hi<br /><br />My tacho meter on my boat is busted. It is on 3000 rpm, it still works when the engine starts, but it moves from 3000, instead of 0. It happened, when one day the battery leads of the boat shorted. Can i fix it? It seems impossible to open. The engine it runs off is a 1976 johnson 55. so i assume the tacho is 1976. It is an OMC brand tacho.<br />Thanks
