Tach stopped working on my 1GM

[Joe Myerson]

Hi all,
Like Dick Kobayashi (see post below), i have an original-equipment i GM, which is professionally maintained. I maintained it myself for many years, but squeezing into the so-called engine room gets harder as I grow older.

I had a delightful light-air sail on Buzzards Bay yesterday afternoon, but my tach doesn't seem to be working at all.

When I open the throttle up, it might reach 5,000 rpm, even though I know by the sound and my SOG that I'm running much faster than that.

This raises two questions:

FIRST: Is it safe to run the engine without the tach, relying on the noise and SOG from my chartplotter?

SECOND: Is this a simple repair, or should I wait until haul-out and have the yard fix it?

Thanks,

--Joe

[Joe CD MS 300]

Joe, maybe the sending unit at the engine or a bad connection either at the engine or gauge panel?

Joe

[Keith]

Hi Joe,

first check with analog gage is always to give it a good tap with your fingers while it is running. Mine sometimes sticks ar the beginning of the year.

Keith

PS I assume that you meant 500 RPMs not 5,000

[Joe Myerson]

I assume that you meant 500 RPMs not 5,000

Whoops! That's right, of course.