Patent ID: 7228835

Claim:
An outboard motor comprising a multi-cylinder internal combustion engine having combustion chambers each being defined by a cylinder head, piston, and cylinder bore, an air intake manifold configured to introduce primary air and secondary air from the atmosphere into the internal combustion engine, the air intake manifold having a plurality of intake runners located next to one side of the internal combustion engine and extending from the cylinder head to a surge tank, and an idle regulating valve arranged to supply secondary air from the atmosphere to the surge tank, the idle regulating valve comprising an air intake port configured to receive secondary air and an air supply port arranged to supply the secondary air from the idle regulating valve to the surge tank, at least a portion of the idle regulating valve being positioned in a space between the internal combustion engine and the air intake manifold, and the air supply port of the idle regulating valve opening directly into the surge tank.