Patent ID: 7344424

Claim:
A water-jet propulsion personal watercraft comprising: a multiple-cylinder engine which is mounted in a body of the watercraft and is constructed such that cylinders are arranged in a longitudinal direction of the body, the engine being configured to drive a water jet pump configured to propel the watercraft; and a mechanically driven supercharger configured to supply air taken in from outside to the engine; wherein the engine has air-intake ports configured to open toward one side relative to the engine and toward one lateral side of the body and exhaust ports configured to open toward an opposite side relative to the engine and toward an opposite lateral side of the body; wherein the supercharger is disposed below the air-intake ports and above a crankshaft when viewed from the side of the engine on the one side relative to the engine such that a rotor shaft of the supercharger is parallel to the crankshaft of the engine; and wherein the rotor shaft of the supercharger is configured to be coupled rotatably in association with a camshaft provided in a cylinder head of the engine via a first pulley mounted to a rear portion thereof, a second pulley mounted to a rear portion of the camshaft, and a belt installed around the first and second pulleys.