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Originally posted by jmck70eb:
I recently purchased a 91 Polaris Indy Classic 500. after putting on about 250 miles i started to hear a grinding sound when i start out, sounds like a sprocket or a gear jumping.. Seems to be coming from the right side where the reverse housing is.. I checked the bearing in the jackshaft and drive shaft & they seem good... I can see a tensioning bolt on the rev. housing but I'm not sure how to set it for the proper tension? Oh, the guy I purchased the sled from said that the reverse gears had been replaced.. So I'm guessing there good and only need adjusting.. I'm hoping anyway... Thanks Jim
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I've got a 97 XLT SP w/Rev. My drive chain blew last season, shattering the case and stripping several teeth off of some gears. I had to replace the entire set up (pain in the a$$).
It definately sounds like your chain is slipping (obviously not good). To adjust the tention of the chain, you need to locate the bolt and nut on the right hand side of the case (as your looking straight at the case).
First loosen the lock nut that is on the bolt, and against the case.
Then finger tighten the bolt. My manual then states that you should back the bolt out by 1/4 turn. This leaves the correct amount of "play" in the chain.
Then tighten the lock nut down w/a wrench. Be sure to have a wrench also on the head of the bolt to prevent it from moving when you tighten the nut; and there you have it.
Also like Erick said, be sure to check that the oil in the case is at the proper level. I try to use my rev as little as possible to "preserve" it. You should check the tension of the chain fairly frequently to be sure it has the proper amount of play in it. You don't want to have to replace everything like I did....$600 for the whole kit and kabootle. Best of luck to you.
1997 XLT SP 600