This manual covers the Yamaha 8LD outboard motor, manufactured in 1990. Designed for marine propulsion, this internal combustion engine delivers 8 horsepower. Yamaha is recognized for its engineering quality and reliability in producing robust marine equipment. This specific model exemplifies the company's commitment to providing dependable power for watercraft, ensuring efficient and effective operation on the water. The purpose of this Factory Service Repair Maintenance Manual is to provide comprehensive guidance for the Yamaha 8LD outboard motor. It details general information, periodic inspection and adjustments, fuel system, power unit, lower unit, bracket unit, and electrical system maintenance. The manual includes step-by-step instructions, detailed wiring and circuit diagrams, illustrations, photos, and exploded views. It also covers troubleshooting and diagnostics, empowering owners, mechanics, and technicians to effectively maintain, repair, and ensure the optimal performance and longevity of their marine propulsion system.