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Old 22-07-2018, 13:19   #1
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Tachometer not working

Started ehgine today tac does not respond. Pulled panel checked and cleaned all connections at panel . Also connections in harnes en route. Also removed connection at alternator and cleaned. Still no go.
Could the alternator sending unit be bad? . Engine Yanmar 4jh3e.
Thank you
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Old 22-07-2018, 13:36   #2
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Location: Grand Manan,N.B.,Canada N44.40 W66.50
Boat: Mascot 28 pilothouse motorsailer 28ft
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Re: Tachometer not working

This may help Len

Yanmar rev counter stopped showing revs; sensor or tacho problem? [Archive] - Yachting and Boating World Forums
My personal experience & humble opinions-feel free to ignore both
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