sbritt23
Well-known member
I have a 93 evinrude 40 hp and i saw a knock off tiny tach for like 10 bucks and thought what the heck I'll try it out it says I need to set up the firing revolution for it i guess. And I'm reading the instructions on how to do it. Does anyone have any idea what the spark plug firing revolution is for this motor. Either it's 1,2, or 3 thanks in advance for the help