This is Chicago Pneumatic part number R005717 (also carried as 3310104339) throttle valve spring, stocked at Crowder Supply as CP-R005717. This is control gear it meters air to the breaker. A worn control gives creep, hard starting, or a tool that will not shut off cleanly.
You will find it on the diagram for the CP 1210 1210S 1210SVR Paving Breaker and CP 1260 1260S 1260SVR Paving Breaker, and on 7 other machines. Worth matching the reference number on the diagram against your own machine before you order the same part number can sit in more than one position.
Use the parts diagram hub to work through the rest of the assembly, or the CP tool catalog if you are pricing a replacement machine. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: R005717
- Also listed as: 3310104339
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-R005717
- Listed on breakdowns for: CP 1210 1210S 1210SVR Paving Breaker, CP 1260 1260S 1260SVR Paving Breaker, CP 1290 1290S 1290SVR Paving Breaker, CP 1290SPDR Spike Driver, CP 1210 S SVR Paving Breaker, CP 1230 1230S 1230SVR Paving Breaker, +3 more

