Chicken-Power,== I know a lot about these ! They used the 1hp Ohlsson & Rice motor. Also, similar kits sold under the name Orline, [ see my Avatar pix ]. O & R were also famous for R/C airplane/boat engines. Tough, screaming little motors !! If it has sat awhile, they will almost always need fuel system cleaning & a carb diaphram. That part is available as a reproduction, but it's awfully hard to find other parts. These engine show up on E Bay quite often, powering many different tools, as well as bike motors. I wish they were still in business. Many won't like to hear me say this,, but quality wise, they put the Chinese motors to shame !