Author Topic: Tachometer  (Read 254 times)

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Offline Bigtgrove

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  • Boat Make/Model/Year: American skier deco 1987
« on: July 12, 2020, 12:09:35 PM »
Over winter my tachometer quit. What is the best way to troubleshoot. I did replace alternator.

Offline backfoot100

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  • Boat Make/Model/Year: 86 Barefoot Skier
Re: Tachometer
« Reply #1 on: July 13, 2020, 06:17:05 AM »
There should be a gray signal lead on the back of the tach going to the coil. Don't remember for sure which side but you can verify continuity and connection.
There is also a switch on the back of the tach to set it for 4, 6 or 8 cylinders. That switch can get sticky or dirty over time. Cycle the switch several times to try and clean the contacts inside. I've seen that fix them albeit for a short term.
These tachs don't last forever and they do go bad. I've had to replace mine and I know of numerous others who have had to replace them.
When people run down to the lake to see what is making that noise, you've succeeded.