Anyone have any idea? Surprised it doesn't say in the manual but I can't find it. I guess I could use an adjustable but dont want to damage the bolt and need to change the prop.
Guessing but probably accurate: 1 1/16", 1 1/8 will work. I don't have that yearmodel, had a '89 115 and currently a 2002 90 and all used the same size prop shaft/nut.
