Speaking of old stuff................

I'm excited. The tach is the main thing.........it triggers magnetically off a plug wire so it will work on most anything, even a lawn mower. A tach is basically how you determine if an outboard it putting out rated power.......if it has the correct prop. You basically have a "water dyno"

Also this weekend I bought a HUGE Evinrude service binder with just that kind of info in