Over run Clutch

Old is exactly right about the rolled pin. The only thing that I might add is that the pin needs to be the right length and needs to be driven into the PTO the right depth. The purpose of the pin is to hold the overrunning clutch onto the PTO shaft, otherwise, it would just slip off the PTO shaft.

The trick is that the inner section of the overrunning clutch has to turn independently of the outer section of the overrunning clutch. So, the pin has to be long enough to stick out of the PTO shaft so that it holds the inner part of the overrunning clutch onto the PTO shaft, but not so long that it interferes with the outer part of the overrunning clutch.

I hope that makes sense. I'd also recommend that you buy a few extra rolled pins when you can. They frequently shatter on the ends when you drive them into and out of the PTO shaft.

Good luck,

Tom in TN