Hi, my name is Chris and I own a Mosquito Stinger motorized scooter that uses a Subaru 35cc engine. Been running for over 200 hours and haven't even made one repair to the engine. The rest of the scooter uses mainly bike parts besides the frame. I live in mass, I'm lucky I don't have to register or pay insurance for it in MA. I am having a problem locating a replacement sprocket for it so I will be posting around trying to get one made or find one. I have never ridden a motorized bike but I am interested in them and other fuel efficient vehicles. I also love to repair small engines and have read several books on the subject and fixed up a few engines. See ya on the fourms!