This workshop service repair manual covers the Yamaha 150C V150C, manufactured from 2003 onwards. This gasoline-powered outboard engine, featuring a 150 horsepower V-engine configuration, is designed for reliable performance. The manual details essential aspects of the engine, including its ignition system, oil injection, and outboard gearcase specifications, ensuring comprehensive understanding for owners and technicians. This manual provides extensive guidance for maintaining and repairing your Yamaha outboard. It includes detailed procedures for all repairs, from mechanical to electrical, alongside troubleshooting guides, tuning and adjustment instructions, and wiring diagrams. With numerous illustrations and diagrams, this resource is designed to assist users in performing lubrication and maintenance, understanding service intervals, and utilizing the correct tools and techniques for optimal engine longevity and performance.