i have a 1989 winner bass boat with a 1973 85 johnson on it the boat came with a yamaha motor on it originally, and the time has come to get a new prop ( thanks to a rock in the water ) and the prop is not marked, so i need to see what my w.o.t rpm's are in order to select the proper propeller pitch. so i have a couple questions i guess, what are the recommended w.o.t rpm's for my motor? and does johnson and yamaha use different tach pulses and if so is there a way to change it so the my tach will work? or is there some sort of device to hook up temporarily to see what my w.o.t rpm's are on the lake?
signed
irritated in Ohio....LOL
signed
irritated in Ohio....LOL