| Item | Part No. | Part Name | Qty | Serial No. |
| 21Y-70-00161 | BOOM ASS'Y | 1001- | ||
| 1 | \6\ | BOOM | 1001- | |
| 2 | 21Y-70-15A30 | PLATE (WELDED) | 1001- | |
| 202-70-61XA0 | BRACKET (WELDED) | 1001- | ||
| 3 | \6\ | BRACKET (WELDED) | 1001- | |
| 4 | 203-46-41130 | SEAT (WELDED) | 1001- | |
| 5 | 203-70-66110 | BUSHING | 1001- | |
| 6 | 07145-00070 | SEAL,DUST | 1001- | |
| 7 | 07145-00070 | SEAL,DUST | 1001- | |
| 8 | 201-06-71280 | WORK LAMP ASS'Y | 1067- | |
| 8 | 20Y-06-21480 | WORKING LAMP ASS'Y | 1001-1066 | |
| 9 | 203-06-56410 | BRACKET | 1001- | |
| 9A | 01010-81225 | BOLT | 1001- | |
| 9B | 01643-31232 | WASHER | 1001- | |
| 10 | 202-70-61210 | PIN | 1001- | |
| 11 | 21W-70-11310 | PLATE | 1001- | |
| 12 | 01010-81230 | BOLT | 1001- | |
| 13 | 01643-31232 | WASHER | 1001- | |
| 14 | 20U-70-31340 | SPACER, 1.0MM | 1313- | |
| 14 | 203-70-11210 | SPACER, 1.0MM | 1001-1312 | |
| 14 | 20U-70-31330 | SPACER, 0.5MM | 1313- | |
| 14 | 203-70-34270 | SPACER, 0.5MM | 1001-1312 | |
| 15 | 202-70-61180 | PIN | 1001- | |
| 16 | 01019-11640 | BOLT | 1001- | |
| 17 | 01580-11613 | NUT | 1001- | |
| 18 | 21Y-70-14830 | SPACER, 1.0MM | 1313- | |
| 18 | 203-70-41460 | SPACER, 1.0MM | 1001-1312 | |
| 19 | 21K-70-11410 | PLATE | 1001- | |
| 20 | 203-70-61320 | PIN | 1001- | |
| 21 | 21W-70-11310 | PLATE | 1001- | |
| 22 | 01010-81230 | BOLT | 1001- | |
| 23 | 01643-31232 | WASHER | 1001- | |
| 24 | 21Y-70-14830 | SPACER, 1.0MM | 1313- | |
| 24 | 203-70-41460 | SPACER, 1.0MM | 1001-1312 | |
| 25 | (21Y-63-X2900) | CYLINDER GROUP,L.H. (SEE FIG.Y1620-01A0) | 1001- | |
| 25 | (21Y-63-X2910) | CYLINDER GROUP,R.H. (SEE FIG.Y1620-01A0) | 1001- |