Need Tach Help

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Paul Aubrecht

I went out last weekend and found out my Tach has stopped working.I have a Yanmar manual but it doesnt show anything about the Tach.I need some help with troubleshooting it so I have some questions: 1.Where does the Tach terminate at the Yanmar side.? 2.Is it powered mechanically or eletrically or both? 3.Any troubleshooting tips? Thanks everyone
 
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Brian

Depends

Some are attached to the alternator, some are attached to the fly wheel. Mine is attached to the flywheel on the aft part of the engine. I thought it was attached to the alternator since I had replaced the alternator and all of the sudden it quit working. I called Yanamr and found out it was the flywheel and traced the problem to the sending wire coming unplugged from the tachometer itself. Doh! Works great now ;) Brian Crew Rest
 
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Paul Aubrecht

Thanks for the Link

It will make it easier to troubleshoot now.
 
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