Its not hurting it
since im guessing its carbed, anything you tip over will start to get flooded or loose gas because your float bowls are upside down. pretty normal with sleds/dirt-bikes etc.
Its fine just tip it upright and Clear out the flooding by getting on the throttle/pipe good for a sec.
It wont actually do any damage its fine. I do waaay worse to mine! they are made to take a serious beating if you keep them setup right.