Re: **Need prop for 5hp Gamefisher**
Sears motors were built by a number of brands. Look for model number perhaps on the mounting bracket.
I'll guess Chrysler or Force. You might check Ebay some venders do have info on what fits what.
Force and Chrysler both came up with 9 spline pin drive In the prop store. The year was in the 80s
Of course Chrysler became Force in 85.I don't know if Chrysler had splines.