Oil tank system for engine

摘要

An oil tank system for an engine capable of reducing the overall height of an engine is disclosed. Breather chambers of a dry sump type engine in which an oil tank for storing engine oil is provided independently from the engine are defined in an oil tank. The breather chambers and are in communication with the engine and a breather chamber section is partially partitioned into the first breather chamber and the second breather chamber with a gasket. An oil sump portion for accumulating oil during period of turn-over of a watercraft is formed in the first breather chamber. An oil return passage provided in the first breather chamber forms a breathing passage during a turn-over condition of the watercraft. A sump portion for oil which counter flows in the return passage during a turn-over condition of the watercraft is provided in an upper portion (lower portion during a turn-over condition) of the second breather chamber.