Re: Carter Pin Question 9.9 hp johnson
A propshaft without a cotter pin hole? Sounds like the cotter pin is still in the hole, broke off and flush with the shafts diameter.
If by some weird chance of misfortune you have actually come across a propshaft w/o a cotter pin hole, drill one where it belongs as there is no way the prop nut is going to stay there without one.
Know what happens when one puts the engine into reverse without a prop nut?