These powerful lightweight cutters provide high torque even at low RPM.Forged steel crankshaft and piston with two rings for greater strength.Automatic and adjustable oil pump.The filter cover can be opened without tools.SpecificationPower/Displacement 3.4 HP - 2.5 kW/51.7 cm3Bar Length 41 - 46 cm/16" - 18"Oil Pump Automatic/adjustable/zero flow rate at idle speedOil Fuel Tank Capacity 0.27 L/0.5 L Dry Weight without bar & chain 5.0 kg