This manual covers the 1990 Yamaha 15ESD Outboard, a 15 horsepower, 2-stroke gasoline engine designed for marine propulsion. Yamaha is renowned for its engineering quality and reliability, ensuring consistent performance for your boating needs. This outboard motor represents a commitment to durable design and efficient operation. This Factory Service Manual provides comprehensive guidance for the 15ESD Outboard. It details all disassembly, repair, assembly, and inspection operations, including step-by-step procedures and exploded diagrams. The manual is presented in English and is bookmarked and searchable, making it an essential resource for owners and technicians to maintain and repair the vehicle effectively.