| Index No. | Part No. | Description | No. Req'd |
| 1 | 113.522 | Body cylinder | 1 |
| 2 | 143.524 | Piston | 1 |
| 3 | 6152505260 | 5/8" hex. shankchisels/scrape | 1 |
| 4 | 320.515 | Cover assembly (B20) | 1 |
| 4 | 320.519 | Cover assembly (B20-00) | 1 |
| 4 | 320.520 | Cover assembly (B20-0) | 1 |
| 4 | 320.521 | Cover assembly (B20-1) | 1 |
| 5 | 321.574 | Throttle lever | 1 |
| 6 | 395.518 | Valve body assembly(5-7-13) | 1 |
| 7 | 399.745 | Valve stem set (17-18) | 1 |
| 8 | 570.537 | Inner tube | 1 |
| 9 | 570.538 | Handle tube | 1 |
| 10 | 570.539 | Grip | 1 |
| 11 | 607.518 | Locknut | 1 |
| 12 | 616.05 | Screw | 1 |
| 13 | 637.116 | Roll pin | 1 |
| 14 | 650.29 | Sealing washer | 1 |
| 15 | 658.242 | O-Ring | 1 |
| 16 | 658.243 | O-Ring | 1 |
| 17 | 658.239 | O-Ring | 1 |
| 18 | 681.578 | Valve spring | 1 |
| - | - | Nameplate | 1 |
