An outboard motor includes a drive shaft cover to cover a drive shaft extending downwardly from an engine, a lower unit turnable with respect to the drive shaft cover, and a harness. A lower housing of the lower unit houses a lower portion of the drive shaft and an electrical component. The harness is connected to the electrical component through an upper space provided in the drive shaft cover and through a lower space that communicates with the upper space from below in the lower housing.

A shift mechanism of an outboard motor has an electric actuator having a movable rod, and a guide structure for guiding a linear motion of a sliding body connected to the movable rod. In addition, the shift mechanism includes a link rod connected to the sliding body and bent to extend in a direction different from the direction of the linear motion of the sliding body. Furthermore, the shift mechanism includes a shift shaft part which is connected to the link rod, performs a rotational motion on the basis of a displacement of the link rod, and switches a range of a transmission mechanism provided below on the basis of the rotational motion.

A shift mechanism of an outboard motor has an electric actuator having a movable rod, and a guide structure for guiding a linear motion of a sliding body connected to the movable rod. In addition, the shift mechanism includes a link rod connected to the sliding body and bent to extend in a direction different from the direction of the linear motion of the sliding body. Furthermore, the shift mechanism includes a shift shaft part which is connected to the link rod, performs a rotational motion on the basis of a displacement of the link rod, and switches a range of a transmission mechanism provided below on the basis of the rotational motion.

An outboard motor to be attached to a hull of a marine vessel that reduces an amount of oil in blow-by gas reaching a breather chamber includes an internal combustion engine including a cylinder block including at least one cylinder. The cylinder block includes two blow-by gas flow paths to guide blow-by gas from a crank chamber to a breather chamber, and the internal combustion engine is oriented such that a crankshaft extends along a direction perpendicular or substantially perpendicular to a bottom of the hull when the marine vessel is sailing.

A power steering system for a watercraft includes an electromechanical rotary actuator mounted within a cylindrical housing. The electromechanical rotary actuator includes a motor and a gearing system. The housing, along with a stern bracket and an output flange, are sized and arranged to permit steering movements and trim/tilt movements of an outboard motor. The power steering system may include one or more of a redundant linear actuator, a trim/tilt mechanism, and a control system.

An outboard motor includes a case having a gear chamber, a drive shaft arrangement hole, and a propeller shaft arrangement hole, a drive shaft, a propeller shaft, a drive gear, a driven gear, a gear position setting member provided in front of the driven gear in the case and configured to set a position of the driven gear in a front-rear direction, and a screw mechanism configured to move the gear position setting member in the front-rear direction when the gear position setting member is rotated about an axis of the gear position setting member. The screw mechanism includes a first screw provided in the case and a second screw provided on the gear position setting member and configured to be screwed with the first screw.

An outboard motor includes a case having a gear chamber, a drive shaft arrangement hole, and a propeller shaft arrangement hole, a drive shaft, a propeller shaft, a drive gear, a driven gear, a gear position setting member provided in front of the driven gear in the case and configured to set a position of the driven gear in a front-rear direction, and a screw mechanism configured to move the gear position setting member in the front-rear direction when the gear position setting member is rotated about an axis of the gear position setting member. The screw mechanism includes a first screw provided in the case and a second screw provided on the gear position setting member and configured to be screwed with the first screw.

An outboard motor includes a power source, a drive shaft, a propeller shaft, a propeller attached to the propeller shaft, a case covering the power source, the drive shaft, and the propeller shaft, a water intake passage provided in the case, through which water is taken into the case from an outside of the outboard motor, a first pump configured to be driven by rotation of the drive shaft and to supply the water taken in from the water intake passage to the power source as cooling water, and a second pump configured to be driven by rotation of the drive shaft and to supply the water taken in from the water intake passage to the power source as the cooling water. The first pump and the second pump are arranged in a distributed manner in the outboard motor.

An outboard motor includes a power source, a drive shaft, a propeller shaft, a propeller attached to the propeller shaft, a case covering the power source, the drive shaft, and the propeller shaft, a water intake passage provided in the case, through which water is taken into the case from an outside of the outboard motor, a first pump configured to be driven by rotation of the drive shaft and to supply the water taken in from the water intake passage to the power source as cooling water, and a second pump configured to be driven by rotation of the drive shaft and to supply the water taken in from the water intake passage to the power source as the cooling water. The first pump and the second pump are arranged in a distributed manner in the outboard motor.

An outboard motor includes an outer propeller shaft extending in a front-rear direction, an inner propeller shaft extending in the front-rear direction and disposed at an inner peripheral side of the outer propeller shaft, a rear driven gear disposed at a rear side of a drive gear, a front driven gear disposed at a front side of the drive gear, and a case covering front portions of the outer propeller shaft and the inner propeller shaft, the drive gear, the rear driven gear, and the front driven gear. A first bearing rotatably supporting the outer propeller shaft on the case and configured to receive an axial load acting on the outer propeller shaft in a front direction is provided at an outer peripheral side of the front portion of the outer propeller shaft.