2011 Polaris Sportsman 850 XP EPS- This video shows the noise and tells all the things I did prier to actually finding the problem. Video 2 shows how to fix it. The drive belt was Bad. Had Hot spots.
. When I got it it had this terrible clunking noise. I lifted the rear wheels and found a few issues. The upper A arm was sloppy because the bolts were not torqued properly. I replaced the bushings on that right side, replaced the hub bearing and ended up replacing that right axle too.. Money pits. I still had a issue. It really feels like its in the drive train.. Transmission, rear differential maybe even to the front gear box or prop shaft just not sure at this point.. I know that I can take off in low gear and it pretty much does not do it.. Only in High which means its under a larger load. Thought maybe the belt could be part of the issue cause previous owner liked to do burn outs in his driveway so thought maybe the belt had some glazing.. So I have ordered a belt Any suggestions? Also a note: If your having issues with oil in your air box you need to update your breather system to the ones that came in the 2012 models.. Polaris has a kit to convert it over. see Vid 2 to see what the cause was and how to fix.

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