I hate to say this but the guy they bought the motor from I found his site , he sells automotive equiptment and out of 13 reviews only one had 4 stars and like 6 give him 1 star. With his reputation and the fact that the shaft is scuffed up and the electrical is lunch I can't see him getting his money back. I tried looking at numerous pics he had of the engine but could not tell if it was the GY6 50cc or 150cc. I do know they look identicle on the 4 stroke models and are the same size. This I am certain because I have a 50cc GY6 is my invetory as well as a 150cc and the 50cc is stamped on the cylinder and head but there is also an epa compliance sticker on the side of the engine which gives you the displacement.
TOM
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