The walk behind snapper nx 40 is a single speed self propelled rotary lawnmower with a 42cm 16 cutting width. The nx 40 is a 4 wheel lawnmower with high rear wheels which means it can handle most lawn conditions including those with inclines or with uneven areas and still produce a good cut and finish. 4 wheel mowers are easy to manoeuvre around garden obstacles such as shrubs, bushes or flower beds. Using a self propelled or power driven mower lessens the amount of effort required by the user to mow lawn areas.suited for small to medium domestic lawn areas the snapper nx 40 is powered by a briggs and stratton 500e petrol engine which uses unleaded fuel and 4 stroke engine oil.you can use the nx 40 in 2 different mowing modes. The traditional cut and collect method into a grass bag or with the bag removed in rear discharge mode. More useful in longer grass or less formal areas as the trimmings are ejected to the rear of the mower and left to wilt back naturally into the soil. The snapper nx 40 has a high lift cutting blade fitted which 'lifts' the clippings higher into grass bag. The fabric 60 litre grass bag lets air circulate through the clippings packing them in tightly so you waste less time emptying the collector and more time mowing.a single lever adjusts the grass cutting heights through 6 different positions from 2.8 9.2cm ensuring the correct cut for the lawn.specificationsmodel nx40type rotary, 4 wheelengine briggs stratton 500estarter recoilfuel unleaded petrolengine oil 4 strokedrive self propelled, single speedcutter deck material steelcutting width 42cm 16 inchblade type rotary, high liftcutting heights 2.8 9.2cmcutting height adjustment 6 adjustments with a single levergrass collector material fabricgrass collector capacity 60 litresrear discharge yesdry weight 26kgwarranty manufacturer's 2 year