I have an 06 Scrambler 500. I just did some extensive work on the rear axle (bearings, sprocket, etc.) I have a brand new chain and the sprockets show no wear. 36t rear, 13t front, 76 links. I cannot even get the chain close to tight. I’ve adjusted the rear housing to max tightness and still way too loose. My machine is missing the plastic chain guard that mounts to the swing arm but I wouldnt think that would do it. Transmission and rear sprocket are in perfect alignment. I would consider changing the size of the front or rear sprocket but not having any luck finding a 14 or 37 teeth to fit.

Anybody got any suggestions on what I should look at? I’m out of ideas.

Thanks