This manual covers the Yamaha 9.9ELG outboard motor, manufactured in 1988. Designed for marine propulsion, this gasoline-powered outboard motor delivers 9.9 horsepower and operates reliably in marine environments. Its robust engineering ensures dependable performance for a variety of watercraft applications. This Factory Service Repair Maintenance Manual in English provides comprehensive guidance for maintaining and repairing your Yamaha 9.9ELG. It details general information, periodic inspections and adjustments, fuel system, power unit, lower unit, bracket unit, electrical system, specifications, and troubleshooting. With step-by-step instructions, detailed diagrams including wiring and circuit schematics, illustrations, photos, and exploded views, this manual is an essential resource for owners and technicians to ensure optimal performance and longevity of the outboard motor.