Patent ID: 7673594

Claim:
A water-cooled internal combustion engine, comprising: an engine body including a cylinder block provided with a cylinder block water jacket and a cylinder head provided with a cylinder head water jacket; and a water pump for pressure-feeding cooling water to the water jackets, and a radiator through which the cooling water of the water jackets circulates; wherein the radiator is disposed separated from the engine body in a prescribed direction; and a chain chamber extending, along a cylinder axis, from the cylinder block to the cylinder head in an end portion of the engine toward the radiator in the prescribed direction of the engine body, the water-cooled internal combustion engine comprising: a cooling water outlet portion open to the cylinder head water jacket the cylinder head, the cooling water outlet portion being connected with an inlet pipe for leading the cooling water flowing out of the cylinder block water jacket into the cylinder head water jacket to the radiator; and the cooling water outlet portion is disposed between the radiator and the chain chamber.