Hey, you probably have a 30cc. Most of the late Homeys were. Even the Ryobis with the yellow boom were Homeys. I have just finished one of these. It has been redesigned with a new cylinder. I was skeptical if it would match the old Homey as maybe it was an emmisions engine, but it runs fine. Mine is on a 16lb H-9 Super Cub and it flys it with reasonable authority. You should be fine. Do like Ralph says and dump the carb.