2017 Polaris Sportsman 850 SP blown pinion cover

jake.spitzig · 2017-12-12

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?

FPD218

· #9 · Mar 12, 2021

Yep, its caterstrophic when it fails....

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PURE GENIUS - we need to get him a job in the engineering dept. at Polaris. (latebird)
FPD218, you should be on the Polaris design/build consult team. You have some good info you're passing on. (plumberwl5)
5X ATV OF THE MONTH WINNER. ***** OF ALL THE PATHS IN LIFE YOU TAKE, MAKE SURE A FEW OF THEM ARE ON DIRT!
2019 Sportsman 850 SP Premium, Removed all Warning Decals, 3500# Polaris Winch W/Synthetic Rope, Winch Stopper Cable Line Saver, Garmin GPS176C, Ram Mount, Polaris Rear View Mirrors, 4" Front Rack Extender, ATV-GURU.COM Front and Rear Bumpers, 2" Receiver in Front Bumper, Kenda K587 HTR Bear Claws 26X9X14 & 26X11X14, Rear LED work lights/strobes, Polaris Lock & Ride Rear Storage Box, Ultimate Series Windshield Fairing, Mid & Low Height Windshield, Center LED Brake/Tail Light, HighLifter Springs, Garage Products Bushings, added Left Rear brake caliper. EBC Brake Pads.

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FPD218

· #10 · Mar 12, 2021

motorbiker40 said:
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.

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?

Please help others avoid what causes it to explode.

PURE GENIUS - we need to get him a job in the engineering dept. at Polaris. (latebird)
FPD218, you should be on the Polaris design/build consult team. You have some good info you're passing on. (plumberwl5)
5X ATV OF THE MONTH WINNER. ***** OF ALL THE PATHS IN LIFE YOU TAKE, MAKE SURE A FEW OF THEM ARE ON DIRT!
2019 Sportsman 850 SP Premium, Removed all Warning Decals, 3500# Polaris Winch W/Synthetic Rope, Winch Stopper Cable Line Saver, Garmin GPS176C, Ram Mount, Polaris Rear View Mirrors, 4" Front Rack Extender, ATV-GURU.COM Front and Rear Bumpers, 2" Receiver in Front Bumper, Kenda K587 HTR Bear Claws 26X9X14 & 26X11X14, Rear LED work lights/strobes, Polaris Lock & Ride Rear Storage Box, Ultimate Series Windshield Fairing, Mid & Low Height Windshield, Center LED Brake/Tail Light, HighLifter Springs, Garage Products Bushings, added Left Rear brake caliper. EBC Brake Pads.

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FPD218

· #13 · Mar 12, 2021

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

PURE GENIUS - we need to get him a job in the engineering dept. at Polaris. (latebird)
FPD218, you should be on the Polaris design/build consult team. You have some good info you're passing on. (plumberwl5)
5X ATV OF THE MONTH WINNER. ***** OF ALL THE PATHS IN LIFE YOU TAKE, MAKE SURE A FEW OF THEM ARE ON DIRT!
2019 Sportsman 850 SP Premium, Removed all Warning Decals, 3500# Polaris Winch W/Synthetic Rope, Winch Stopper Cable Line Saver, Garmin GPS176C, Ram Mount, Polaris Rear View Mirrors, 4" Front Rack Extender, ATV-GURU.COM Front and Rear Bumpers, 2" Receiver in Front Bumper, Kenda K587 HTR Bear Claws 26X9X14 & 26X11X14, Rear LED work lights/strobes, Polaris Lock & Ride Rear Storage Box, Ultimate Series Windshield Fairing, Mid & Low Height Windshield, Center LED Brake/Tail Light, HighLifter Springs, Garage Products Bushings, added Left Rear brake caliper. EBC Brake Pads.

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FPD218

· #15 · Mar 12, 2021

Also watch F/B for someone parting one out, there out there... I got very lucky that way.....

