crocket81:
I have a 251 with the Massey two-stage clutch. In the 251/451 Manual, the clutch releases for the pto in the first few inches, then it picks up the clutch for the gears. The manual gives a picture with the adjustment for the 2nd stage. Did you get a manual with the tractor - even the operator's manual will be helpful.
Starkiller Hollow, Oklahoma