 | SEAT ASS'Y | 20001- | ||
| 1 | 423-57-11320 | CUSHION,BACK | 20001- | |
| 2 | 423-57-11490 | BRACKET | 20001- | |
| 3 | 423-57-11380 | BOLT | 20001- | |
| 4 | 423-57-11310 | CUSHION,SEAT | 20001- | |
| 5 | 423-57-11450 | BRACKET | 20001- | |
| 6 | 423-57-11380 | BOLT | 20001- | |
| 7 | 423-57-11470 | BRACKET,L.H. | 20001- | |
| 8 | 423-57-11480 | BRACKET,R.H. | 20001- | |
| 9 | 423-57-11460 | BOLT | 20001- | |
| 10 | 423-57-11420 | BUSHING | 20001- | |
| 11 | 423-57-11430 | SCREW | 20001- | |
| 12 | 423-57-11440 | WASHER | 20001- | |
| 13 | 423-57-11330 | RECLINING ASS'Y | 20001- | |
| 14 | 423-57-11380 | BOLT | 20001- | |
| 15 | 423-57-11371 | COVER | 20001- | |
| 16 | 423-57-11160 | SCREW | 20001- | |
| 17 | 423-57-11350 | SLIDE,L.H. | 20001- | |
| 18 | 423-57-11340 | SLIDE,R.H. | 20001- | |
| 19 | 423-57-11390 | BOLT | 20001- | |
| 20 | 423-57-11360 | LEVER | 20001- | |
| 21 | 423-57-11410 | SCREW | 20001- | |
| 22 | 423-57-11400 | SUSPENSION ASS'Y | 20001- | |
| 23 | 423-57-11530 | ADJUSTER,TILT | 20001- | |
| 24 | 423-57-11520 | ABSORBER | 20001- | |
| 25 | 423-57-11510 | SPRING | 20001- | |
| 26 | 423-57-11630 | KNOB | 20001- | |
| 27 | 423-57-11640 | PIN | 20001- | |
| 28 | 423-57-11130 | NUT | 20001- | |
| 29 | 423-57-11150 | WASHER | 20001- | |
| 30 | 423-57-11810 | BOOT | 20001- | |
| 31 | 01010-51225 | BOLT | 20001- | |
| 32 | 01643-31232 | WASHER | 20001- | |
| 33 | 421-57-11141 | REST,ARM | 20001- | |
| 34 | 01010-50820 | BOLT | 20001- | |
| 35 | 01643-30823 | WASHER | 20001- |