Weibang lawn scarifiers are powered by briggs stratton petrol engines. The 750 series engines used on the weibang wb384rb 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 wb384rb uses 22 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 wb384rb has a pressed steel body with a powder coated finish for durability, strength and added longevity. The scarifier has a 38cm working width and the working depth can be adjusted down to 16mm below ground level. If used in transport mode the depth can be adjusted up to 20mm above ground level. Specificationsmodel wb384rbtype scarifier lawn rakedrive no, pushcontrols clutch systemengine briggs stratton 750 seriesengine displacement 163ccfuel petrolengine oil 4 stroke working width 38cmblade material carbon steelblade type 22 swing tip bladesblade spacing 33mmheight adjustment transport mode 20mmheight adjuster type screwheights infinitely variable from 16mm to 20mmworking depth 16mmtransport mode yescollector capacity 40 litresnet weight 46 kgwarranty manufacturer's 5 year domestic subject to annual service, 1 year commercial