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  1. #1

    Polaris 780 SLT overheating problem

    I just bought these great skis.

    They both recently overheated. The water exhaust box got so hot if any water touched it, it sizzled.

    The rubber hose connecting the exhaust pipe and the water box got so hot it burst. The inside of the hose was cooked.

    Any ideas on why this is happening?

    Help please.


  2. #2
    Connecticut CrazyA's Avatar
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    Quote Originally Posted by paradiseboy View Post
    I just bought these great skis.

    They both recently overheated. The water exhaust box got so hot if any water touched it, it sizzled.

    The rubber hose connecting the exhaust pipe and the water box got so hot it burst. The inside of the hose was cooked.

    Any ideas on why this is happening?

    Help please.
    The engines didn't overheat correct? Just the exhaust parts you describe? If so, refer to the attached diagram:

    Cooling water from the lake, pond, ocean... enters the ski from hose #6 and feeds the exhaust pipe through fitting #12. The exhaust pipe has an open path to feed the engine cooling water, but some of that cooling water exits through fitting #9. Fitting #9 sends water through hose #10 and feeds fitting #11. This entire "feed" from hose#6 to fitting #11, cools everything from your exhaust pipe outlet to your exhaust system outlet on the hull of the ski.

    Pull hose #10 off of fitting #9 and check the fitting. It's "screened" to catch debri and is probably plugged. You'll need to wrench the fitting out of the exhaust pipe as it's "screened" on the inside. While the hose is off, blow through it to make sure it's open from that point on. Something is plugged somewhere in that circuit to melt and/or destroy the parts your describing.
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  3. #3
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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