Mercruiser Trim wont go up. ?

We went to get our boat out after a few years and the trim wont go up, it goes down perfectly fine and goes up to a little over half way and then just stops. The gauge seems to be a little off as well... anyone have ideas of what it would be? Wanted to take it out tomorrow:/

3 Answers

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  • CB
    Lv 7
    2 months ago

    I am with anon on this - clean the UP relay terminals until shiney and try again. Test the relay or just replace as not expensive. There are a couple other reasons and the video below should be a big help in understanding those other possibilities. 

    https://www.youtube.com/watch?v=r2cX3hnPn5w

    Youtube thumbnail

    Just went through this with my 5.0 Sea Ray, intermittently the up would would quit  - trim and trailer mode. Finally just crawled in next to the engine and replaced the up relay and all has been well.

  • 2 months ago

    You know you have to press both the out and up buttons at the same time to make the outdrive go up past the trim limit, right? If you're doing this, and the outdrive still will only trim up, and not fully tilt up, your trim limit switch is faulty.

  • Anonymous
    2 months ago

    Check hydraulic fluid level.  Replace solenoids.  Clean connections at solenoids.  Check hydraulic pump.

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