Lubricating oil managing arrangement for an outboard marine drive engine

摘要

In an outboard marine drive, a tubular socket member is sealingly fitted into an opening formed on one side of the crankcase of the engine at a level corresponding to a normal engine lubricating oil level, and a transparent window member is sealingly fitted into an outer end of the tubular socket member. An engine cover covering the engine is provided with an opening aligned with the transparent window member so as to allow the level of lubricating oil in the crankcase to be inspected from outside the engine cover. The socket member may also be provided with an oil filler pipe bifurcating upwardly from the socket member at an oblique angle, and an oil drain pipe bifurcating downwardly from the socket member at an oblique angle so that filling and removing lubricating oil into and out of the crankcase of the engine can be easily accomplished without complicating the structure for managing engine lubricating oil.