06 polaris 500 sporstsman efi
 

My son flipped his 5oo. all the oil drained out added new oil and change air filter. it starts and smokes and will not idle. Help!!

Oil would have drained out the crank case/oil tank vent into the air box, possibly throttle body.Plus upper cylinder area above piston plus exhaust may have oil residue.I'd pull the air box first,clean it if oily and also spray the throttle body with contact cleaner.It may take a little driving time for any oily residue to be burned away and for it to run and idle properly.Plus throttle adjustment may be out of whack. Must have only 1/8" slack at the thumb lever or the etc contacts can touch and the machine will die.

Old Polaris tech you are awesome. followed your advice and now the quad runs great. Thank you!!!!!!!!

I've seen this happen more times than I wanted to.. :) Glad it's running ok now and no one was hurt.