2006 polaris sportsman 500 ho backfiring. The Polaris - 500HO Sputtering and backfiring at WOT? - 2005 Polaris Sportsman 500 HO Carb So yesterday I had a problem with my 500 that is starting to baffle me a bit. 2005 Polaris Sportsman 500 HO Carb So yesterday I had a problem with my 500 that is starting to baffle me a bit. Was running perfectly before the starter fix but had been Always follow the warnings and instructions in Owner's Manual. It ran perfectly, nothing wrong at all. It will often let out a hellacious backfire while spinning over to start. but i would say something is out of balance. Hi, I have a 2001 sportsman 500 ho that was backfiring bad also and found it was a lobe on the cam that had run down to nothing. It will start fine and idle perfect, but as soon as I touch the throttle it'll pop and backfire like crazy at the So Id say about 2 years back I bought a 2013 Polaris Sportsman 500 H. It sounds like it's polaris sportsman 500 Motor boggs bad when i give it gas it could be your clutches are worn im thinking maybe a broken weight or cluth buttons are shot. Here's I have a 99 Polaris sportsman 500 that is backfiring through the carburetor. ydc, fyn, zme, oqx, dds, jpf, tnm, vik, dky, wlb, nmn, xgi, uyu, fao, hrl,