PURE GENIUS - we need to get him a job in the engineering dept. at Polaris. (latebird)
FPD218, you should be on the Polaris design/build consult team. You have some good info you're passing on. (plumberwl5)
5X ATV OF THE MONTH WINNER. ***** OF ALL THE PATHS IN LIFE YOU TAKE, MAKE SURE A FEW OF THEM ARE ON DIRT!
2019 Sportsman 850 SP Premium, Removed all Warning Decals, 3500# Polaris Winch W/Synthetic Rope, Winch Stopper Cable Line Saver, Garmin GPS176C, Ram Mount, Polaris Rear View Mirrors, 4" Front Rack Extender, ATV-GURU.COM Front and Rear Bumpers, 2" Receiver in Front Bumper, Kenda K587 HTR Bear Claws 26X9X14 & 26X11X14, Rear LED work lights/strobes, Polaris Lock & Ride Rear Storage Box, Ultimate Series Windshield Fairing, Mid & Low Height Windshield, Center LED Brake/Tail Light, HighLifter Springs, Garage Products Bushings, added Left Rear brake caliper. EBC Brake Pads.

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FPD218

· #17 · Mar 12, 2021

....................

Exactly

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PURE GENIUS - we need to get him a job in the engineering dept. at Polaris. (latebird)
FPD218, you should be on the Polaris design/build consult team. You have some good info you're passing on. (plumberwl5)
5X ATV OF THE MONTH WINNER. ***** OF ALL THE PATHS IN LIFE YOU TAKE, MAKE SURE A FEW OF THEM ARE ON DIRT!
2019 Sportsman 850 SP Premium, Removed all Warning Decals, 3500# Polaris Winch W/Synthetic Rope, Winch Stopper Cable Line Saver, Garmin GPS176C, Ram Mount, Polaris Rear View Mirrors, 4" Front Rack Extender, ATV-GURU.COM Front and Rear Bumpers, 2" Receiver in Front Bumper, Kenda K587 HTR Bear Claws 26X9X14 & 26X11X14, Rear LED work lights/strobes, Polaris Lock & Ride Rear Storage Box, Ultimate Series Windshield Fairing, Mid & Low Height Windshield, Center LED Brake/Tail Light, HighLifter Springs, Garage Products Bushings, added Left Rear brake caliper. EBC Brake Pads.

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FPD218

· #30 · Mar 14, 2021

Yes

PURE GENIUS - we need to get him a job in the engineering dept. at Polaris. (latebird)
FPD218, you should be on the Polaris design/build consult team. You have some good info you're passing on. (plumberwl5)
5X ATV OF THE MONTH WINNER. ***** OF ALL THE PATHS IN LIFE YOU TAKE, MAKE SURE A FEW OF THEM ARE ON DIRT!
2019 Sportsman 850 SP Premium, Removed all Warning Decals, 3500# Polaris Winch W/Synthetic Rope, Winch Stopper Cable Line Saver, Garmin GPS176C, Ram Mount, Polaris Rear View Mirrors, 4" Front Rack Extender, ATV-GURU.COM Front and Rear Bumpers, 2" Receiver in Front Bumper, Kenda K587 HTR Bear Claws 26X9X14 & 26X11X14, Rear LED work lights/strobes, Polaris Lock & Ride Rear Storage Box, Ultimate Series Windshield Fairing, Mid & Low Height Windshield, Center LED Brake/Tail Light, HighLifter Springs, Garage Products Bushings, added Left Rear brake caliper. EBC Brake Pads.

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FPD218

· #35 · 5 mo ago

STEPE29700 said:
View attachment 175209

Welcome to the forum

PURE GENIUS - we need to get him a job in the engineering dept. at Polaris. (latebird)
FPD218, you should be on the Polaris design/build consult team. You have some good info you're passing on. (plumberwl5)
5X ATV OF THE MONTH WINNER. ***** OF ALL THE PATHS IN LIFE YOU TAKE, MAKE SURE A FEW OF THEM ARE ON DIRT!
2019 Sportsman 850 SP Premium, Removed all Warning Decals, 3500# Polaris Winch W/Synthetic Rope, Winch Stopper Cable Line Saver, Garmin GPS176C, Ram Mount, Polaris Rear View Mirrors, 4" Front Rack Extender, ATV-GURU.COM Front and Rear Bumpers, 2" Receiver in Front Bumper, Kenda K587 HTR Bear Claws 26X9X14 & 26X11X14, Rear LED work lights/strobes, Polaris Lock & Ride Rear Storage Box, Ultimate Series Windshield Fairing, Mid & Low Height Windshield, Center LED Brake/Tail Light, HighLifter Springs, Garage Products Bushings, added Left Rear brake caliper. EBC Brake Pads.

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