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  1. #1
    Petty Officer 2nd Class
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    Jun 2006
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    Baton Rouge, LA
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    Default Mercruiser trim is all the way up, but won't go down.

    I have a 1979 Mercruiser 228. After running all day today I came back to wash down. The trim went all the way up, but now won't go down. The "automatic stop" has not worked on the trim for years, and the indicator hardly works as well. When I hit the trim up buttons, I can hear the motor run, but nothing when I try to trim down. Please let me know where I should start to investigate.

    Thanks in advance.

  2. #2
    Petty Officer 3rd Class
    Join Date
    Jun 2009
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    95

    Default Re: Mercruiser trim is all the way up, but won't go down.

    Quote Originally Posted by MelLandry View Post
    I have a 1979 Mercruiser 228. After running all day today I came back to wash down. The trim went all the way up, but now won't go down. The "automatic stop" has not worked on the trim for years, and the indicator hardly works as well. When I hit the trim up buttons, I can hear the motor run, but nothing when I try to trim down. Please let me know where I should start to investigate.

    Thanks in advance.
    Here try this and see if it helps solve the problem. May be the down solenoid switch.


    http://www.boatfix.com/merc/Techbk/97/97hs6.pdf

  3. #3

    Default Re: Mercruiser trim is all the way up, but won't go down.

    Start by cleaning all of the electrical connections.
    1987 Wellcraft 23' NovaXL
    Mercruiser 260/Alpha I

  4. #4
    Rear Admiral Fishermark's Avatar
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    Oct 2003
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    Pt Charlotte, Florida
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    4,603

    Default Re: Mercruiser trim is all the way up, but won't go down.

    Quote Originally Posted by MelLandry View Post
    When I hit the trim up buttons, I can hear the motor run, but nothing when I try to trim down.
    The fact that you can hear the motor running would rule out an electrical issue. It may just be stuck. Try standing on it while someone trims it down.

  5. #5
    Petty Officer 2nd Class
    Join Date
    May 2008
    Posts
    148

    Default Re: Mercruiser trim is all the way up, but won't go down.

    try checking the fluid level , that was what was wrong with mine , i had to stand on it to get it down and while it was down i filed it up and now its fine .

  6. #6
    Petty Officer 2nd Class
    Join Date
    Apr 2006
    Location
    Reading Pa.
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    131

    Default Re: Mercruiser trim is all the way up, but won't go down.

    I had a bad ground to pump. Would go up but not down, good luck!

  7. #7
    Rear Admiral Howard Sterndrive's Avatar
    Join Date
    Nov 2008
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    Kawarthas
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    4,215

    Default Re: Mercruiser trim is all the way up, but won't go down.

    Go up, and then quickly down. Often works for me.
    Baba-buoy.

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