I did my first oil change at 600 miles, piece if cake, took a few minutes. Then I thought I would clean and lube the chain. It took a couple minutes to get the chain guard with it unusual fasteners. I did the chain then went to reinstall the chain guard. It took me an hour to do that. Is there a trick to this? Next time I will remove the left muffler to get in there and reinstall the fasteners.