Home › Forum › Ask A Member › Airguide tach for ’79 Evinrude 35 question › Re: Airguide tach for ’79 Evinrude 35 question
March 7, 2018 at 2:31 pm
#72109
If it has a charging system, the tach setting would be 5 pulses (10 pole). It works by counting the AC pulses from the alternator. Most modern tachs work this way.
Your Airguide seems odd in it’s coverage. I guess it counts the breaker points openings. Those old style breaker points tachs are getting hard to find. Might be better to sell it and buy a new one.