I have a sportsman 400 polaris. it starts and idles and reves fine without airbox. if i put the airbox on it splatters. if i take it off its fine. brand new parkplug fitted as well as airfilter, battery, (cdi) super power kit. carberator is clean and airscrew is set at 2 1/2. what can the problem be?
SOURCE: 2005 Polaris 700 sportsman 4x4 gets warm, looses power?
My Sportsman runs bad when heated up, but if you add fuel it runs fine again. I had a pick up that had an internal fuel pump like our Sportsman's and it did the exact same thing. It turned out being the fuel pump was worn out due to a plugged fuel filter. Forcing the pump to fail prematurely. I found I had bad fuel in my Sportsman and am going to replace the filter and the fuel pump. I also checked my plugs, MAF sensor, and Air filter, they were fine.
SOURCE: 2007 Polaris Sportsman 500 won't start. New
1999 polaris 500 sportsman, changed battery and now front lights will not come on. Suggestions?
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
SOURCE: My 1999 Polaris 335 sportsman
you have down all the electrics ( so have spark at plug ) has to be something with the carby does the spark plug have fuel on it when you remove after trying to start if not fuel problems, does bike have T.P.S (throttle positioning sensor) some on carby, some on thumb throttle etc might be causing problems.
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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