3 Parts Of An Outboard Motor With Their Function

Jun. 2 2023 News By Mellissa F.

The phrases outboard motor, power head, tiller, and stern fin may be familiar to you even if you're new to the boating community. The propulsion system of a ship is known to be the outboard motor. There is more space within the boat thanks to the design of an electric motor, which is positioned outside. If you're curious about the parts of an outboard motor, here are the three main parts of an outboard motor with their function.

Outboard Power Head

The numerous parts that make up an internal combustion engine are located on top of the outboard powerhead or engine.

  • Crankshaft: Within the engine block, the piston is fastened to the crankshaft. Power is produced by the crank rotating around the pistons as they rise and fall.
  • Engine Block: The engine block contains the piston rods, pistons, and crankshaft as well as where the moving components of the engine are housed.
  • Cylinder Head: The cylinder head, another component of the engine block, is located above the cylinder. The region often houses the camshaft, spark plugs, cams, and shutoffs.

The cooling channels, which are built into the engine block, cylinder heads, and cylindrical tubes, are another crucial component. These flows spray cooling water over the engine's powerhead to prevent overheating and other damage.

Center Area

The outboard engine's center section is a metal casing that joins the engine to the bottom component. Its main function is to function as a network to link the lower device parts to the engine parts.

A tilting device that elevates the engine out of the water is often found on smaller watercraft. With the flip of a switch, an electrical motor raises and lowers the engine on larger outboards along with some smaller ones.

Additionally, you will undoubtedly find the engine's essential structural component, the drive shaft real estate. The pipes that connect to the lower system and carry cooling water to the powerhead make up this.

Rear Area

The outboard lower unit, like the powerhead, contains a lot of moving components.

The outboard lower unit is submerged and is made up of a number of parts, such as a clutch, driving shaft, gear set, clutch, seals and gaskets, and shift mechanism.

The propeller's rotation is controlled by the shifting mechanism. The gears push against the teeth of another gear to impart rotational forces. To operate the drive shaft in the outboard lower system, they turn the engine torque by 90 degrees.

The pinion gear, the reverse gear, and the forward gear are the three gears that are located in the outboard reduced system. These gears transmit pressure from the power source to produce a range of speeds, torques, and directions. Additionally, the tiller is essential for guiding the boat. The driver steers the boat using a lever attached to the tiller stem, which may also be thought of as a steering wheel.

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