This manual covers the Yamaha 15ESD outboard motor, manufactured in 1990. Engineered for reliable marine propulsion, this 15 horsepower, 2-stroke gasoline engine is designed for a variety of watercraft applications. Yamaha's commitment to quality ensures dependable performance for recreational and professional use. This comprehensive Factory Service Repair Maintenance Manual provides detailed instructions and specifications for maintaining and repairing your Yamaha 15ESD. It includes information on general maintenance, fuel system, power unit, lower unit, bracket unit, electrical system, and troubleshooting. With step-by-step instructions, detailed diagrams, and diagnostic coverage, this manual is an essential resource for owners and technicians to ensure optimal operation and longevity of the outboard motor.