| Index No. | Part No. | Description | No. Req'd |
| 1 | 113.522 | Body cylinder | 1 |
| 2 | 143.524 | Piston | 1 |
| 3 | 615 250526 0 | 5/8" hex tool retainer | 1 |
| 4 | 250.549 | Threaded adapter | 1 |
| 5 | 320.524 | Cover assembly (B20L) | 1 |
| 5 | 320.525 | Cover assembly (B20L-1) | 1 |
| 6 | 321.574 | Throttle lever | 1 |
| 7 | 395.518 | Valve body assembly(6-8-9) | 1 |
| 8 | 399.745 | Valve stem set (13-14) | 1 |
| 9 | 637.116 | Roll pin | 1 |
| 10 | 658.242 | O-Ring | 1 |
| 11 | 658.243 | O-Ring | 1 |
| 12 | 616.05 | Screw | 1 |
| 13 | 658.239 | O-Ring | 1 |
| 14 | 681.578 | Valve spring | 1 |
| - | - | Nameplate | 1 |
