Parts list: № Number Qty Name Options 1 RE524563 5 Piston Replacement Kit MARKED RE518837, USE WITH RE523913, 0.25 OS 2 RE524567 1 Piston Ring Kit 3 40M1855 2 Snap Ring 4 R503480 1 Piston Pin Next page: ST626053 9901 Bearing Kit ST696757 9901 Piston Replacement Kit ST696825 9901 Rack Kit PICT-990.1 990 Service Kits 5030HF220 ST994144 9901 Rear Oil Seal ST614749 9901 Fuel Control Rack Guide Kit ST614542 9901 Thermostat Kit ST614540 9901 Thermostat Kit ST614539 9901 Throttle Lever Kit ST614538 9901 Throttle Lever Kit