Engine-Driven mobile hotwater Unit for professional use Compact Dimension - fully Metal-Chassis and Cover Highest mobility by gasoline-motor High stability and best maneuverability by 4 large air-filled wheels Triplex-Piston Pump with Brass Pump-Head, Ceramic Plungers and st.st. Valves Horizontal Heatexchanger Gear-Box to Reduce Pumpspeed Automatic Throttle - Control included Optional Electric - Start-standard for HDD 1240