Re: Mercury 35hp prop
Is there a prop on the motor now?There should be numbers near the base off the blades or under the prop nut.
Unfortunately there doesn't seem to be much info about the 35. Couldn't find the gear ratio.
The size of the prop would depend on the application.If it was on a boat intended to use a motor around that size
I'm guessing a 12" pitch as a starting point. You will need a tach and a gps to get it right.
Answer the questions in the stickys at the top of the prop forum and we should be able to help.