Calibrating T&T Gauge

[Drydocked]

I just installed a new Trim-and-Tilt gauge on my boat. I forgot the BRP part number, but it starts with 17xxx, and is the one that fits in a 2.125" cutout in the dash.

It replaces an old one that became non-functioning. It is hooked up to an 2005 E-TEC 90HP.

It seems to work, except that the needle doesn't go past the halfway mark when I tilt it up. It looks to be calibrated correctly for the bottom stop - when I tilt down, the engine hits the bottom stops when the needle on the gauge hits the last mark. However, when I tilt the motor up, the needle rises to almost the halfway point on the gauge, then stops, while the engine continues to tilt up. When I lower the motor, the needle does not move until the engine is tilted about 2/3 full down, then it smoothly moves until the engine hits the bottom stops.

So it looks like a calibration issue to me. I tried cycling the motor to full up, then full down a cuple of times, hoping that it would self-adjust, but no luck.

Is there a separate calibration adjustment on the motor? I don't see any adjustment screws on the gauge itself.

TIA

 

[JUSTINTIME]

Re: Calibrating T&T Gauge

i think u just twist that one, I'm not to sure
post some pics, it should help
when all else fails read the instructions again8)

 

[Drydocked]

Re: Calibrating T&T Gauge

i think u just twist that one, I'm not to sure
post some pics, it should help
when all else fails read the instructions again8)

Yeah...RTFM! But there was just a single page in the package, showing how to hook it up, nothing else.

As I recall, on the engine I had on this hull before (which was a 1993 90HP Johnson), there was some sort of adjustment screw on the hydraulic rams. I think you adjusted the tilt so the needle was in mid-gauge, then adjusted the hydraulics so that the anti-ventilation plate on the engine was parallel to the bottom of the hull. Or maybe I have that reversed...