Generac 2 Inch Clean Water Pump 6918 Specs Tackle big jobs faster with a CW20, featuring a powerful Generac 208cc OHV engine and custom Easy Primeâ„¢ funnel design for quick and easy priming. Its durable silicon carbide mechanical seals and cast iron volute and impeller keep this pump running longer and more efficiently. Durable 1'' frame to withstand the harsh environment Generac 208CC engine with low-oil shut down Onboard instructions with icons of key touch points make this pump easy to use Easy PrimeTMÂ custom funnel design with tethered priming cap for quick and easy priming Color-coded suction and discharge ports to ensure the correct hose connections Blue = Discharge Green = Suction Easily pumps up to 158 gallons per minute Silicon carbide mechanical seal for long life