The Pintle is part of the clutch assembly and threads through the Ferrule. This is NOT the Bucking Bar which goes into the 10 tooth sprocket to help engage and disengage the clutch.
The Pintle is an internal clutch component inside the crank case.
Part #21 on the Clutch Diagram
Part Number (See Parts Manual): 3-21 (F5-8)
Good product Working good.