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  1. #1

    Default 90 hp force trim problems

    I am a first time boat owner. I have a 1990 bay liner capri with a 90 hp force motor. My tilt will go up but then starts going down on its own slowly buy not really slow. Wondering what I should do and what could be causing this. Do I need a repair kit? Model # of motor is 906x90c.

  2. #2
    Join Date
    May 2010
    Sebastian ,Fl

    Default Re: 90 hp force trim problems

    Are you or do you have a mechanic that will work on it?

    Your trim @ tilt unit is a 2 part system.
    Top part is an electric motor that drives a hydrolic pump in the base.
    The slow drift down.
    That's usually the seals in the hydrolic pump.
    This is a link to a repair thread on another site.

    There isn't a seal kit for that unit.
    It's usually find the seals and fix it yourself??
    Or buy a new pump.
    You operate in fresh water or salt?
    If it's been in salt water it can be real difficult to repair and a replacement would be the best bet.

    The pumps are all over the net, the bad is most are made in China and are CRAP.

    I rebuild them if they can be removed and sent to me and they aren't too rough.
    88 Bayliner with 2002 225 HP Mercury EFI

    Buy American made Cars and Trucks!!!Towing insurance for a boat,a GREAT thing.
    ​Tools to make my life easier: Battery tester, die grinder, temp.gun, compression tester, DVA meter.

    In Scenic , Beautiful San Sebastian by the sea Florida

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