CES wrote:
I have a prop that came off of a Mercury 40hp. Someone had put it on my Yamaha 40 and called it good. I ended up putting a SS prop on mine, it is a 13 spline 11 1/4 X 15 degree pitch. Now my 13" Whaler scoots like a rocket accross the lake. The Merc prop was only about 9 1/2 diameter which is much smaller than what I have on it now.