[C320-list] Engine panel questions

[Dan Kolean]

I had the errant tach issue.  I cleaned up the connections on the motor end and it works great.  Before that I tried working an adjustment screw, on the back of the tach, back and forth and also cleaned up the connections on the tach.  That did NOT seem to help.

Dan Kolean
Enrich.   1998.   #498


Sent from my iPad

> On Sep 8, 2020, at 2:24 PM, Scott Thompson <surprise at thompson87.com> wrote:
> 
> Two questions:
> 
> First, the audible alarm on my engine panel only works intermittently. When it works it is very loud, but it often does not sound when starting or stopping the engine when there is no oil pressure. The oil pressure light works fine so I know the sensor itself is fine. At one time in the past my audible alarm stopped working altogether and based on a recommendation on this list I found a replacement part. However I'm having trouble finding that info again, and am wondering whether something else might be to blame given the repeated problems. BTW, my recollection is that the original alarm was specified as a 24 volt part, while the replacement I put in was an almost identical unit rated for 12 volts.
> 
> Second, my tachometer is erratic sometimes. I have the Yanmar 3GM30F with magnetic pickup on the flywheel. Does anyone have suggestions for tracing the contacts, or identifying the most likely bad connection?
> 
> -- 
> Scott Thompson
> Surprise, #653
>