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Thread: Outboard Creeping Down

  1. #1

    Default Outboard Creeping Down

    When my port Yamaha F150 is resting on the hydraulic trim rams, it gradually creeps downward until it is fully trimmed downward. I notice this in the driveway, but not when out fishing, etc. There are no hydraulic leaks anywhere that I can see and the fluid level in the reservoir never changes. Is this normal? Should I be concerned? The starboard engine always stays in position. Thanks!
    "Miss Mary"
    Kingfisher 2725, twin Yamaha 150's

  2. #2
    Supporting Member Hoyt-Hunter's Avatar
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    Mar 2008
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    Mat-Su Valley
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    Default

    Low hydraulic fluid or bad seal.


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  3. #3
    Member DRIFTER_016's Avatar
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    Oct 2007
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    Yellowknife, NWT
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    Default

    Not normal.
    You have an internal leaking seal.
    You won't lose any fluid as it stays in the system but it leaks from one side to the other.

  4. #4

    Default

    Thank you guys. As I suspected, but wasn't completely sure. Love this forum!
    "Miss Mary"
    Kingfisher 2725, twin Yamaha 150's

  5. #5
    Member
    Join Date
    Dec 2008
    Location
    kenai
    Posts
    175

    Default

    ya its the check valve in the trim

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