Engine and personal watercraft equipped with engine

摘要

Disclosed is a personal watercraft capable of efficiently placing a dry-sump engine in a narrow engine room and of efficiently using a dead space in the engine room. The small dry-sump engine comprises: a plurality of cylinders; at least one cylinder head provided as corresponding to the cylinders; a crankcase chamber; an oil tank chamber independent of the crankcase chamber, the oil tank chamber being located lower than the cylinder head; and an oil return passage configured such that its upper end communicates with the cylinder heads and its lower end communicates with the oil tank chamber.