Hi I have a 55E Minn Kota i believe to be from the early 80's. It's held on with a cotter pin not a nut. It was my fathers and I inherited it when he passed. It needs a prop part no. 206110 if anyone can help it would be appreciated
If you can't locate the right prop, call MK and ask what they recommend as a replacement. They were very helpful on the occasions I had questions about their motors..
I've found a similar style prop on Ebay in the past for my 70's vintage model 15.. I'd start by searching there. Maybe set up a search with some keywords and let the software work for you.