2002 Polaris Sportsman 500 Can’t get get it to run more than 10 miles It idles change carburetor new spark plug

Hi there,

Have you check the valves and the valve gaps?? Sometimes but not always having the wrong valve gaps can cause backfires. Have you also tried tweaking the carburetor to try and improve the idle??

first try with air breather open then with air filter off,i had one that filter looked good but wouldnt let air thru

Does the cooling fan ever run when the engine is hot? If not, you may have a problem with the fan thermostat.

For the record, spray carburetor cleaner does no good if it's sprayed on the outside of the carburetor with the engine running. That's not what it's for.

sounds like the coil is weak or the electronic spark box is goin fuel filter been changed ?right gap on the Plugs? need more imfo on it to do more thks

a professional carb cleaning, new or CLEAN air filter and NEW spark plug!

Listen I have a 2009 EFI Polaris sportsman 500 it starts up goes fine down the road but sometimes it takes a fit an starts to bog out when it starts to do that all I do is shut the key off an back on real quick and it takes off again I'm really confused on what is making it do that because I changed the gas an air filter plus put a new spark plug in it also a new battery can anyone tell me what I could do to try an fix this problem it's got to be something easy because when it does that all I have to do is shut the key off an back on than it straightens up weird I know lol but please help me with some suggestions thanks

something is overheating, remove one sparkplug at a time and check for spark, be careful not to burn your self. Try 2 new plugs good luck

All most positive it is in your carb take the bowl off it as you take it off there is a small tube that hangs down that all most reaches the bottom of the bowl need to take a small wire and push through it it is blocked .symptoms backfiring no idle coughing and sputtering if it does start