This manual covers the Yamaha 150ETXD Outboard, a 2-stroke, water-cooled outboard motor from 1990. Featuring an inline 4-cylinder configuration with a displacement of 1477 cc and delivering 150 horsepower, this model is designed for reliable marine propulsion. Its robust engineering and performance characteristics make it a dependable choice for various boating applications. The first generation of this model, produced in the early 1990s, embodies Yamaha's commitment to quality and durability in outboard motor technology. This comprehensive Service Repair Maintenance Manual in English provides detailed guidance for the Yamaha 150ETXD Outboard. It includes procedures for disassembly, repair, assembly, and inspection, supported by exploded diagrams to aid understanding. The manual covers essential maintenance aspects such as recommended fuel and oil types, fluid capacities, and electrical system details like its CDI ignition and alternator. Its searchable, digital format ensures efficient access to information, empowering owners, mechanics, and technicians to effectively maintain and repair the outboard motor, ensuring its continued optimal performance and longevity.