This manual covers the Yamaha 9.9ELG outboard motor, produced likely in 1988 as part of its first generation. Engineered for reliability and performance, this 2-stroke, water-cooled motor delivers 9.9 horsepower and utilizes a CDI ignition system for efficient operation. Its robust design and quality construction are characteristic of Yamaha's commitment to durable marine propulsion. This professional-level service repair maintenance manual provides comprehensive guidance for owners and technicians. It details disassembly, repair, assembly, and inspection procedures, supported by exploded diagrams for clarity. Essential information on maintenance schedules, technical specifications, and troubleshooting is included, enabling effective upkeep and repair to ensure the optimal performance and longevity of your Yamaha 9.9ELG outboard motor.