Topic: yanmar repower

The yanmar 1gm10 comes with a gear reduction ratio of 2.21 2.62 or 3.22. What should be used in our boats?

Re: yanmar repower

Mine has a 2.62:1 ratio and works great on a 3 blade prop

Re: yanmar repower

What prop size and pitch works?

Re: yanmar repower

Mine is also 2.62 with a 11X10 3 blade, seems to work well.

Re: yanmar repower

My prop is a 11x12 3 blade