Patent ID: 7926740

Claim:
A pressure washer comprising: a frame; an engine coupled to the frame, the engine including an output shaft and a throttle control that controls a speed of the output shaft; a centrifugal clutch including an input portion operably coupled to the output shaft and an output portion, the input portion of the centrifugal clutch operable to be selectively coupled to the output portion; a pump assembly including a pump mechanism operably coupled with the output portion of the centrifugal clutch to pressurize a fluid when the input portion of the centrifugal clutch is coupled to the output portion; a manifold in fluid communication with the pump mechanism, the manifold including an inlet that receives fluid at a first pressure, an outlet that outputs fluid at a second pressure, a first pressure line fluidly coupled to the pump mechanism, and a second pressure line; a sprayer system in fluid communication with the second pressure line and the outlet, the sprayer system including a trigger adapted to be actuated by a user between a first, closed position and a second, opened position; and an actuator operably coupled to at least the engine throttle control and the second pressure line to actuate the engine to drive the output shaft and increase or decrease the speed of the output shaft based on a pressure differential between the first pressure line and the second pressure line; wherein when the trigger is in the first, closed position, the pressure differential is such that the pressure in the first line is less than the pressure in the second line which causes the actuator to cooperate with the throttle control to operate the engine at an idle condition; wherein the input portion is selectively decoupled from the output portion such that the pump is selectively decoupled from the engine when the actuator cooperates with the throttle control of the engine to operate the engine at the idle condition.