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  1. #1
    TyCast's Avatar
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    Question Best way to winterize a SL 650?

    So winter is fast approaching. Just fixed my ski, after lots of work, and i wanna protect it from the cold temps of winter that in Oregon, still gets to freezing temps.

    My current plan is run the engine out of water to pump out the water from the cooling system untill its mostly dry. Let cool. Then take off the spark plugs, spraying fogging oil then let run for a minute, then kill engine. Then store?

    I was also thinking of pouring some antifreeze into the top of the head cooling part (one on top of each cylinder). Good idea? terrible idea?


  2. #2
    Click avatar for tech links/info K447's Avatar
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    The 1992 and 1993 Fuji engines have a water jacket around the crankcase. There is a process required to fully drain and winterize these engines. The 1994 and later models are self draining, but not your engine.

    There is no separate water pump for the engine cooling system. The only water pump in the entire watercraft is the main jet pump. When running in the water the jet pump feeds the cooling system. On the trailer the jet pump does not pump anything.

  3. #3
    TyCast's Avatar
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    hmmmm....

    So how exactly do u get the water out of the water jacket/crankcase? Is there a simple method?

  4. #4
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by TyCast View Post
    hmmmm....

    So how exactly do u get the water out of the water jacket/crankcase? Is there a simple method?
    I think the procedure has been posted on GH years ago, probably in multiple threads.

    Or you can look here.

  5. #5

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    My 1996 780SLX has a water rail with a flush fitting. I've purchased an adapter at a plumbing store so I can fit a garden hose on it. For antifreeze, I've just taken an old section of garden hose and attached a huge funnel. I run the motor and pour antifreeze in. You must be running the motor when you hook up the hose or antifreeze. I'm not sure of the reasons why, but there are several posts about not running water through this way without the engine running.

  6. #6
    Myself's Avatar
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    On my '92 I take loose a plug on the lower crankcase section where several cooling lines all tie together to drain all water.

  7. #7
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by froeman View Post
    My 1996 780SLX has a water rail with a flush fitting...
    The 1992 and 1993 crankcase are different, they hold water, which must be drained out.

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