Parts list: № Number Qty Name Options 1 RE524563 5 Piston Replacement Kit (FOR ORIGINAL PISTON MARKED RE516347) (0.25 OS), (MARKED RE518837) 2 RE524567 1 Piston Ring Kit 3 40M1855 2 Snap Ring 4 R503480 1 Piston Pin Next page: ST485520 9901 Piston, Piston Ring Kit ST485521 9901 Flyweight Kit ST485522 9901 Governor Lever Kit ST485523 9901 Throttle Lever Kit ST485524 9901 Throttle Lever Kit ST485518 9901 Crankshaft Pulley Friction Washer Kit ST485517 9901 Crankshaft Pulley ST485516 9901 Cylinder Head Gasket/Oversized ST485515 9901 Thrust Washer Kit ST485514 9901 Crankshaft Bearing Kit/Undersized