Patent ID: 6868819
Filing Date: 2005-03-22
Classification: F01M,F02B

Abstract:
1. A lubricating system for an outboard motor equipped with a vertical type engine, the vertical type engine having a cylinder block, cylinder heads, a crankcase, and a crankshaft, the lubricating system comprising: an oil pump positioned near the bottom of the engine, the oil pump driven by an oil pump rotor that is positioned at a connection between the crankshaft and an engine drive-shaft, the oil pump rotor being linked to the crankshaft, a main oil gallery for storing lubricating oil circulated by the oil pump, the main oil gallery located in the cylinder block; an engine-cooling water passageway positioned next to the main oil gallery; a filter-mounting base positioned on an outer wall of the cylinder block; a first oil passageway positioned at the bottom of the cylinder block and extending from the filter-mounting base to the main oil gallery; a second oil passageway positioned at the bottom of the cylinder block and extending from the filter-mounting base to an oil discharge port of the oil pump; and a filter stand mounted on the filter-mounting base, the filter stand having a generally horizontal, upwardly directed filter-mounting face for receiving an oil filter and two connecting passageways formed inside the filter stand for changing the flow direction of lubricating oil.