It is not original, but I have used nylon lock nuts for prop nuts on a number of motors. They never work loose and you can adjust the tension you want on the shear pin.
I was planning on using a castle nut.
I’ve done it before.
Using a nylock has never occurred to me.
I often use an O ring (rings) between the
gear case and the prop in an attempt to
slow the exit of the grease in these motors
without seals.
A nylock would be just the ticket for
adjusting the tension.
Thanks for the suggestion.
Tubs.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.
