SBT Jetski Engines, Parts & Accessories

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  1. #1
    Joined
    Jul 2005
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    NJ
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    56

    Default help me with oil pump prob. and possible switch to premix..

    I got my ski up and running yesterday. Sbt motor. I thought I had blead the oil line to the pump, no air. So I started and planned on idleing it and manually moving the oil pump level to fill the little feeder oil lines. And I got nothing. Did get another air buble in the big line. So I tried to bleed it again. Nothing. It doesn't bleed. I get a few drops very slowly but the line keeps an air bubble. Even tried taking the line off and letting oil flow and putting it back on. So I believe I have a dead pump.

    I'm thinking about doing the oil block off and running pre-mix. But my gas tank is already full of gas and has the break in oil in it. So I'm guessing I can just put the oil in the gas tank?? Or do I have to drain it?

  2. #2
    Joined
    Sep 2004
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    INDIANA
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    152

    Default Re: help me with oil pump prob. and possible switch to premix..

    Did you put the plastic shaft in ?

  3. #3
    Joined
    Sep 2005
    From
    Dallas
    Posts
    39

    Default Re: help me with oil pump prob. and possible switch to premix..

    Quote Originally Posted by crudeau
    So I'm guessing I can just put the oil in the gas tank?? Or do I have to drain it?
    You should drain the oil out of the oil tank and mix it at the correct oil/gas ratio. DO NOT JUST POUR THE OIL IN THE TANK.

  4. #4
    Joined
    May 2005
    From
    Los Angeles(Hollywood)
    Posts
    425

    Default Re: help me with oil pump prob. and possible switch to premix..

    exactly how long were u running the engine w/o any oil in the engine? idling while trying to move that lever? you might have done severe damage to the engine if no oil was in that engine.

  5. #5
    Joined
    Sep 2004
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    INDIANA
    Posts
    152

    Default Re: help me with oil pump prob. and possible switch to premix..

    TX21 you mean drain the gas out of the gas tank NOT oil out of the oil tank. IF you decide to go pre-mix drain the fuel in the fuel lines also. and it wouldnt hurt to fog the engine when you first get it started.

  6. #6
    Joined
    Sep 2005
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    Dallas
    Posts
    39

    Default Re: help me with oil pump prob. and possible switch to premix..

    Quote Originally Posted by julrich
    TX21 you mean drain the gas out of the gas tank NOT oil out of the oil tank. IF you decide to go pre-mix drain the fuel in the fuel lines also. and it wouldnt hurt to fog the engine when you first get it started.
    You should drain both to get it right.

  7. #7
    Joined
    Nov 2003
    From
    Glendora, CA
    Posts
    6,846

    Default Re: help me with oil pump prob. and possible switch to premix..

    Leave some oil in the oil tank to feed the rotary valve gear.

    It is best to premix in known quanities, like 5 gals at a time. But, if you know how much fuel is in your tank, you can pour the oil into the tank and shake the ski for a minute or two to mix it. Believe me, trailering it to the lake will get it mixed up just fine.
    Bill O'Neal <br>
    WCM
    <a href="http://www.watercraftmagic.com"

  8. #8
    Joined
    Jul 2005
    From
    NJ
    Posts
    56

    Default Re: help me with oil pump prob. and possible switch to premix..

    it ran for about 20-30 seconds. I had my hand on the level. I read the manual on how to bleed it. ANd there is the sbt break in oil in the gas tank. If I did severe damage in 30 seconds then the engine had issues to begin with. I started it, saw no oil flowing and shut it down. I flushed out the fuel lines and the gas tank while I had the engine out. So all the lines at least had the break-in oil in them.

    I oreded the block off kit from Sbt. I'm going to just leave the oil tank full. THat way it's in there and I don't have to worry about it for a while. couple pounds doesn't bother me. How do I go about changing the oil that in the engine?

    What the easiest way to drain the gas tank? Since it's at the bottom of the hull, I'm thinking put two five gallon tanks on the ground, and siphon it out. have to get some extra long tubing from somewhere to hook to the fuel lines.

    what's the ratio for it?

  9. #9
    Joined
    Nov 2003
    From
    Glendora, CA
    Posts
    6,846

    Default Re: help me with oil pump prob. and possible switch to premix..

    Siphon out the fuel. The premix ratio is 40:1

    No need to change oil in the motor.
    Bill O'Neal <br>
    WCM
    <a href="http://www.watercraftmagic.com"

  10. #10
    Joined
    Jul 2005
    From
    NJ
    Posts
    56

    Default Re: help me with oil pump prob. and possible switch to premix..

    so what happens to the oil in the bottom of the engine? I am thinking that it VERY slowly gets mixed in with the fuel. Because of the rotary valve. Or will I never again have to add oil?

    Just looking to understand for my knowledge.

    Should my first tank of oil be mixed 40:1 since I already added the sbt break in oil as if I were injected. I know the bottle had two sets of directions (on the break-in oil).

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