Patent ID: 7370717

Claim:
A radiator unit of a motorcycle, in which a water-cooling type engine is mounted to a lower portion of a motorcycle body between a handle bar for laterally steering a front wheel and a rider's seat, said engine having a cylinder assembly having a substantially horizontal axis and a front portion inclining obliquely upward in a forward direction, a radiator unit is arranged in front of the engine, and a transmission unit is disposed at a rear portion of the engine and below the rider's seat, wherein said radiator unit is disposed so as to cover the front wheel and a cylinder head of the cylinder assembly from a front side thereof and is connected to the engine through a hose, the radiator unit has a vertically rectangular shape in an elevational section and is mounted to the motorcycle body through a rotational shaft extending vertically on lateral one side of the radiator unit in a traveling direction of the motorcycle, so that another one side one thereof is swung forward around the rotational shaft.