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  1. #1
    Carzan's Avatar
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    Does a hard freeze pose an issue for yamaha wave runners?

    Basically what the title says. Asking for someone up north who just got a ski and is expecting a freeze and wants to know what to do. I have no idea as we don't get hard freezes her but once every 10-15 years.


  2. #2
    Click avatar for tech links/info K447's Avatar
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    Broadly speaking the Yamaha cooling system is self draining. Details may vary with older models and engines, I do not know them all. The owners manual should specify what is needed before ‘winter storage’, aka winterization.

    I would want to tilt/raise the front of the trailer as high as possible to help the engine cooling system and related drain out the back.

    Start the engine, let it idle for a few seconds, then blip the throttle firmly several times. This will blow most of the excess trapped water out of the exhaust waterbox (muffler). A little water inside the waterbox is generally not a problem even if it freezes.

    Check inside the hull for bilge water. Small amounts are not a concern. If there is lots of water inside it should be allowed to drain out, or sop it up with a big sponge.

  3. #3
    Dave in DE's Avatar
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    Yup, K447 hit the nail on the head. I wash and clean the inside real good in fall use a small wet/dry vac to get all the water out. And I take my battery out put it in small plastic tote inside in a corner somewhere and periodicly charge it during winter. Never an issue.
    Last edited by Dave in DE; 05-01-2019 at 05:49 AM.

  4. #4
    Myself's Avatar
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    I've had to fix many different freeze cracks through the years but never on a Yamaha. They are very good at self draining.

  5. #5
    Carzan's Avatar
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    Thanks for the responses guys!

  6. #6

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    The only thing I would add is to spray some anti-corrosion lube around the engine.

  7. #7

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    The 2019 FX SVHO OWNERS manual and the SERVICE manual are both silent regarding engine cooling system. I guess I don't have any use for my homemade Sea-Doo winterization funnel, hose or small and large hose pitchers. I guess that's one of reasons I went Yamaha.

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