07-30-2007, 07:11 PM #1
Got my NEW genuine polaris tach off ebay, is it busted?
Well just got in the Polaris tachometer that I got off ebay. Was in original package, but had been taped back up looking as if it was opened briefly. Everything appears to be there, however upon closer look I notice the tach is stuck around 2k rpm. What's the deal with that. Are these things serviceable and perhaps I can open it up and reset the needle? Ugh, this sucks. Here's some pics.
Even my cat couldn't figure it out.
Old digital camera takes horrible pics, but you get the idea.
07-30-2007, 07:29 PM #2
Split the box, attach it and fire her up I'll bet the RPM's show correcty.
07-30-2007, 07:30 PM #3
I THINK on some of them at the rear was a rubber seal which could be removed and the needle adjusted.
But hook it up and see if it seems correct.
07-30-2007, 07:33 PM #4
Come to think of it, if you attach the power and ground it will probably drop to 0 RPM.
07-30-2007, 07:34 PM #5
07-30-2007, 09:33 PM #6
Touched power and ground, and tach smoothly went to zero just like ph2ocraft said. Disconnected it and the needle gently climbed again, which was interesting. Guess it's a wierd tach thing. But that's a relief, thanks again Al.
07-30-2007, 09:45 PM #7
What are the differences?
It seems it should be
Yellow for tach signal
Red for switched power
Black for ground
07-31-2007, 10:56 AM #8
It was measuring your heart beat
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