A very well looked after Masport Olympic 500 cylinder mower. 20 inch cut, self propelled, starts first time every time and ready for the season. In excess of £1000 new. The Masport Olympic 500 Cylinder Lawnmower. This is a fantastic 20"/50cm Petrol Cylinder Mower from renowned lawnmower makers of quality Masport, offers unrivalled build-quality . It has exceptional cutting and striping performance.