Patent ID: 6890228
Filing Date: 2005-05-10
Classification: B63H,F01N,F01P,Y02T

Abstract:
1. An outboard motor equipped with a water-cooled engine comprising: a combustion chamber; exhaust passage means for discharging to the outside exhaust gas from the combustion chamber, the exhaust passage means comprising an exhaust manifold having single pipe sections and a combined section, said single pipe sections and said combined section being connected together so as to extend in a longitudinal direction of the outboard motor; an exhaust manifold cooling water jacket for cooling the exhaust manifold; and a cooling water pump for supplying cooling water to the exhaust manifold cooling water jacket; wherein a water outlet is provided in the highest part of the exhaust manifold cooling water jacket, and communicates with an opening that communicates with the outside at least when the engine is running, and wherein a further water outlet is provided in the exhaust manifold cooling water jacket, said water outlet and said further water outlet being provided around a portion of said exhaust manifold extending in the longitudinal direction of the outboard motor such that one of the water outlets is in front of the other of the water outlets in the longitudinal direction.