banging

You know I had a lot of fun with this used raptor I bought. (see trying to find numbers on my Raptor... Briggs and Stratton section). I have learned never buy a used motor unless it's on a snow plow or rototiller :censure: ! Anyway fired it up and to my surprise it is banging like crazy...

Hi my 5.5hp Jiangdong is making a very loud banging noise, like a hammer is hitting the inside of the engine. I recently cleaned the carb and set the valve lash, changed the oil, replaced the spark plug and all was working well, then the "banning noise started a few days later. I believe it's...