This manual covers Yamaha Outboard models 50G, 60F, 70B, 75C, and 90A. These engines are engineered for reliable performance on the water, featuring robust construction and advanced systems designed to meet the demands of various marine applications. Their design prioritizes efficiency and durability, making them a trusted choice for boaters seeking dependable power. The purpose of this Factory Service Repair Manual is to provide comprehensive guidance for the maintenance, repair, and troubleshooting of your Yamaha Outboard. It includes detailed procedures, technical specifications, and essential safety information. Whether you are performing routine maintenance or addressing complex issues, this manual serves as an indispensable resource for owners and technicians alike, ensuring your engine operates at peak performance.