This Service & Repair Manual provides comprehensive information for the 1997 Yamaha 25V3 / 30V outboard motors. These gasoline-powered, water-cooled outboard motors are designed for marine applications, offering 25 HP and 30 HP performance options. The manual covers various model variants including the 25MLHV3, 25MSHV3, 30ELHV, 30ELRV, 30ESRV, 30MLHV, and 30MSHV. Yamaha is recognized for its engineering quality and reliability in marine propulsion. This English-language manual, spanning 162 pages, is intended to assist owners, mechanics, and technicians in maintaining and repairing their Yamaha outboard motors. It details general information, specifications, periodic inspection and adjustment procedures, fuel system, power unit, lower unit, bracket unit, electrical unit, and troubleshooting guidance. By following the procedures outlined, users can ensure the optimal performance and longevity of their marine engines.