Ok i have been searching for a while on here but ran out of lunch time to continue. I bought a new used tach today and it has a few different settings on it. What setting is it for the 20 pole tachs? I have a 10 6 and 4 setting on it. It is a rather old tach and the guy swears it is for a 20 pole. If it isnt then i can take it back and get another. Just wanted to know where to set it at. If i was reading right it would be a 10 since it is half number of poles. However i also read it should be on 4 so i am confused it is on that 1985 85 hp force outboard motor. Thanks guys.
