Double post go to other !
2017 Polaris Sportsman 850 SP blown pinion cover
My 2017 Polaris Sportsman 850 SP only has 800kms and the front pinion cover is blown right out of the diff.. running stock tires and everything else is stock. I see on the website the these 850's now have a whole front replacement differential, instead of running diff #1333570 the new diff part is now #1333965 but I don't see a recall. Machine is still under warranty will this be covered?
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i have the same problem on my 2017 polaris 850 xp. im so done with buying a polaris , they had a recall in 2016 for the same problem but did not fix the problem in 2017.i owned a suzuki 700 for 10 years and never broke anything.My 2017 Polaris Sportsman 850 SP only has 800kms and the front pinion cover is blown right out of the diff.. running stock tires and everything else is stock. I see on the website the these 850's now have a whole front replacement differential, instead of running diff #1333570 the new diff part is now #1333965 but I don't see a recall. Machine is still under warranty will this be covered?
Pinion covers were updated in 2018 to steel. The older aluminum ones are known issues and its one of the first mods that is recommended to avoid costly repairs. A new billet aluminum one only cost $120, too bad you didn't know about that before you blew yours. Hopefully you didn't cause any damage to the front diff and only need to buy a new pinion cover.i have the same problem on my 2017 polaris 850 xp. im so done with buying a polaris , they had a recall in 2016 for the same problem but did not fix the problem in 2017.i owned a suzuki 700 for 10 years and never broke anything.
BTW, your Suzuki only had 48.5 HP compared to 78 HP on your Sportsman. 30 extra ponies is a lot of extra stress on all components. Not excusable, but understandable.i have the same problem on my 2017 polaris 850 xp. im so done with buying a polaris , they had a recall in 2016 for the same problem but did not fix the problem in 2017.i owned a suzuki 700 for 10 years and never broke anything.
The hole front differential is shot. I stopped immediately and it was to late. Now it's a pile of junk.Pinion covers were updated in 2018 to steel. The older aluminum ones are known issues and its one of the first mods that is recommended to avoid costly repairs. A new billet aluminum one only cost $120, too bad you didn't know about that before you blew yours. Hopefully you didn't cause any damage to the front diff and only need to buy a new pinion cover.
The hole front differential is shot. I stopped immediately and it was to late. Now it's a pile of junk.
View attachment 149080 View attachment 149080
What were you doing when it broke? In snow? In mud? On dry pavement? Rear spinning in 2 wheel drive? Was it in 4 wheel drive?i have the same problem on my 2017 polaris 850 xp. im so done with buying a polaris , they had a recall in 2016 for the same problem but did not fix the problem in 2017.i owned a suzuki 700 for 10 years and never broke anything.
Please help others avoid what causes it to explode.
Man that sucks. Front diffs aren’t cheap. Start looking for someone parting one out. Someone in here might have a spare that they are willing to sell or may know where to get one.
Your 850 would sh!t all over that suzuki 700!!
I'd take a Polaris 850 over KQ 700 everyday of the week and twice on Sunday!!!
With that said I feel for you but you have to know your machine and it's short comings!!!
IMO Suzuki is a pile of sh!t!!!!!!!!!!!!!!! Most of my buddies HAD kings and they always had issues. Everything from massive electrical problems to broken frames!!! We ride hard the kings were rode hard and they broke like they all break!!! Ironically out of like 7-8 kings only one guy is a repeat buyer. He only bought another one because he crashed and broke his back down at HMT and didn't want to ride that machine anymore. He bought a new king and immediately started having electrical problems within the first 300 miles. He was able to chase down the issue and got his money back on an Griz 700 he had a deposit on.
I'd take the extra maintenance on a Polaris or canned ham over some anemic suzuki all day long!!!!!!!!!
I'd take a Polaris 850 over KQ 700 everyday of the week and twice on Sunday!!!
With that said I feel for you but you have to know your machine and it's short comings!!!
IMO Suzuki is a pile of sh!t!!!!!!!!!!!!!!! Most of my buddies HAD kings and they always had issues. Everything from massive electrical problems to broken frames!!! We ride hard the kings were rode hard and they broke like they all break!!! Ironically out of like 7-8 kings only one guy is a repeat buyer. He only bought another one because he crashed and broke his back down at HMT and didn't want to ride that machine anymore. He bought a new king and immediately started having electrical problems within the first 300 miles. He was able to chase down the issue and got his money back on an Griz 700 he had a deposit on.
