280 da tachs

Chrisvr6

Member
Sep 6, 2016
192
Chicago
Boat Info
2002 280da
Engines
Twin 5.0mpi
Buying a 2002 sundancer 280 and neither gauge was working at first startup then one started too and the hours on one read like 800 and 370 on other. Had the mechanic there scan the engines and they both read 370 and 380. What should i have the seller do before i buy it? Get new gauges? But then the hours will be at zero??
 
Write the existing hours on the cases of the new tachs with a sharpie. Put the old ones in the new boxes and put them on a high shelf in the back. Log the change in a logbook. Keep the old ones if you ever sell the boat.
 
I'd be interested in the why. I was under the impression that unlike old analog meters where all you meeded was power, the newer hour meters had to have the engine running in order to log hours. What gremlin caused the difference. Could that be a down stream problem?
 

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