Center sprocket replacement - Polaris ATV Forum
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post #1 of 8 (permalink) Old 09-16-2019, 11:20 PM Thread Starter
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Center sprocket replacement

I’m trying to replace the center sprocket that drives the rear chain. I have removed the center bolt and the outside center sprocket. There’s two bolts I’ve removed for the housing for that sprocket. I can’t seem to get that housing out. Is there a clip or something I’m missing?

Thanks
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post #2 of 8 (permalink) Old 09-17-2019, 05:28 AM
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What year are you working on? I have a 1990 on my lift I can look at. I changed the one on that machine a couple years ago but don't remember off the top of my head what was needed.

Mine: 2018 Sportsman 850SP - 26" Bear Claw HTRs on OEM steel wheels(I really don't like the Aluminum ones)
Polaris Hand warmers, Mirrors.
Hers: 2019 Sportsman 450. 26" Bear Claw HTRs on Moose 427X Wheels.

2007 Sportsman 500 EFI, Polaris Winch, 25" Bear Claws QSC Clutch Kit, Hand Warmers
2001 Magnum 325 MOSE 12" rear wheel conversion. 25" Sedona Coyote tires
2017 Polaris Ranger 1000XP - Roof and front glass
2018 Kawasaki KLR650
2001 Magnum 325 Warn winch and Moose 60" plow-Sent to Daughter and Son-In-Law since his blew up
SOLD 2004 Sportsman 600 Twin
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post #3 of 8 (permalink) Old 09-17-2019, 05:54 AM
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He's working on a 1990 350L 4x4

Shop Owner and Mechanic with over 50 years experience
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post #4 of 8 (permalink) Old 09-17-2019, 10:51 AM
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Looks like there's 3 bolts in the chain cover 2 in front and one under the bottom.
You do know the inner sprocket has a snap ring on the shaft holding it don't you?
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post #5 of 8 (permalink) Old 09-17-2019, 01:56 PM Thread Starter
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Thank you. In the first picture, on the left. I can’t seem to get part #3 to break free. It appears to be pushed in .
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post #6 of 8 (permalink) Old 09-17-2019, 05:17 PM Thread Starter
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Looks like a bearing needs help to be taken off
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post #7 of 8 (permalink) Old 09-17-2019, 05:50 PM
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Quote:
Originally Posted by Kayakextreme View Post
Looks like a bearing needs help to be taken off
Its not surprising that a 20 year old bearing needs a little persuasion to come off the shaft.
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post #8 of 8 (permalink) Old 09-19-2019, 02:48 AM Thread Starter
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The bearing came off. Thanks for the help. I hate breaking out the BFH when it’s a little clip or something easy that I missed....
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