Power trim indicator

[Sloopinn]

Went out on my rib today and noticed the electronic dial which shows shows the engine trim is not working. It also shows engine revs, engine temp gear box temp. All this is working fine just no trim gauge.
Anyone have any ideas as to what the cause of this could be?
It's a 150hp Yamaha 2008 model. Electronic gauges. Regards Matt

[spartacus]

Check for the obvious things like oxidised bullet connectors on the wiring. Not sure with the Yamaha, but on a Tohatsu trim there's a sensor located on the outboard saddle. Raise the engine and check this is working. Should be spring loaded.

[Sloopinn]

Yeah thanks for that will have a look tomorrow and see if my Yamaha has similar set up. Maybe it's seized up over the winter as today was the first time I used it this season.

[phantom 19]

Yamaha trim indicators often seize up over the winter, you probably just need to work it back and forwards a number of times until it returns to its sprung loaded up position by itself. The arm that screws to the tilt tube and operates the sender was plastic and often split over time meaning that it just span round instead of operating the sender, later engines from around 2008 had metal arms instead and these are available as a revision from Yamaha if so.

[Sloopinn]

Thanks for your replys. Had a look today think I found the bits you was on about but like a fool left the keys at home so could trim the engine up an down but couldn't switch ignition on to see if gauge was now working. But much hAppier now as I'm sure what you told is the problem,found the arm it was fairly stiff.

[boristhebold]

I have a yamaha 200HP 2004, might be a similar set-up, check the tilt sensor is operating as in lift engine on tilt and move the sensor arm to check if working, if it is also check the small bracket the arm pushes against as these can break or can move, also check wiring.

I had the sensor go wrong once and the bracket break once, different times, both parts replaced at different times, ive also had the bracket work loose which needed re adjustment and also after some one did some work on my engine they must have tilted it up so high the sensor arm went the other side of the bracket and hence I had to re adjust the bracket yet again and it is a pain.

[Sloopinn]

Thanks everyone for your help your advice was spot. As you said trim arm on spring had partially sized so greased an a bit of gentle permeation an problem solved. Thanks again regards Matt