Hi my 2005 Polaris sportsman 500 ho does not want to turn over. it used to and idled fine but once the throttle was applied it did not work it just choked and died, i cleaned the air filter as the box was filled with oil and dirt washed the air filter did an oil change and cleaned the crab out twice I tried to start it this morning but it just backed fired and started to smoke. any idea why it is not working?

SOURCE: polaris 500 x2 starts fine, but when you apply

I have a 2003 sportsman 500 ho thats doing the same thing. It starts fine everytime and idles fine but when you push the throttle it stalls and sounds like its loading up with fuel. Also its fouling the plugs when it does this b/c I can take them out and they are jet black (dry). I checked the spark and the spark appears to be good. So now I'm in the process of taking the carb apart to see if there is anything wrong with it and to clean it. If this doesn't fix it then I don't know. I really don't want to replace the coil b/c its like 150 bucks.

SOURCE: Service manual for a 2006 500 Polaris Sportsman HO

I have a 2006 Sportstman 500HO ATV, EFI. Sometimes it will run 100% correct, other times it will start, idle fine but then when giving it throttle will will start to surge almost like it's hitting a rev limited. Sometimes it will backfire and stall. I already replaced fuel filter, flushed the fuel lines and gave it fresh gas and installed a new spark plug, but no good. I also checked the throttle switch and it's not making contact to stall it. I download the service manaul and tested each sensor and they tested fine which is probablt why I get no check engine light.
This ATV is mainly used to plow snow in my driveway, no salt. It's used around my property but very lightly. It's still as clean as it was when I bought it and it doesn't have but about 40 hours on it.
Polaris 500 HO EFI 4x4 ATV: Vin# 4XAMH50A56B707664 purchased 6-8-2006

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SOURCE: polaris 2005 sportsman 500 H.O. service manual

Downloaded this last week....its the factory service manual ($3.99)

http://www.tradebit.com/filedetail.php/6901881-download-now-polaris-sportsman-500-2005-05

brandon lilly

• 18 Answers
• Posted on Feb 11, 2014

SOURCE: How to turn up idle on 2013 polaris sportsman 500 ho

follow ur throttle cable down to cars there should be a plastic screw close to cable to adjust idea but with polaris that screw can be hard to find with all the plasticc they put in way but if u can see carbs easy enough u will see the idle screw

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