Patent ID: 7798872

Claim:
A water jet propulsion boat propelled by a jet pump actuated by an engine activated by a control unit, the water jet propulsion boat comprising: an engine and a control unit arranged to activate the engine; a jet pump arranged to propel the water jet propulsion boat, the jet pump arranged to be actuated by the engine; a fuel tank disposed in a boat body of the water jet propulsion boat; a fuel pipe extending from the fuel tank to the engine; a fuel pump activated by the control unit and arranged to deliver fuel from the fuel tank to the engine via the fuel pipe; and a fuel pressure detection unit arranged to detect the pressure of the fuel delivered to the engine by the fuel pump; wherein the control unit is arranged to activate the fuel pump when a magnitude of fuel pressure detected by the fuel pressure detection unit is less than a predetermined magnitude; and the control unit is arranged to deactivate the fuel pump when the magnitude of the fuel pressure detected by the fuel pressure detection unit is equal to or greater than the predetermined magnitude.