When you need to move a lot of water fast--emergency or not--you can't always count on a convenient supply of electricity. This great little clear-water pump supplies it's own power but doesn't take up a lot of room doing it. Well-designed and ruggedly built to provide years of reliable pumping. EPA-approved single cylinder air-cooled 3800 max RPM gas engine with low-oil cut-off, non-contact transistorized ignition, easy recoil start, choke, throttle and on/off. Fuel capacity 1.4L (1.5-2.0 hrs runtime); .4L SF15-40 oil. Centrifugal clear-water pump (requires priming), maximum solid 5/32" diameter. One-year warranty and Jack's Tool Shed worry-free Satisfaction Guarantee.