Thanks teachdocs........we have the same problem for sure. As I read your earlier thread I was afraid i'd picked up a real estate sign too because your description of the noise was so good. A loose chain on a sprocket is good and now that I think back my BX is pretty hot when it seems to occur. I also knew not to take it back to the dealer because they don't have the terrain I do at their lot. I have 20 rough acres and think maybe I push the little BX a little too hard. Its been a real handy tool and other then a few safety switch gremlins and now the clicking its worked like a tractor twice its size. Just wonder if this click is covered under warrenty. Is'nt the drivetrain covered 3 years?