Hey everyone,

I have a 2004 Polairs Sportsman 500 and I just got back from a weekend full of muddin and trail riding. While riding, I notices a knocking sound when I went in reverse in both 2wd and 4wd. I was hoping it was a rock or something caught up in the drive terrain, but when I cleaned it up it still made the same noise. The knock sounds like something is in a bind and then it frees itself and steadily repeats. It nevers makes the noise while going forward, only in reverse. I have no idea what it could be. Any help would be greatly appreciated!!!

-Sportsman

 

How do the CV joint covers look? Any tears or rips? Just from what you described, I would think it could be a CV joint issue.

 

Yes there is a tear in the CV joint boot. Now that you mention it, that sound would only make sense from a cv joint. Thanks for the reply...... I hope they don't cost too much........


-Sportsman

 

sportsman5004x4,

so did you ever find out what the knocking sound was?

X

 

Had the same thing happen with my 96 425, it is the silent chain thats stretched, if not repaired it will take out the gears and maybey break the case.. I put new chain and seals in mine for 80.00 pretty big job to pull trans ect. took me probably6 or 7 hours but well worth it.