The 1990 Yamaha 25ELD Outboard is a 2-cylinder, 2-stroke outboard motor designed for reliable marine propulsion. This water-cooled engine delivers 25 horsepower and utilizes a gasoline fuel mixture at a 25:1 oil-to-gasoline ratio. Engineered for durability and performance, this Yamaha outboard represents a robust solution for various boating applications, emphasizing consistent power delivery and operational efficiency. This Service Repair Maintenance Manual provides comprehensive guidance for the 1990 Yamaha 25ELD Outboard. It covers all essential aspects of maintenance, repair, and inspection, including detailed procedures for disassembly and assembly. The manual is designed to assist owners, technicians, and mechanics in effectively maintaining the optimal performance and longevity of their Yamaha outboard motor.