Parts list: № Number Qty Name Options 1 RE524568 1 Piston Ring Kit 2 40M1855 2 Snap Ring 3 R503480 1 Piston Pin 4 RE524564 5 Piston Replacement Kit (0.50 OS), (MARKED RE518838) Next page: ST150378 REPLACEMENT ENGINE ST150379 9901 (CONNECTING ROD BEARING KIT) ST150381 9901 (CRANKSHAFT PULLEY) ST150383 9901 (PISTON RING KIT) ST150386 9901 (RACK KIT) ST150376 9901 (PISTON/PISTON RING KIT 0.25 OS) ST150375 9901 (COMPLETE BLOCK ASSEMBLY) ST150374 9901 (GOVERNOR LEVER KIT) ST150373 9901 (FLYWEIGHT KIT) ST150371 9901 (BEARING KIT 0.25 US)