Here is a nice OS engine 15 fp, complete with muffler and bolts. Plenty of compression. It needs a needle valve assembly in the carb or a remote one. That's it. If you have a worn out engine or have a needle valve assembly your in luck. It isn't really a parts engine. Runs good. Asking 22.00 for it . Free shipping in the U.S. only. PayPal or m.o.