An outboard marine engine comprises a vertically aligned bank of piston-cylinders; a camshaft that operates a plurality of valves for controlling flow of air with respect to the vertically aligned bank of piston-cylinders, the camshaft vertically extending between a lower camshaft end and an upper camshaft end; and a cam lobe at the upper camshaft end. Rotation of the camshaft causes the cam lobe to cam open an uppermost valve in the plurality of valves. A lubricant circuit extends through the camshaft and has a lubricant outlet located at the upper camshaft end. The lubricant outlet is configured to disperse lubricant onto the uppermost valve, which is located above an uppermost cam bearing bulkhead for the upper camshaft end.

An outboard motor has an internal combustion engine and a sump with an interior for holding oil for the internal combustion engine. The interior is defined by a top, a bottom, and sidewalls that extend from the top to the bottom. At least a portion of the sidewalls tapers radially inwardly towards the bottom. An oil pickup conduit extends into the interior and is configured to convey oil from the sump to the internal combustion engine. A bumper is disposed on the oil pickup conduit and separates the oil pickup conduit from the sidewall.

An outboard motor includes an engine housed in a cowling and disposed above an upper case housing a driveshaft. A gear mechanism transmits a rotation of the driveshaft to a propeller shaft housed in a lower case disposed below the upper case. The gear mechanism is housed in an oil storage chamber of the lower case and is lubricated by a lubricating oil inside the oil storage chamber. An oil passage includes a lower oil port opening at the oil storage chamber, an upper oil port positioned higher than the lower case, and a longitudinal passage extending in an up/down direction inside the lower case.

A lubrication system in a marine drive has a lubrication circuit that conveys lubrication to componentry of the marine drive and a lubrication service port connected to the lubrication circuit. The lubrication system further includes a pump disposed in the marine drive, wherein the pump pumps lubrication through the lubrication circuit. A hydraulic valve is connected to the lubrication circuit, wherein the hydraulic valve has a normal operating position wherein lubrication in the lubrication circuit is pumped by the pump to the componentry, and has a servicing position wherein lubrication in the lubrication circuit is pumped by the pump to the lubrication service port.

An outboard motor includes an outboard motor body, a mount mounted on a boat body, and a support member that supports the outboard motor body so as to be steerable with respect to the mount. The support member includes an upper support that surrounds a drive shaft and supports the outboard motor body, a lower support that is spaced below the upper support, surrounds the drive shaft, and supports the outboard motor body, and a coupler that couples the upper support to the lower support.

An outboard propulsion system comprising an engine configured to receive oil; an oil pan configured to receive oil from the engine; and an oil reservoir configured to receive oil from the oil pan and provide oil to the engine, in use.

An outboard propulsion system comprising: a first portion for attachment to a boat comprising a stern, the first portion comprising an engine including a crankshaft; and a second portion comprising at least one propeller shaft having a longitudinal axis along the elongate length of the at least one propeller shaft, wherein the at least one propeller shaft is operably connected to the crankshaft via at least one drive shaft configured to transmit motive power therebetween, wherein the at least one drive shaft comprises a drop shaft and wherein the drop shaft is substantially perpendicular to the at least one propeller shaft, wherein the second portion is configured to pivot relative to the first portion about a steering axis, wherein the steering axis intersects the longitudinal axis of the at least one propeller shaft at an obtuse angle, wherein the first portion and second portion are configured to tilt together about a single axis of rotation substantially parallel to the stern of the boat, and wherein the first portion is fixed about a substantially vertical axis.

An outboard motor has a top cowl and a service lid on the top cowl is movable into and between a closed position enclosing the powerhead compartment and an open position providing manual access to the powerhead compartment from above the outboard motor. An engine is in the powerhead compartment, wherein a peripheral gap is defined between the top cowl and the engine. A serviceable engine oil device is in the peripheral gap and is manually accessible from above the outboard motor when the service lid is in the open position. A serviceable transmission fluid device is in the peripheral gap and is manually accessible from above the outboard motor when the service lid is in the open position. A serviceable gearcase fluid device is in the peripheral gap and is manually accessible from above the outboard motor when the service lid is in the open position.

An outboard-motor vibration-isolating cooler system apparatus providing a retrofit substitute for the midsection and the lower unit of a standard outboard motor, having a substitute closed-loop cooling system with an exterior heat exchanger, a substitute oil reservoir, a substitute exhaust system, and a substitute propulsion system with an isolating power-take-off shaft, allowing an existing standard outboard-motor powerhead to be used in conditions not conducive to standard open-loop water cooling, such as shallow-water, muddy-water, obstructed-water, seawater, or corrosive-water conditions.

In an outboard motor, a feed passage, through which a lubricating oil that flows upward from a gear mechanism due to rotation of the gear mechanism is fed upward from a gear chamber, includes a first feed passage, extending from the gear chamber to a connection passage via a first upstream passage, a spiral passage, and an interior of an upper bearing, in that order, and a second feed passage, extending from the first upstream passage to the connection passage while bypassing the spiral passage via a bypass passage. The bypass passage is positioned farther outward than the spiral passage in a radial direction of the driveshaft. A diameter of a cross section of the bypass passage that is orthogonal or substantially orthogonal to a center line of the driveshaft is smaller than a maximum diameter of the driveshaft.