Tachometer settings on 4-cycle engines
The easy answer to your questions is. It dosent matter what engine/prop/fuel/plug ect...ect..... To get the most out of that
4-cycle lean it to max rpm on the tach. Then richen it till it loses about 400rpm. This should be a good setting if you are in your recomended prop range. Be sure to post how it works.
Later, daveo