This manual covers the Yamaha 225G, 250B, and L250B Outboard motors, designed for reliable performance in marine applications. These V6 outboard motors, typically featuring fuel injection and electronic ignition, deliver power ranging from 200 to 250 horsepower. While specific production years are not detailed, this guide applies to a broad range of models identified by serial numbers, ensuring comprehensive support for these robust Yamaha engines. This Service Repair Manual provides essential information for the maintenance and repair of your Yamaha outboard motor. It details scheduled maintenance, fluid capacities, lubrication points, and comprehensive troubleshooting procedures. Owners, mechanics, and technicians will find the technical specifications and step-by-step guidance invaluable for ensuring the longevity and optimal performance of their Yamaha 225G, 250B, and L250B outboard engines.