Aqua Meter Tach to Rude 90

[Vdub144]

Well, NAPA is closed for the day, so on to another 'project...'<br /><br />My sister's tri-hull now sports what appears to be a circa 1990 Rude 90HP. There was previously a Chrysler 85 that had 'sat too long' on the boat, and had seized up.<br /><br />The Chrysler had a tach made by Aqua Meter which is still mounted on the boat. The tach has two wires: grey and white I believe.<br /><br />When the marina installed the Rude and controls, they did not re-connect the tach. <br /><br />Would there likely have been a sending unit on that Chrysler (my sister still has it)? Or would the tach likely go to ground and a cylinder?<br /><br />If a sending unit is required, would anyone know a best source for such a part - I'd rather NOT buy a whole new tach if I can help it and a sending unit is cheap. <br /><br />Thanks again!<br />Dan

 

[rickdb1boat]

Re: Aqua Meter Tach to Rude 90

Chrysler/Force tachs will not work on an OMC outboard. They are set up for 20 pole operation. They are pretty exclusive. The OMC is a 12 pole. You need a Tach that will have a "6" setting on the back for that motor. Most Teleflex Tachs have this and are popular. You may want to check this site out for more info..<br /><br /> web page

 

[Vdub144]

Re: Aqua Meter Tach to Rude 90

This is helpful. Thanks. <br /><br />If this was hooked up, would it read roughly twice as high? (Since the tach only goes up to 6000, this would still be useless to me - but I'm curious. Or I have a low RPM little Johnson... Just kidding... )