Argo troubles

Hi guys got a avenger with a broken tooth on lower idler sprocket . Do I have to tear the whole buggy apart to remove that sprocket .

And when I say tear down I mean remove the whole frame from body

Although I do not have experience with an avenger (pretty sure someone with an avenger will chime in), it won't be necessary to remove the frame from the body. Check Adventure Argo in the Manuals section - there should be a manual for your machine which will show the steps required to remove/replace the idler shaft.

No,
Remove the chain, raise transmission for clearance, remove all nuts from flanges, if your sprocket is held in with snap rings move them, it your sprocket has a set screw loosen that, slide sprocket outward, slide idler shaft inward and then outward and up. Cursing is allowed.

If that little chip is the issue, I'd personally run it. If you can raise the trans as high as pictured with the chains on, replace them or if machine is at or above 300 hours and untouched.

It has new idler chains .i raised the tranny 3/4 in that photo for clearance ...I'll raise it all the way any try again...yea the sprocket was still working but I was having a hard time getting equal tension on both sides .thanks for the help boys ...they are great machines I am very pleased with how they will crawl over pretty much everything ��

I did mine last fall, and it's some work, but as ArgoJim mentioned, it was all done in place. Whoever designed the machine must have had to work on them in the past, since it looks like pretty close to everything can be done without tearing the whole machine down. At least on my '07 anyways.