Abstract: A marine outboard motor for a marine vessel. The marine outboard motor includes: a housing comprising a chamber and at least one inlet arranged to be submerged, in use, into a body of water in which the marine outboard motor is operated, in order to draw water into the chamber; an engine assembly comprising an internal combustion engine; a drive shaft positioned in the housing, wherein the drive shaft is coupled to the internal combustion engine to drive a propulsion arrangement; a cooling system for cooling the internal combustion engine, the cooling system configured convey drawn water along a coolant flow path through the housing to deliver the drawn water to the internal combustion engine; and a sleeve by which the drive shaft is sealed from drawn water within the housing, the sleeve having first and second ends, wherein at least a part of the drive shaft is encased within the sleeve.

Abstract: A marine outboard motor for a marine vessel is provided. The marine outboard motor includes an internal combustion engine, a drive shaft configured to transmit a drive force from the internal combustion engine, a propeller shaft, and a drive transmission configured to transmit the drive force from the drive shaft to the propeller shaft. The motor also includes a lubrication system configured to convey lubricant along a lubricant flow path to lubricate one or both of the drive transmission and the drive shaft, and a lubricant filter provided along the lubricant flow path and configured to remove solid contaminants from the lubricant as it flows along the lubricant flow path. The lubricant filter is configured to be driven by the drive shaft.

Abstract: A marine outboard motor is provided with a gear casing, a propeller shaft rotatable within the gear casing about a propeller shaft axis, a drive shaft having a drive gear, a clutch mechanism for selectively engaging the drive gear with the propeller shaft and a shift mechanism configured to operate the clutch mechanism. The shift mechanism comprises a support shaft which is fixed relative to the gear casing and which extends along or parallel with the propeller shaft axis, a shift shuttle which is slidable along the support shaft and is connected to a clutch member of the clutch mechanism, a shift finger pivotally mounted on the support shaft, and a shift rod coupled to the shift finger by a releasable coupling. The shift finger is configured to move the shift shuttle along the support shaft to operate the clutch member.

Abstract: A marine outboard motor for a marine vessel. The marine outboard motor includes: a housing comprising a chamber and at least one inlet arranged to be submerged, in use, into a body of water in which the marine outboard motor is operated, in order to draw water into the chamber; an engine assembly comprising an internal combustion engine; a drive shaft positioned in the housing, wherein the drive shaft is coupled to the internal combustion engine to drive a propulsion arrangement; a cooling system for cooling the internal combustion engine, the cooling system configured convey drawn water along a coolant flow path through the housing to deliver the drawn water to the internal combustion engine; and a sleeve by which the drive shaft is sealed from drawn water within the housing, the sleeve having first and second ends, wherein at least a part of the drive shaft is encased within the sleeve.

Abstract: A marine outboard motor is provided with a gear casing, a propeller shaft rotatable within the gear casing about a propeller shaft axis, a drive shaft having a drive gear, a clutch mechanism for selectively engaging the drive gear with the propeller shaft and a shift mechanism configured to operate the clutch mechanism. The shift mechanism comprises a support shaft which is fixed relative to the gear casing and which extends along or parallel with the propeller shaft axis, a shift shuttle which is slidable along the support shaft and is connected to a clutch member of the clutch mechanism, a shift finger pivotally mounted on the support shaft, and a shift rod coupled to the shift finger by a releasable coupling. The shift finger is configured to move the shift shuttle along the support shaft to operate the clutch member when the shift finger is rotated about the shift rod axis by the shift rod. A marine vessel including such a marine outboard motor is also provided.

Abstract: A marine outboard motor for a marine vessel is provided. The marine outboard motor includes an internal combustion engine, a drive shaft configured to transmit a drive force from the internal combustion engine, a propeller shaft, and a drive transmission configured to transmit the drive force from the drive shaft to the propeller shaft. The motor also includes a lubrication system configured to convey lubricant along a lubricant flow path to lubricate one or both of the drive transmission and the drive shaft, and a lubricant filter provided along the lubricant flow path and configured to remove solid contaminants from the lubricant as it flows along the lubricant flow path. The lubricant filter is configured to be driven by the drive shaft.