Fresh rebuild complete dismantle , each part cleaned in ultrasonic cleaner, new crank, piston, bearing seals, bearing and many other new parts. Carb rebuilt. Manual Zama. New ported custom muffler. Cylinder ports widened. Gasketless cylinder base. New case gasket. Intake opened. Oiler rebuilt. One tank of 40:1 gas ran through it. Not field used only ran to run motor.