I have a Yanmar
in my Beneteau
First 31.7. The tachometer went crazy, showing first full RPM
and after the next start zero RPMs. Also digital hour meter started blinking.
The tachometer is a VDO made unit, in a Yanmar
I first thought it must be a wiring
issue, or alternator
issue but then proved both assumptions were wrong. Finally I tried to change tachometer settings and that solved
the problem: now I get some near correct readings out of the tachometer and hour meter also works.
Now the problem is how to figure out correct pulses/round settings without any meter to show the RPM
Does anyone know how many pulses per revolution the standard Yanmar alternator
Or even better, what is the correct setting for this yanmar tachometer?
I don't have a clue how the tachometer lost
its settings. Does anyone have similar problems?