I have a 2012 150 mercury 4 stroke and when I go fast my power trim halfway up .

  • Gilbert Silva
    Posts: 2
    #1632490

    can someone help me i can’t plan out all the way untill i can get it up a little more it will only go half way up but when i stop it will go all the way up and down no problem.This is my first time on here.

    Ralph Wiggum
    Maple Grove, MN
    Posts: 11764
    #1632491

    Are you saying that your tilt/trim will only travel all the way up when stopped or idling? That’s normal. At higher RPMs, you don’t need to trim it up that high. To get on plane, your motor should be trimmed all the way down, or at least most of the way down.

    Gilbert Silva
    Posts: 2
    #1632501

    thank you I think I know what I am doing wrong.I will try it tomorrow morning to see if it will work.

    basseyes
    Posts: 2515
    #1632508

    It is easy to forget stuff fishing, especially when stuff is new to us all.

    When I come to a stop, if I’m in deeper water I’ll trim the motor all the way back down before shutting the motor off. In shallow water I’ll leave it up where it was trimmed up to, too achieve the ride needed for the conditions of the waves, wind, etc of the day. Then on start up, trim it back down for optimal hole shot and getting the rig up and planed out quickly.

    Good luck with it and keep everyone posted if you got it figured out.

    Joel VandeKrol
    Ankeny, IA
    Posts: 460
    #1632568

    <div class=”d4p-bbt-quote-title”>Ralph Wiggum wrote:</div>
    Are you saying that your tilt/trim will only travel all the way up when stopped or idling? That’s normal. At higher RPMs, you don’t need to trim it up that high. To get on plane, your motor should be trimmed all the way down, or at least most of the way down.

    Interesting. I’ve never maxed it but my trim goes pretty high, even when running full throttle…maybe this is a safety thing on newer motors? Mines an ’07 Mercury.

    Also, maybe you can explain the plane and what you mean by “trim all the way down.” Again, maybe my boats an anomaly, but I trim mine up…roughly 1/4 -1/3 way up??? probably closer to a 1/4. I usually trim it up to where the prop can be heard out of the water then trim it down until the sound goes away…seems to work best with my make/model (Lowe F/S 165).

    Just curious is all…

    Next time you take your boat out, trim it all the way down and hammer on the throttle. Pay special attention to your RPMS when top speed has been reached. It will probably be 1000-1200RPM’s less than the rev limiter allows, usually around 6-6200 depending on the motor. After your boat has reached top speed, adjust ONLY the trim of the motor. Look at the difference in performance your boat is able to achieve by riding higher in the water with less drag.

    If the motor is mounted correctly the cavitation plate should be visable while reaching max RPM’s and speed.

    If it is throwing a rooster tail off theback of the boat any higher than the top of the outboard the trim is probably too high. At this point you’ll also notice the back end may start to break loose, or “chine walk”.

    Trim should be awlays adjusted according to conditions to maintain maximum safety and control of the boat.

    Ralph Wiggum
    Maple Grove, MN
    Posts: 11764
    #1632890

    Was just confused on trim all the way down to achieve plane.

    You don’t have to trim all the way down to take off, but trimming it down keeps the nose of the boat lower when you open up the throttle and will get you on plane quicker.

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