Join Date: Sep 2006
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Re: Need an engine part that apparently doesnt exist anymore
I had an old mercury engine with the same nut, I also lost it, and had to buy replacements, I bought a spare, but gave the whole thing away a few years ago. The castle nut doesn't work. How it was designed is s flat washer with ears that are bent into slots in the cone kept it from spinning. As you found out if the ears aren't bent well, (check them every time you go out), the prop spins off.
If no one has the old parts, a machine shop can fabricate one. Or you could have them modify the shaft for a newer and more secure prop attachment.
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