Gas Powered Hydraulic Power Unit Engine Size 570cc Engine RPM 1800-3100 Engine Brand Briggs and Stratton Max Pressure 2 500 psi Nominal Flow 8 gpm Reservoir Capacity 3 gal Relief Valve Range 1000 to 3000 psi Pressure Port Thread Size 7/8 In.-14 UNF Return Port Thread Size 3/4 In.-16 UNF Overall Length 36 in Overall Width 36 in Overall Height 29 1/2 in Includes Hydraulic Oil