Ordering by number: this is 410221300, the Tamco/Toku throttle valve stem guide. It governs how air reaches the working end of the rivet buster. Wear on the sealing land is the usual cause of a throttle that leaks with the trigger released.
It is called out in the parts diagram for the RB 70D Rivet Buster and RB 91HPD Rivet Buster, and on 5 other machines. Pull up the diagram and confirm the reference number for your serial before ordering.
Everything else on that machine is one page away on the parts diagram library; complete tools are on the Tamco/Toku lineup. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 410221300
- Manufacturer: Tamco/Toku
- Crowder SKU: TK-410221300
- Listed on breakdowns for: RB 70D Rivet Buster, RB 91HPD Rivet Buster, TCD 20 Clay Digger, TCD 30 Clay Digger, TRC 30 Trench Digger, RB 90D 91D Rivet Buster, +1 more

