| Item | Part No. | Part Name | Qty | Serial No. |
| 21W-70-00201 | BOOM ASS'Y,2ND | 1655- | ||
| 21W-70-00200 | BOOM ASS'Y,2ND | 1001-1064 | ||
| 1 | \6\ | BOOM | 1001- | |
| 2 | 21W-70-11950 | BUSHING | 1065- | |
| 2 | \0\21W-70-11140 | BUSHING | 1001-1064 | |
| 3 | 07020-00675 | FITTING,GREASE | 1001- | |
| 4 | 07145-00100 | SEAL,DUST | 1001- | |
| 5 | 21W-70-11170 | PIN | 1001- | |
| 6 | 21W-70-11280 | SPACER, 0.5MM | 1001- | |
| 6 | 21W-70-11270 | SPACER, 1.0MM | 1001- | |
| 6 | 21W-70-11260 | SPACER, 2.0MM | 1001- | |
| 7 | 21W-70-11310 | PLATE | 1001- | |
| 8 | 01010-51230 | BOLT | 1001- | |
| 9 | 01643-31232 | WASHER | 1001- | |
| 10 | 21W-70-11191 | PIN | 1001- | |
| 11 | 203-70-24150 | SPACER, 1.0MM | 1001- | |
| 11 | 203-70-24160 | SPACER, 2.0MM | 1001- | |
| 12 | 203-70-24160 | SPACER, 2.0MM | 1001- | |
| 13 | 21W-70-11380 | PLATE | 1001- | |
| 14 | 21W-70-11910 | PLATE | 1001- | |
| 15 | 01010-51225 | BOLT | 1001- | |
| 16 | 01643-31232 | WASHER | 1001- | |
| 17 | 21W-70-11310 | PLATE | 1001- | |
| 18 | 01010-51230 | BOLT | 1001- | |
| 19 | 01643-31232 | WASHER | 1001- | |
| 19 | 21W-70-00400 | LINK ASS'Y | 1001- | |
| 20 | \6\ | LINK | 1001- | |
| 21 | 07144-10404 | BUSHING | 1001- | |
| 22 | 07020-00675 | FITTING,GREASE | 1001- | |
| 23 | 07145-00040 | SEAL,DUST | 1001- | |
| 24 | 21W-70-11211 | PIN | 1001- | |
| 25 | 21W-70-11290 | SPACER, 1.0MM | 1001- | |
| 26 | 21W-70-11310 | PLATE | 1001- | |
| 27 | 01010-51230 | BOLT | 1001- | |
| 28 | 01602-21236 | WASHER,SPRING | 1001- | |
| 29 | 21W-70-11180 | PIN | 1001- | |
| 30 | 21W-70-11280 | SPACER, 0.5MM | 1001- | |
| 30 | 21W-70-11270 | SPACER, 1.0MM | 1001- | |
| 30 | 21W-70-11260 | SPACER, 2.0MM | 1001- | |
| 31 | 21W-70-11310 | PLATE | 1001- | |
| 32 | 01010-51230 | BOLT | 1001- | |
| 33 | 01643-31232 | WASHER | 1001- |