Okay, I am NOT a particularly mechanical guy, and don't know much about small engines. But I'm hoping someone can suggest how I might repair my mower without having to pay a professional. Money's tight all over. The engine almost always runs on after being turned off, especially after it's been running for a while. I've been pulling the plug wire as a shutoff manouever. I'm sure there is probably a simple remedy. Might it be something an amateur could handle? Thanks for any help.