Weibang lawn scarifiers are powered by briggs stratton petrol engines. The 750 series engines used on the weibang wb486crb scarifiers are extremely reliable, easy starting, tough efficient.lawn garden scarifiers remove moss thatch from the lawn with either tines or blades. This action allows moisture and nutrients to reach the grass roots so they will have a healthier growth and appearance. The wb486crb uses 28 double tipped carbon steel swing tip blades to cut into the ground.the swing tip blades will not bend or break if they strike an object and require a minimum of maintenance.the weibang wb486crb has a pressed steel body with a powder coated finish for durability, strength and added longevity. The scarifier has a max 46cm working width and the working depth can be adjusted down to 32mm below ground level. If used in transport mode the depth can be adjusted up to 20mm above ground level.specificationsmodel wb486crbtype scarifierdrive no, pushcontrols clutch systemengine briggs stratton 750 seriesengine displacement 163ccfuel petrolengine oil 4 stroke working width 46cmblade material carbon steelblade type 28 swing tip bladesblade spacing 33mmheight adjustment transport mode 20mmheight adjuster type screwheights infinitely variable from 32mm to 20mmworking depth 32mmtransport mode yescollector capacity n anet weight 58.3 kgwarranty manufacturer's 5 year domestic subject to annual service, 1 year commercial