The Yamaha 9.9LJ, a 1986 model, represents a robust and reliable outboard motor designed for a variety of marine applications. This 2-stroke, 2-cylinder engine boasts a displacement of 232 cc, delivering a dependable 9.9 horsepower. Its water-cooled system, CDI ignition, and carburetor fuel delivery ensure efficient and consistent performance on the water. Engineered for durability and ease of operation, the Yamaha 9.9LJ is a testament to quality marine propulsion, suitable for both recreational boating and professional use. This comprehensive service repair maintenance manual provides essential information for the Yamaha 9.9LJ outboard motor. It covers critical maintenance procedures, including gearcase lubrication with specific oil types and capacities, and the recommended 50:1 fuel-to-oil ratio for pre-mixing. Detailed technical specifications, such as engine type, displacement, and recommended spark plug specifications and gap, are included. Furthermore, the manual outlines important service intervals, like the annual replacement of the water pump impeller, to ensure the longevity and optimal performance of your Yamaha motor.