We took our new 2015’s up the mountain last weekend for the first time. After riding for a couple hours we stopped for lunch. Fired up the machines and heard what sounded like a loose bolt or metal housing around the exhaust in the back of one of the machines, like a loud rattle of metal. It happened right when the motor turned over and lasted, maybe, 3 seconds. It happened only three more times the rest of the day. Our other 2015 does not make this noise at all. Took it to the dealer who said most of the 2015 1K’s make that noise and that it is related to the hydraulic tensioner chain moving oil into the motor? He fired up new machines on the lot and some of them made the noise but not as loud as mine. Has anyone noticed this noise, and if so, what was your diagnosis? If this is normal, fine, but want to be sure its nothing else.

Thank You!!