The power switch is a rocker switch and it has two symbols on the face: \u201cO\u201d and \u201c\u2014\u201c. They are the International symbols for power \u201cOn\u201d and power \u201cOff\u201d. \u201cO\u201d means the power is OFF and \u201c\u2013\u201cmeans the power is ON. To turn the power washer ON, press the \u201c\u2014\u201cdown on the power switch.