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2012 Polaris Sportsman 850 EPS

7848 Views 20 Replies 8 Participants Last post by  Lollygagger77
Good Morning,
I purchased a used 2012 Polaris Sportsman 850 EPS roughly 5 months ago that had 600 miles on the machine. There was only one oil change done on the ATV since the original owner had it and I can tell it is starting to run a little rough as I have put on another 200 miles on it since I have owned it. I am looking to change the oil and have a question on oil filters.

I live in Minnesota, is there a local place like Fleet Farm/Auto Zone/Walmart that would sell the correct oil filter? If not, where would be the best place to order the filter from online?

Also, my EPS light came on last week and the EPS stopped working completely, has anyone else had this happen? I was going to look at the power steering fluid to make sure that is filled.

I am a first ATV owner, any constructive suggestions with care and maintenance on this model is really appreciated!

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Hey Jeremy welcome to the club. To answer your questions in order: purchasing oils and filters from the big box stores you mentioned I know a lot of guys use Rotella or Mobil One 0w-40. As for a filter idk the cross reference for it so hopefully some XP guys chime in. Personally I prefer Polaris brand oils and filters. I generally make my online purchases from https://www.rockymountainatvmc.com. Now for your EPS light that is most likely the sign of a weak battery. I would suggest putting it on a float charger and see if that remedies the situation. These machines have power steering units that are powered by electricity not hydraulics like an automobile, so no fluid needed. As for any additional things to do on the wheeler I would say proper maintenance is critical and that would entail greasing, oil changes (differentials, transmission, and engine), and air filter. I change my motor oil and drive-line fluids every 50hrs. I grease the machine every 3-4 rides ie days of riding. Air filter 2-3 times a year depending on how dry it is and how dusty the rides are. There are also a ton of mods to do but that would require more info from you. Good luck, that 850 is a beast of a machine especially for a first timer.
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Personally I would up grade to a quality AGM battery. I use Odyssey batteries as an up grade in all my equipment that requires a battery.
That clicking is the fuel system priming for the next start up, pressurizing if you will.
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