This manual covers the Yamaha 9.9ELD outboard motor, manufactured in 1990. This 2-stroke, 9.9 horsepower gasoline engine is engineered for marine propulsion, offering reliable performance for a variety of watercraft. Its robust construction and efficient design make it a dependable choice for recreational and professional use on the water. This comprehensive service, repair, and maintenance manual provides detailed, step-by-step procedures for disassembly, repair, assembly, and inspection of your Yamaha 9.9ELD. It includes exploded diagrams to aid in understanding component relationships. This English-language resource is designed to assist owners, mechanics, and technicians in performing essential maintenance and repairs, ensuring the longevity and optimal performance of the outboard motor.