Abstract: A marine propulsion device comprising a lower gearcase, a propeller shaft having thereon a propeller and being rotatably mounted in the lower gearcase, a drive gear rotatably mounted in the lower gearcase, a transmission for causing driving engagement between the drive gear and the propeller shaft, a lever rotatably mounted in the lower gearcase and operably connected to the transmission for actuation thereof in response to rotation of the lever, and a detent mechanism for releasably retaining the lever in a predetermined position.

Abstract: A marine propulsion device comprising a lower unit including a propeller shaft mounted for rotation about an axis, a propeller mounted on the propeller shaft, a drive gear, and a transmission including an actuator movable along the propeller shaft axis for selectively effecting driving engagement between the drive gear and the propeller shaft, an engine drivingly connected to the drive gear, a shift member movable along an axis transverse to the propeller shaft axis, and a mechanism selectively connectable, in alternative first and second conditions, between the shift member and the actuator for moving the actuator in opposite first and second directions along the propeller shaft axis in response to movement of the shift member in opposite directions, the mechanism moving the actuator in the first direction when connected in the first condition and when the shift member is moved in one direction, and the mechanism moving the actuator in the second direction when connected in the second condition and when the

Abstract: A marine propulsion device comprising an engine, a lower unit adapted to be mounted on the transom of a boat for pivotal movement relative thereto about a generally vertical steering axis, the lower unit including a lower gearcase having therein lubricant, and a propeller rotatably supported by the lower gearcase, a generally vertical drive shaft rotatably supported in the lower unit and including an upper end driven by the engine, a lower end drivingly connected to the propeller, an axial bore extending upwardly from the lower end and defining a sleeve portion of the drive shaft, and an aperture extending radially through the sleeve portion, and internal threads within the axial bore for pumping lubricant from the lower gearcase upwardly through the axial bore to the aperture so that the lubricant flows outwardly through the aperture.

Abstract: Disclosed herein is a marine propulsion device comprising an internal combustion engine, a lower unit including a rotatably mounted propeller shaft drivingly connected to the internal combustion engine and a propeller mounted on the propeller shaft, the lower unit further including a gearcase housing having an interior groove and a locating shoulder, a propeller shaft bearing housing within the gearcase housing engaging the locating shoulder, a beveled retaining ring received in the interior groove and engaging the propeller shaft bearing housing to bias the propeller shaft bearing housing against the locating shoulder, and a locking mechanism for preventing rotation of the propeller shaft bearing housing relative to the gearcase housing and for preventing disengagement of the beveled retaining ring from the interior groove.

Abstract: A marine propulsion device comprising a mounting assembly adapted to be mounted on the transom of a boat, and a propulsion unit mounted on the mounting assembly for pivotal movement relative thereto about a generally vertical steering axis, the propulsion unit including a rotatably mounted propeller, and an internal combustion engine drivingly connected to the propeller, the engine comprising an engine block, a timing member mounted on the engine block for movement relative thereto in opposite advance and retarding the spark timing of the engine, a releasable lock for preventing movement of the timing member in the retard direction, and an operator actuatable mechanism for releasing the lock and moving the timing member in the retard direction, and for moving the timing member in the advance direction.