This manual covers the Yamaha 115ETXN outboard motor, manufactured in 1984. This two-stroke gasoline-powered marine propulsion unit delivers 115 horsepower and features an outboard drive system. Engineered for reliability and performance, the Yamaha 115ETXN is designed to provide dependable service in marine applications. Its robust construction and proven technology ensure efficient operation for various boating needs. The scope of this Factory Service Repair Maintenance Manual is comprehensive, providing detailed information for owners, mechanics, and technicians. It includes step-by-step instructions, periodic inspection and adjustment schedules, and troubleshooting guidance for the fuel system, power unit, lower unit, bracket unit, and electrical system. The manual also contains general information, technical specifications, and diagnostic procedures, supported by detailed wiring diagrams, circuit diagrams, illustrations, photos, and exploded views to facilitate accurate maintenance and repair.