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June 4th, 2012,
Mercury 5.7L v8 with Alpha One Drive / How do I troubleshoot my tach?
I have 1997 Sea Ray 210 BR (open bow).
It has 5.7L v8 (210) HP engine.
I have the factory 14.25 x 21 degree pitch aluminum prop.
The tach shows 5500 RPMs with 3/4 throttle.
I am thinking about replacing the tach.
I had it tested by a mechanic and he says when he tapps it the tach gauge
goes up and down. SO it does not show correctly.
How do I replace it?
How much does a 6000 RPM tach cost?
June 4th, 2012,
Re: Mercury 5.7L v8 with Alpha One Drive / How do I troubleshoot my tach?
Hey rick. I moved this to our Electrical section. Tachs are sort of universal to all engines. Before I do anything I would check the switch on the back and make sure it is set for a V8. If I had to replace it I would try and find the same Tach so that it matched my pother gauges.
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