Structure for secondary air channel feeding to exhaust gas involves integral guide part formed by opening core for inlet of secondary air into exhaust gas at outlet aperture of cylinder head

摘要

The secondary air channel (41) to the exhaust gas (46) is formed opposite to a guide projection. It is formed at right-angles to a cylinder head sealing surface. A membrane valve (49) is provided inside a chamber (40) and is closed from the upper side by a cover (50). A connecting tube (51) is integral with the cover and cleaned air as secondary air is sucked through a filter via a hose (52).