Patent ID: 6708634
Filing Date: 2004-03-23
Classification: B63H,F02B,F16C

Abstract:
An output power shaft structure for a personal watercraft, wherein 4-cycle OHC engine is carried on a watercraft body such that a crankshaft thereof is directed in a longitudinal direction of the watercraft body and a shaft of a propulsion device is connected to a rear end of the crankshaft on an extension line of the crankshaft, said output power shaft structure comprising:an output power shaft, said output power shaft being separate from the crankshaft and connected to the rear end of the crankshaft, wherein the rear end of the crankshaft is disposed in an engine case, and the shaft of the propulsion device is connected to a rear end of said output power shaft; and a transmission chamber in which a transmission mechanism for transmitting power of the crankshaft to a camshaft of the engine is provided at a rear portion of the crankshaft, and the rear end of the crankshaft and a front end of said output power shaft are connected to each other in the transmission chamber.