Starter motor mounting/disposing structure in unit swing internal combustion engine

摘要

It is intended to provide a starter motor mounting/disposing structure in a unit swing internal combustion engine which structure permits a large layout freedom for the mechanisms associated with basic functions of the internal combustion engine, is fully protected against water and mud during vehicular running without requiring any special waterproof structure and is decreased in the number of parts required. In a two-wheeled motor vehicle provided with a unit swing internal combustion engine of a belt power transfer type, a starter motor mounting/disposing structure in the unit swing internal combustion engine in which a starter motor (80) is mounted within a left-hand unit case (16L) in a position along the outer periphery of a drive pulley (40) in a belt transfer mechanism in such a manner that a drive shaft (83) thereof is parallel to a crank shaft (36), further, the starter motor is covered with a left-hand case cover (47) and is disposed within a unit swing case.