Generally speaking, an outboard motor is a small electric or gas engine that is placed outside the boat. These engines are designed to power boats, pontoons, and speed boats. They use a four-stage cycle to power the propeller. The motor's design allows it to turn in almost any direction.
A typical outboard motor is made up of three major sections: the engine block, the midsection, and the lower unit. The lower unit houses the propeller and driveshaft. The midsection is the metal casing that connects the engine to the lower unit. The lower unit has several moving parts, including a water intake propeller, a skeg, an anti-ventilation plate, and a gearbox. The skeg acts as a rudder to help the boat turn safely. The skeg also protects the propeller from debris.
There are two types of outboard motors: two-stroke powerheads and four-stroke powerheads. Two-strokes are simpler to maintain and are generally lighter. The four-strokes are quieter and offer better fuel economy. Four-strokes also offers more power and torque at lower rpm.
The midsection of the outboard motor is the part that connects the engine to the lower unit. It contains the engine block, pistons, and an exhaust housing. This section is also where the drive shaft goes through. The driveshaft drives the conventional-looking propeller. A four-blade prop beats a three-blade prop in low-speed handling. However, a four-blade prop is more effective in mid-range speed.
The T9.8 outboard engine is a 2 cylinder, single overhead camshaft, 4 stroke diesel engine. Excellent performance, high reliability, environmental protection and easy maintenance. Large torque at low speed, flexible structure and good load performance. The engine is equipped with an engine developed from scratch according to the requirements of pvc fishing boats up to 40 HP. This means a speed rating of 810 rpm (neutral) is sufficient for a 40 hp small to medium boat with a maximum output of 6 hp and a typical cruising speed of 5 knots. The technical characteristics of this 2-cylinder diesel 2-stroke engine have been optimized by combining modern technologies such as new injection technology and gearbox construction using lightweight materials.