Calibrating Power Trim Gauge

[Mike Robinson]

I recently replaced the sending unit for the power trim gauge on my '94 Johnson 150 (didn't work when I purchased boat) The gauge works now but the needle doesn't bottom out when the motor does. I tried pushing down the lever all the way on the sending unit with my fingers and the gauge still doesn't bottom out.<br /><br />Is there any way to calibrate the gauge?<br /><br />Thanks in advance.

 

[Mike Robinson]

Re: Calibrating Power Trim Gauge

^

 

[Walker]

Re: Calibrating Power Trim Gauge

Isn't there a slotted screw hole in the sending unit that allows it to be rotated just a little bit? Doesn't take much

 

[Joe Reeves]

Re: Calibrating Power Trim Gauge

The gauge.... Grounding the sensor "S" terminal should peg the gauge needle up. If so, the gauge is okay.<br /><br />Moving the sender lever with your finger to its limits should peg the gauge. What you've said indicates a faulty sender unit.

 

[Mike Robinson]

Re: Calibrating Power Trim Gauge

I was wondering if that was the case (faulty sending unit. I guess I should check the sending unit with my ohmmeter as laid out in the manual. In hind sight I should have checked it BEFORE installing it!

 

[javsam]

Re: Calibrating Power Trim Gauge

yes you should have checked with ohm meter. what is the most probable cause is a broken wire from the motor being raised and lowered. the break will be next to the wire harness and motor.<br />javsam