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Outboard Creeping Down

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  • 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
    Low hydraulic fluid or bad seal.


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    If you think you're free, there's no escape possible.

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    • #3
      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.
      sigpic
      www.arcticangler.ca
      https://www.youtube.com/watch?v=Gy_7mPiqoqw&t=11s

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      • #4
        Thank you guys. As I suspected, but wasn't completely sure. Love this forum!
        "Miss Mary"
        Kingfisher 2725, twin Yamaha 150's

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        • #5
          ya its the check valve in the trim

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