What is this? Possibly a chain tension? - Polaris ATV Forum
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post #1 of 8 (permalink) Old 11-29-2010, 01:47 PM Thread Starter
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What is this? Possibly a chain tension?

OK... I was installing a new rear chain and noticed this "worn out piece"... any idea as to what it is?
I installed a new chain because the other was so loose, and worn out, it kept falling off the sprocket.

This seems like it might be a chain tensioner or something like that.



full size pic here
http://www.ornesscreations.com/image.../atv%20002.JPG

Last edited by mikeorness; 11-29-2010 at 02:10 PM.
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post #2 of 8 (permalink) Old 11-29-2010, 05:07 PM
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what machine is this?
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post #3 of 8 (permalink) Old 11-29-2010, 05:27 PM Thread Starter
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Polaris 1992 350 4x4 Trail Boss

sorry,... it's a Polaris 1992 350 4x4 Trail Boss

here is a full size pic from the rear, when I was replacing the chain today.
http://www.ornesscreations.com/image.../atv%20003.JPG


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post #4 of 8 (permalink) Old 11-29-2010, 05:34 PM
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I don't know much about chain driven ATVs but based on my dirt bike knowledge it looks like a chain idler pulley. A lot of times they'll be on a spring tensioned arm under the chain where it returns to the wheel sprocket. Sometimes they are just bolted to the frame and the chain rests on top of it to keep the chain from rubbing on the swing-arm when the suspension is extended.

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post #5 of 8 (permalink) Old 11-29-2010, 07:57 PM Thread Starter
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after searching more and more through stuff on the internet... I've come to the conclusion it it a "Chain Roller Guide". EXCEPT mine is very worn out! LOL

I'll have to check with the local Polaris dealer and possibly purchase one and install.


Thanks
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post #6 of 8 (permalink) Old 01-26-2012, 02:25 PM
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It is the Chain Guide.......but good luck finding one it'sbeen discontinued...If you find or more please let me know so I can get One. Thanks
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post #7 of 8 (permalink) Old 01-26-2012, 04:43 PM
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yes rubber protector that went over the round part and back across top of swing arm, dont know if you can get them or not, , did you replace sprockets when you repaced chain? if not new chain wont last long
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post #8 of 8 (permalink) Old 01-27-2012, 07:10 PM
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repalcing all sprockets and chains.......18 years is a long time
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