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  1. #1

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    1100 stx di oil outputs not all equal

    I was reading the service manual for my 2000 1100 STX DIs and read the specs for the oil pump. What surprised me was that not all the outputs were the same. I knew that one of my skis has had an engine swap and was not too surprised to find two swapped. Hope no damage was done.


  2. #2
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    same on ultra 150's..it can bite the inexperienced right on the butt. If you caught it within an hour or two you'll be ok, assuming you had oil in the stator and pto areas prior....

  3. #3

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    It was a newly purchased ski, so I don't have any idea how long it has been wrong.

  4. #4
    steve45's Avatar
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    Quote Originally Posted by nmpeter View Post
    same on ultra 150's..it can bite the inexperienced right on the butt. If you caught it within an hour or two you'll be ok, assuming you had oil in the stator and pto areas prior....
    What is the extra oil output used for? It appears that it doesn't have a balance shaft...

  5. #5

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    Goes to the crankshaft by front cylinder.

  6. #6
    TexasZ's Avatar
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    Quote Originally Posted by steve45 View Post
    Quote Originally Posted by nmpeter View Post
    same on ultra 150's..it can bite the inexperienced right on the butt. If you caught it within an hour or two you'll be ok, assuming you had oil in the stator and pto areas prior....
    What is the extra oil output used for? It appears that it doesn't have a balance shaft...
    The first one goes to the front bearing. Just offhand, I was thinking crank bearing but I'm not certain about that cuz' the diagram in the service manual makes it look like it's going to the stator housing.

    The other three of course go to the cylinders via the intake manifold under the throttle body.

    Whats interesting is that it must function somewhat like the Ultra 150 / STX-R 1200 motor because of what I see written here...
    Output to #1 bearing... 2.23ml
    Output to #1 nozzle.....2.23ml
    output to #2 nozzle.....3.73 ml
    Output to #3 nozzle.....3.73ml

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