This manual covers the Yamaha C80 HP outboard motor, manufactured in 1997. Designed for marine propulsion, this 80 horsepower, 2-stroke gasoline engine represents a robust and reliable solution for watercraft. Its engineering is focused on delivering dependable performance, with features such as an electric starter, water-cooled system, CDI ignition, and a carbureted fuel system, all contributing to its operational efficiency. The outboard drive system ensures effective power transfer for various marine applications. The purpose of this English-language service repair manual is to provide comprehensive guidance for the maintenance and repair of your Yamaha C80 HP outboard motor. It details all disassembly, repair, assembly, and inspection operations, enhanced with exploded diagrams to clarify each step. The manual is fully bookmarked and searchable, allowing for quick access to information on all aspects of the motor. Owners, mechanics, and technicians will find this resource invaluable for ensuring the longevity and optimal performance of their marine propulsion unit.