Tach floating
Yesterday I was starting my motor in the driveway like I do before I head out to make sure all is good and I started it up and the although the engine was idling, for about 15 seconds the tach was floating from 3500 to 5000.. Engine was at a dead idle....like a switch the tach dropped straight down to 800 and was dead solid from there on out....
Should I do some preemptive repairs replacement or just let it ride and see if it happens again? Sign of a bad tachometer or something on the motor side?
1986 Yamaha with original Yamaha tach I am assuming.
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1986 V-20
1986 Yamaha 150 HP
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