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Guage crackable?


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Was out on the lake, looked down and tach was reading over 6k - impossible.  When I shut it off needle was at around 1500.  Needle seems to have spun.  Anyone know if the tach on a 2012 can be opened up?

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The left over Medallion style gauges I have messed with, after replacement, seemed to be held together with epoxy and not very easy to open up without damaging them.  The gauges use a stepper motor connected to a circuit board to move the indicator needle, kind of like modern automotive gauges do, and I haven't had much luck moving the indicator and making them work again.  A repair of the circuit board or replacing the stepper motor may be possible, but I really don't have much experience doing that with the Medallion gauges.

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The pn should be 3747016.2 for a replacement gauge, but I would check the connection or possibly employ a light to medium percussive adjustment first.

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Tank the trim ring off and use a thin razor saw to separate the lens from the gauge body so you can diddle the needle.  Changing the stepper motor will require a cut around the case body to get into the guts.

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Be very careful when pulling the needle off if you need to.  The plastic will be brittle, so gently pry from under the hub.

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