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  1. #1

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    1993 750 1994 650 cooling water hook up in garage

    Is it ok to run these skis with a garden hose attached to the inlet of the cooling water and a hose on the bilge area for the exit of the cooling water so I can get the water out of my garage?


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    How long do you need to run the engine?

    If for under 30 seconds (from cold), no water is required.

    If the drive shaft is in place, then the maximum run time is only two minutes, since the drive shaft and impeller stator seals can overheat with the hull out of the water.

    There are two water exits from the engine. One is the hose running from the thermostat area to the hull tunnel exit fitting. The other is from water injected into the exhaust system. That water comes out the exhaust.

  3. #3

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    ok, so I take it that if I hook up a hose to the inlet, water will get to the drive shaft and impeller stator seals, right? The only thing I have to worry about is the water on my garage floor.

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Why do you need to run the engine?

    If you really need to run it for a long time, take the jet pump off, and remove the drive shaft. Now you can run it for as long as you need.

    Just connect the garden hose to the main cooling water IN hose (that would normally be fed from the jet pump).

    Reverse flush cooling is not recommended for long run times, as the cylinders don't get properly cooling.

  5. #5

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    ok thanks. I am not sure if the skis will even run. I just want to make sure that I don't do any damage. If they do run I was hoping to make sure the cylinders were all firing, and maybe do some tuning on the carbs.

  6. #6
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    If they fire, take em to the lake

  7. #7
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by Frozen View Post
    ok thanks. I am not sure if the skis will even run. I just want to make sure that I don't do any damage.

    If they do run I was hoping to make sure the cylinders were all firing, and maybe do some tuning on the carbs.
    Other than setting the carbs to spec (assuming they have been rebuilt and cleaned internally), you really cannot tune carbs without the hull being in the water. The impeller puts a load on the engine only when it is in the lake.

    Polaris Fuji (blue) engine

    Here is one way to confirm that each cylinder is at least firing, and is roughly the same as the other two.


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