Patent ID: 6336434
Filing Date: 2002-01-08
Classification: F02B

Abstract:
An engine unit of an outboard motor comprising:an engine body; a crank case in which a crankshaft is vertically perpendicularly arranged in a mounted state of the outboard motor; a cylinder block which is disposed at a rear side of the crank case and in which cylinders are arranged; a cylinder head disposed at a rear side of the cylinder block, said crank case, said cylinder block and said cylinder head being disposed in the engine body; a magnet device mounted at a top end portion of the crankshaft projecting upward and comprising a stator and a flywheel to which a rotor is integrally formed, a bearing boss disposed at a mating portion of said cylinder block and said crank case; a bearing boss wherein said crankshaft is supported by said bearing boss and said bearing means; an oil seal disposed between the bearing boss and the bearing means, said magnet device being mounted to the engine body through said stator through a mounting portion, wherein a diameter of said mounting portion of the stator is larger than an outer diameter of said oil seal; and a crank angle detecting sensor disposed at an upper surface of the engine body and a mounting boss for mounting said sensor so as to be deviated sideways from a center line of the cylinder of the engine body, said sensor being mounted to said mounting boss in an upside-down manner.