I have what is believed to be a 26cc motor, and it has given Me fits. I never get more than 30 seconds run time, and I am tired of fiddling with it. It is being sold "AS IS, WHERE IS" NO returns or warranty. What You see is what You get,Period. No Haggling or low balling. If it doesn't sell, it goes in the Bin. If You don't like My rules, go play in another sandbox.. Thanks for looking...