This Factory Service Manual provides comprehensive information for the Yamaha LF300CA outboard motor, manufactured from 2010 and newer. This powerful V6, 4-stroke, 4.2-liter DOHC engine delivers 300 horsepower, featuring Electronic Fuel Injection (EFI) and a Digital CDI ignition system for optimal performance and efficiency. Designed for demanding marine applications, the LF300CA is engineered for reliability and robust operation, offering advanced features such as Power Trim and Tilt and a water-cooling system. Its advanced design ensures a superior boating experience for a wide range of watercraft. The purpose of this manual is to serve as a definitive guide for the maintenance, repair, and servicing of your Yamaha LF300CA outboard motor. It covers essential procedures including disassembly, repair, assembly, and inspection, supported by detailed exploded diagrams. This English-language manual is an indispensable resource for owners, technicians, and mechanics, providing the technical specifications, troubleshooting guidance, and safety information necessary to keep the engine operating at peak performance and to ensure its longevity.