This manual covers Yamaha 225G, 250B, and L250B Series outboard motors, designed for marine propulsion. These engines, typically V6 configurations with displacements around 3.3L and power outputs ranging from 200 to 250 horsepower, utilize fuel injection for efficient operation. Their robust engineering ensures reliability for various marine applications. Specific serial number ranges are detailed within for precise model identification. The purpose of this comprehensive Service Repair Manual is to provide essential information for the maintenance and repair of your Yamaha outboard. It includes detailed sections on general information, technical specifications, periodic inspections and adjustments, fuel systems, power units, lower units, bracket units, electrical systems, and troubleshooting. This guide is an invaluable resource for owners, mechanics, and technicians seeking to maintain optimal performance and longevity of their Yamaha engines.