This manual covers the 1987 Yamaha 9.9SH outboard motor, a gasoline-powered, internal combustion engine designed for boating. Renowned for its engineering quality and reliability, this outboard motor provides dependable performance for a variety of aquatic activities. Its robust construction ensures longevity and efficient operation, making it a trusted choice for recreational and professional use on the water. This Factory Service Manual in English provides comprehensive guidance for maintaining and repairing your 1987 Yamaha 9.9SH outboard motor. It details general information, periodic inspections and adjustments, fuel system, power unit, lower unit, bracket unit, and electrical system. With step-by-step instructions, detailed illustrations, photos, exploded views, and wiring diagrams, this manual is an essential resource for owners, mechanics, and technicians to ensure optimal performance and longevity of the outboard motor.