This manual covers the Yamaha 9.9LJ Outboard Motor, manufactured in 1986. Designed for marine propulsion, this 9.9 horsepower outboard motor represents a commitment to engineering quality and reliability. Its robust construction and efficient design make it a dependable choice for various boating applications, offering a superior user experience through its unique selling points. This Factory Service Repair Maintenance Manual provides comprehensive guidance for the Yamaha 9.9LJ Outboard Motor. It details general information, periodic inspection and adjustments, fuel system, power unit, lower unit, bracket unit, and electrical system maintenance. With step-by-step instructions, illustrations, photos, exploded views, detailed wiring diagrams, and troubleshooting diagnostics, this manual is an essential resource for owners, mechanics, and technicians to effectively maintain and repair the outboard motor.