Abstract: A lubricating structure for a marine drive includes a lubricating oil supplying system that supplies lubricating oil to a meshing portion of a driven bevel gear and a drive bevel gear by utilizing centrifugal force exerted by rotation of the bevel gears and one or more passages formed in one or both of the bevel gears.

Abstract: A marine propulsion unit having an oil circulation system is provided. In the oil circulation system, lubricant is delivered from a bevel gear mechanism adjacent a drive shaft through an oil passage defined in a lower casing to a journal bearing supporting the drive shaft. From the drive shaft journal bearing, the lubricant flows through a gap between the drive shaft and the inner peripheral wall of a drive shaft chamber in the lower casing and then returns to the bevel gear mechanism.

Abstract: An outboard motor cam have a power transmission mechanism for transmitting rotational power of a crankshaft of an engine to a propeller through a drive shaft, an advancing/reversing-switching mechanism and a propeller shaft, and adapted to be propelled by the propeller being driven for rotation. A torque variation-absorbing device can be disposed in a coupling section between the crankshaft and the drive shaft, and supported through bearings.

Abstract: An outboard motor engine drives an output shaft which drives a propeller shaft. The output shaft has a drive gear that engages driven gears of the propeller shaft within an oil bath for holding a lubricant for soaking the drive and driven gears. The outboard motor has an oil pump, a suction passage, and a return passage. The oil bath communicates with a suction portion of the oil pump through the suction passage, while a discharge portion of the oil pump communicates with the oil bath through a return passage. An opening of the suction passage is exposed to the oil bath and is also positioned below the drive gear.

Abstract: An outboard motor engine drives an output shaft which drives a propeller shaft. The output shaft has a drive gear that engages driven gears of the propeller shaft within an oil bath for holding a lubricant for soaking the drive and driven gears. The outboard motor has an oil pump, a suction passage, and a return passage. The oil bath communicates with a suction portion of the oil pump through the suction passage, while a discharge portion of the oil pump communicates with the oil bath through a return passage. An opening of the suction passage is exposed to the oil bath and is also positioned below the drive gear.

Abstract: An outboard motor cam have a power transmission mechanism for transmitting rotational power of a crankshaft of an engine to a propeller through a drive shaft, an advancing/reversing-switching mechanism and a propeller shaft, and adapted to be propelled by the propeller being driven for rotation. A torque variation-absorbing device can be disposed in a coupling section between the crankshaft and the drive shaft, and supported through bearings.