2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 11Get this manual
IdentificationFeatures and benefits Features and benefits Newly developed V6 4-stroke engine
The F225 is newly developed 60-degree V6 4-stroke engine with very compact and lightweight designIts size and weight are almost the same as the V6 2-stroke engines that are in current useThis F225 offers numerous advantages of 4-stroke engineCompared to conventional 2-stroke models, it emits much cleaner exhaust gases, offers better fuel economy, and realizes lower noise levels at idle and full throttleThrough the newly developed "In-bank exhaust system," which discharges exhaust gases from the center of both banks, the engine block and the surrounding equipment have been made compactIn addition, the six independent intake passages help to achieve high level of driveability and power output60