Patent ID: 6626714
Filing Date: 2003-09-30
Classification: F01M,F02B

Abstract:
An outboard motor comprising an engine having a substantially vertically-oriented crankshaft, a driveshaft coupled with the crankshaft of the engine so as to rotate therewith, and a lubrication system to supply lubricant to at least one component of the engine, the lubrication system comprising an oil pump assembly having a housing defining a pump chamber that at least substantially encircles a portion of the crankshaft, a rotor disposed within the pump chamber and configured to rotate with the crankshaft, a first seal member disposed above the chamber and configured to sealingly engage the crankshaft, a second seal member disposed below the chamber and configured to sealingly engage the crankshaft, and a third seal member disposed below the second seal member and configured to sealingly engage the driveshaft.