New Mercury won't stay tilted up!

Discussion in 'Bubba's Outboards' started by rks1949, Jul 20, 2009.

  1. rks1949

    rks1949 New Member

    Messages:
    148
    State:
    Illinois
    I had my boat out this weekend,and the new motor (Mercury 50 hp 2 stroke) would trim itself all the way down,anytime it was over 2000rpm. The manual say's it will do this( what this feature is for is beyond me?),but it causes problems crossing swift shallows (2000 rpm isn't enough to go up stream). Is there a way to "overide,or dissconnect this" feature? If not the motor is going back to the dealers,and getting traded off. there are allot of areas in the river I run that have shallow riffles/sand bars,and this motor keeps lowering itself,and shoving the prop/lower unit into the bottom,this ain't gonna cuit it!:angry: Ron
     
  2. rks1949

    rks1949 New Member

    Messages:
    148
    State:
    Illinois
    Well,I found the "cure"!:embarassed: A 800.00 jack plate!:angry: Oh well,Ya can't take it with you. Ron
     

  3. Kelly G

    Kelly G New Member

    Messages:
    104
    State:
    South Carolina, Conway
    I have the same motor and mine doesnt do this, it is 2 years old now is this something they just started?
     
  4. jim

    jim New Member

    Messages:
    2,579
    State:
    Jacksonville NC
    I would absolutely go back to the dealer.Ihave a Mercury and have never heard of one doing this.At least go to the mercury website and contact them.If its new its under warranty so dont spend anything for a jackplate yet.This sounds like a malfunction to me but I dont have your owners manual to read.
     
  5. SkipEye

    SkipEye Well-Known Member

    Messages:
    7,525
    State:
    Winfield, MO
    Name:
    Darryl
    That doesn't sound right!!!! Why in the world would it trim itself down and stay there at high rpm? Thats when you need to trim it out to get the rpm in the power band.

    Sounds like something is wrong to me.

    I'd like to know the text you are reading word for word also.
     
  6. jim

    jim New Member

    Messages:
    2,579
    State:
    Jacksonville NC
    Just got through talking to Mercury.The engine trims itself down from TILT to the trim range above 2000rpm.It does that to make sure the water intakes are submerged.SO if you have the boat on the trailer with the motor TILTED up as we all do and then launch ,start the engine in the TILT position once it gets to 2000rpm it will automatically lower itself to the TRIM range,not all the way down Mercury tells me.So if you are running at 4000rpm you can just use your trim button as normal.Up,down etc.Hope this helps.I only intend to charge 400$ for this service which is half the jackplate cost.Jackplates are good but again you can only go so high before the intakes come out of the water.:smile2::big_smile:
     
  7. metalman

    metalman Well-Known Member

    Messages:
    3,456
    State:
    IN
    Name:
    Winston
    Ron,
    Try mixing a little Viagra with the fuel:smile2:...W
     
  8. rks1949

    rks1949 New Member

    Messages:
    148
    State:
    Illinois
    The trim range works ok,it's when you go into the tilt range,(higher up) for crossing shallows,then if any more than 2000 rpm is applied ( more throttle) it will lower itself to the bottom of it's range (all the way down,through the,trim range also,to the lowest setting). This would work ok,in a lake staying at 2000 rpm's or less,but in swift shallow water 1 1/2-2 FT. it takes more throttle to go upstream,against the current,then the problem starts. I called Mercury,and they said this is a "saftey feature"!:confused2: Then I asked if they could tell me how to over-ride it,since the rpm's control it. They informed me that they could,but wouldn't,due to "liability reasons"!:angry: I tried it several times at a lake,and as long as you didn't exceed the 2000 rpm limmit,it will stay in the tilt range (cavatation plate level with the water),but as soon as you go beyond 2000 rpm's,down she goes! It is even states that it does this in the manual, under "running in shallow water"! So the dealer suggested a jack plate to lift the motor up and still keep it in the trim range. The jack plate will give the motor around 6 inches of lift,so it should be ok. The dealer called around to diffrent Motor company's and they all said this was on their newer motors also,(kinda like a seat belt thing):sad2: The jack plate co. said this was a common thing on the newer motors,so it's making them money,and they are happy. They said that they are seeing alot of the plates installed on jon boats,running shallow rivers,and that it works extreemly well,so maybe I'll be happy with the performance? I just wasn't expecting to spend more money on a new boat so soon! The dealer said he wasn't aware of this feature on the motor,and is selling it to me at cost,(the jack plate) and installing it at no charge,so maybe it's not a bad deal,in the long run,as I could see the lower unit getting shoved down into the gravle/sandy shallows on the river I run in. The range of the trim wasn't enough for good clearance,so now I should be able to lift the motor vertically enough,with,or with out trimming up to get the clearance I need. Ron
     
    Last edited: Jul 23, 2009
  9. jim

    jim New Member

    Messages:
    2,579
    State:
    Jacksonville NC
    OK good to go if you are happy.Just rememmber the safety feature is to insure that your water pickups are in the water.You can raise them out of the water with the jackplate also.Always check and make sure you have that little stream of water coming out or you will burn the engine up in 30 seconds.
     
  10. rks1949

    rks1949 New Member

    Messages:
    148
    State:
    Illinois
    Yeah,Jim! The dealer is going to mark the jack plate so I can tell when I'm at the max height,and still able to get water to the engine. Ron