Got new mower and love what it does for size and power. Just after a few hours a vibration occurs through out the rpm range and is felt at operator controls. Like I said I am happy with the mower but I think I have a serious problem in the engine. ARGGGGGHHHHH Bop said take it to a a authorized shop. So far no one wants to touch it bad deals in the past with warranty with Kaw. So I will keep you posted. Any other machines have the same problem? My guys ***** about the vibration. Took out of service now. Man I need a engine asap.