The SM20 will out-pump most all gasoline engine driven pumps. There is no recoil starting, priming or suction hose as with gas engine driven pumps. It can be run dry without damage. Submersed into the water and with its easy hookup to a power unit, the SM20 is instantly pumping. The abrasion resistant cast iron inlet wear ring is easily replaced from the inlet sit of the pump. With only a few moving parts, the SM20 is virtually maintenance free.