New to forum, got a few questions on a 2017 850 SP - Page 2 - Polaris ATV Forum
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post #11 of 15 (permalink) Old 04-22-2017, 10:10 PM
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I hadn't thought about the EPS I thought the same thing having never had it. Now when I drive my honda its like sitting on a rock with bad handling and suspension.
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post #12 of 15 (permalink) Old 04-24-2017, 08:32 AM
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Need Help!!!! Purchased a 2016 Sportsman 850 SP. Polaris says that the machine has normal backlash!!! It sounds terrible, I ride the atv hard, jumps, wheelies, just having fun. The warranty ran out while I had it in the shop. Whatever it is it's not normal, every time you accelerate or try to stand the nose up it grinds, no power loss. Is it slop in the driveshaft, or something to do with pinion gear?? ANY HELP WOULD BE GREAT.! Thanks
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post #13 of 15 (permalink) Old 04-24-2017, 10:22 AM
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From what i have read diff cover upgrade required only if running bigger than stock tires although there is at least 1 failure with stock tires.

I'm on fence for frame braces myself. I ride hard and fast but not reckless. I guess is fairly cheap piece opf mind

2017 Xp 1000 Sportsman LE Matte Cooper
2008 843cc Yamaha Grizzly
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post #14 of 15 (permalink) Old 04-24-2017, 11:28 AM
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In my experience most times when a U joint has gone bad it presents as a clunk, the driveline slack I've experienced sounds very similar to a bad universal but I've checked them all and are good. Honestly if what you hear is grinding like metal on metal that is not normal. Is your 2016 sportsman used or new? Have you done break in service if new? If used have you checked your front diff fluid? I would start there and if your quad is used maybe consider a fluid change and check your drain plug for metal shavings while empty to see if your having any visual signs of metal on metal damage to the pinion gear. If you drive deep mud allot your regular fluid change interval on both differential will be significantly less.. I would check both to see if contaminated and consider fluid change on the problematic front that will be the cheapest way to start diagnosing imo.
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post #15 of 15 (permalink) Old 04-30-2017, 07:36 PM
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I purchased it brand new. It was the transmission that failed I knew that it wasn't normal. The dealership really had the nerve to say that it was making a different noise!!!!! No dumbass it got worse! I drained the rear end and put a new belt, which didn't fix it. But whatever, it's being fixed under warranty, Thanks for the feedback. 850sp is definitely a beast! Only regret is that I didn't buy the 1000. I pretty sure it failed by jumping a terrace a few months back. Broke a tooth or something. I want know until I get home. Thanks again.
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