Stihl Petrol Lawn Mower RM 4 RT MulchRM 4 RT Petrol Mulching Lawn Mower: Robust petrol mulching mower with 1 speed drive. Ideal for large lawns up to 2500m, the RM 4 RT self propelled mulching mower features optimised design, robustness and high quality equipment such as QuickFix, quick release handles for compact storage and transport, skirt protectors and a powerful Kohler engine. Mulching saves time as the grass clippings do not have to disposed of, instead the shredded grass is