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  1. #1

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    need some help on a sl780

    hey guys,i bought a Polaris sl780 last year for 150 bucks,put 400 dollars worth of parts into it and got it running,i finally got to take it out last week and it did great.the only problem is if it sets for longer than a day i have to prime the carbs with gas to crank it up,but once i do that it dose fine all day long...any ideas?


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    Air leaks in the fuel system can cause that.

    Did you rebuild or replace the fuel selector valve?

    Are the fuel hoses new?

    Make sure every fuel hose connection and every seal in the fuel system is 100% air tight.

    The fuel feed from the tank is under suction from the fuel pump, so any air leaks can also allow bubbles into the fuel lines which can reduce fuel flow at the carburetors.

  3. #3
    Fink's Avatar
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    Are you turning off the fuel selector valve when letting it sit?

  4. #4

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    no i haven't done anything to it and i dont turn it off either.but ill go through it all and check everything.

  5. #5
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by Fink View Post
    Are you turning off the fuel selector valve when letting it sit?
    Quote Originally Posted by coreymacf View Post
    ... i dont turn it off either...
    A good habit to develop; Turn off the fuel selector when not using the machine.

    There are multiple reasons to do so.

  6. #6

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    thanks for the tip

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