Question about Polaris 2010 Sportsman 500 H.O

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Stalling out while riding

My atv stalled out on me twice while riding, first time going down a rough trail in low gear and moving very slowly. I gave it throttle when it seemed to be losing power, got no response, then gave it again and it stalled. I pushed it to a level area because I thought the decline might have had something to do with had happened once before the previous spring when I had gotten stuck and it did start when I had winched it to a level spot...but it wouldn't start this time. After an hour and a half of waiting 10 mins, trying to start, and then waiting again (thought it had possibly flooded?), I called for help and when I tried it again while waiting, it started right up like nothing had happened. Ran fine all the way home. Next ride I had just started going uphill in high gear and it stalled out the same way. This time I needed a tow home. I was finally able to start it with the choke pulled all the way out (had tried everything else I could think of so gave it a shot) and it started, but wouldn't stay running. I got it to start again and this time I gave it 1/8 throttle to keep it running and so I could push in the choke. I haven't had a problem starting it since and it runs fine now, but I don't trust it to go for a ride. The shop I usually take it to can't figure out what's wrong, telling me they've let it run, heat up, and even rode it around the yard with no problems. There is part of a Kolpin gas nozzle (end piece of nozzle) that dropped in the gas tank last summer, but it hasn't given me any problems until possibly now. The shop is aware of this, but I don't think they have investigated this because they didn't think it would cause a problem. Would it cause this type of problem? If not, any ideas what would cause this problem?

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Think u correct saying it flooding had same problem sticking float
now and again changed float no more problem or getting starved of fuel.

Posted on Jul 16, 2013

  • Michael Gould Jul 27, 2013

    Ended up being a melted and plugged carb vent hose. Replaced and now working fine. Thanks for the suggestion though, I made sure the float was checked out and it ended up working fine.



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