I'd take the extra maintenance on a Polaris or canned ham over some anemic suzuki all day long!!!!!!!!!
If it helps these same models have the same Front diff https://parts.polarisind.com/OtherAssemblies.asp?partid=1333570
OR
Here is one out of a 900 Ranger and guys have used it saying its stronger??? Polaris Ace Ranger RZR ETX 500 570 900 1000 Differential Front Diff 1333750
OR
Here is one out of a 900 Ranger and guys have used it saying its stronger??? Polaris Ace Ranger RZR ETX 500 570 900 1000 Differential Front Diff 1333750
Yeah there’s a bit more work to get the RZR diff in there but it can be done. Unless you’re running 32”+ mud tires, I don’t see any benefit in going with the RZR front end. A billet pinion cover will do just fine.
Also watch F/B for someone parting one out, there out there... I got very lucky that way.....
LOL... What are you trying to say bp? That a KQ ain't got enough power to break anything? 😁Your 850 would sh!t all over that suzuki 700!!
I'd take a Polaris 850 over KQ 700 everyday of the week and twice on Sunday!!!
With that said I feel for you but you have to know your machine and it's short comings!!!
IMO Suzuki is a pile of sh!t!!!!!!!!!!!!!!! Most of my buddies HAD kings and they always had issues. Everything from massive electrical problems to broken frames!!! We ride hard the kings were rode hard and they broke like they all break!!! Ironically out of like 7-8 kings only one guy is a repeat buyer. He only bought another one because he crashed and broke his back down at HMT and didn't want to ride that machine anymore. He bought a new king and immediately started having electrical problems within the first 300 miles. He was able to chase down the issue and got his money back on an Griz 700 he had a deposit on.
I'd take the extra maintenance on a Polaris or canned ham over some anemic suzuki all day long!!!!!!!!!
I've seen many times on here and on various Facebook groups that the newer model 850/1000's have steel pinion plates right from the factory. I have a 2021 850 and it certainly doesn't look like steel. I'll check it with a magnet when I remember, but it sure looks like cast aluminum to me.
Also, from all the reading I have done, I don't think they break just because the pinion plate is weak, because I've heard of a lot of them breaking at very low speeds or when not even being subjected to any kind of load. I think it sounds more like the front wheel drive is engaging on its own when it shouldn't be, for whatever reason. I'm guessing this could be due to neglected fluid, but I'm just guessing. The front diff is a fairly complicated unit and I'm sure it benefits from nice clean fluid. Just my current opinion...
Also, from all the reading I have done, I don't think they break just because the pinion plate is weak, because I've heard of a lot of them breaking at very low speeds or when not even being subjected to any kind of load. I think it sounds more like the front wheel drive is engaging on its own when it shouldn't be, for whatever reason. I'm guessing this could be due to neglected fluid, but I'm just guessing. The front diff is a fairly complicated unit and I'm sure it benefits from nice clean fluid. Just my current opinion...
Your new one is cast steel. Its been verified. Your's would be no different. The old aluminum ones do break because they are made of poor cast aluminum. The billet aluminum upgrades don't break subjected to the same riding conditions.I've seen many times on here and on various Facebook groups that the newer model 850/1000's have steel pinion plates right from the factory. I have a 2021 850 and it certainly doesn't look like steel. I'll check it with a magnet when I remember, but it sure looks like cast aluminum to me.
Also, from all the reading I have done, I don't think they break just because the pinion plate is weak, because I've heard of a lot of them breaking at very low speeds or when not even being subjected to any kind of load. I think it sounds more like the front wheel drive is engaging on its own when it shouldn't be, for whatever reason. I'm guessing this could be due to neglected fluid, but I'm just guessing. The front diff is a fairly complicated unit and I'm sure it benefits from nice clean fluid. Just my current opinion...
It was in two wheel dr just left the driveway in snow the rear wheels spun not excessive for 20 ft and bang front diff pinion plate broke apart. I'm 58 and don't drive to fast. And hardly use the 4x4 unless I go through some mud puddles. I don't think I could have avoided this problem. Polaris needs to beef up the front pinion plate. I have searched the web and found a bunch of other people with different polaris machines having same problem
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