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bgagne
06-04-2003, 10:37 AM
What is the best way to verify the readings on a tach? I think that mine is reading at least a few 100 rpm low. If it is reading low, how do you correct it?

blackhawk
06-04-2003, 10:49 AM
There should be an adjustment screw on the backside of the gauge. I borrowed a portable tach that hooked to a spark plug wire and found my VDO was 300 rpm low.