What type of engine is commonly used in Yamaha outboard motors?

Yamaha outboard motors predominantly utilize four-stroke engines due to several key advantages they offer. Four-stroke engines are known for their fuel efficiency, lower emissions, and quieter operation compared to two-stroke engines. These engines operate on a cycle that includes intake, compression, power, and exhaust strokes, allowing for a more complete combustion process and better energy output.

Furthermore, Yamaha has designed its four-stroke outboards to meet stringent environmental regulations, making them a suitable choice for both recreational and professional use. They also provide improved durability and reliability, which are essential for marine applications where consistent performance is crucial. The longevity and maintenance intervals of four-stroke engines further support their preference in outboard motor design, catering well to the needs of boaters looking for efficiency and effectiveness on the water.