This manual covers the 1989 Yamaha 150ETXF Outboard Motor, a gasoline-powered unit designed for reliable performance. Engineered for durability and efficiency, this outboard motor represents a commitment to quality in marine propulsion. Its robust construction and advanced design ensure optimal operation for various boating applications. This comprehensive Factory Service Repair Maintenance Manual provides detailed instructions and technical guidance for the repair, maintenance, and diagnostics of your Yamaha 150ETXF. It includes step-by-step procedures, detailed wiring and circuit diagrams, illustrations, photos, and exploded views covering all major systems such as the fuel system, power unit, lower unit, bracket unit, and electrical system. This manual is an essential resource for owners, mechanics, and technicians seeking to maintain and repair the outboard motor.