I have a 1980 Kawasaki KZ 440 A. Technically it has a 444cc motor. Is my bike a 2 stroke or a 4 stroke? I'm experienceing loss of power, believed to be as a result of a valve sticking. I had someone tell me if its a 2 stroke it doesnt have valves. There is a separate place for oil, meaning i dont mix it with the gas. How many stroke do you suppose this is? Anything at all will help!!