I have an 2001 XC 500 that sputters and backfires at low rpm. At high rpm it runs great. We have cleaned carbs, checked reed valves and found nothing. We are thinking stator or electric problem with throttle kill switch or changing coil wires or CDI and I even read possibly a problem with the clutch? What would be our best bet to try next?
Before you do any of that check exhaust for restriction.
SOURCE: polaris rmk 500 backfires when it gets hot then
Ok this sounds like a similar problem that I have had with a 500xc engine...This engine has been running fine for the last 5 yrs until a few weeks ago when it became a pig to start and when it did only run on one cylinder eventually running on both and when it gets to a certain temp would cut out and then not start again for 5mins, changed everything we could think of, checked compression, barrels fine, carbs clean new cdi, coil, plugs, leads, fuel pump and pipes, then someone came accross with checking the resistance on the temp sensor on the top of the head which were different values to the the book and on another identical engine, I borrowed a spare sensor and although still a pig to start it was an improvement when running, need to buy a new sensor to rule it out
, can anyone else shine some light on this?
SOURCE: i have a polaris 1999 500 xc and i just had the
check choke cable to make sure you have some free play in cable when choke is off.
SOURCE: I have a 1999 polaris
look at your drive clutch if the rollers are bad it will engage to early and bog down the engine
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