This manual covers the Yamaha 50EJRX outboard motor, produced in 1999. This water-cooled, 50 horsepower engine features a CDI ignition system, electric start, and an underwater exhaust. It is designed for gasoline fuel and utilizes a remote steering system with power trim and tilt capabilities. The engine is oil-injected or can use pre-mix, depending on the specific model variation. This factory service repair maintenance manual provides comprehensive information for this robust and reliable marine propulsion system. The purpose of this English-language manual is to provide detailed guidance for the maintenance and repair of the Yamaha 50EJRX. It includes step-by-step procedures, exploded diagrams preceding disassembly sections, and essential technical specifications covering all aspects of the motor. Owners, mechanics, and technicians will find information on routine maintenance, fluid capacities, and troubleshooting. This searchable and bookmarked document ensures that users can efficiently access the information needed to keep their Yamaha outboard motor in optimal operating condition.