This manual covers the Yamaha 15 HP Outboard, produced between 1984 and 1992. These 2-stroke, 2-cylinder outboard motors feature a displacement of 232 cc and deliver 15 horsepower. Designed for reliable performance on various watercraft, the Yamaha 15 HP Outboard is known for its robust engineering and straightforward operation. Key specifications include carburetor fuel induction, CDI ignition, and a water-cooled system utilizing raw water. Transmission options provide forward, neutral, and reverse gears, with shaft lengths available in short or long configurations. This Service Repair Workshop Manual provides comprehensive guidance for maintaining and repairing your Yamaha 15 HP Outboard. It details essential maintenance procedures, including recommended oil types, oil capacity, spark plug gap specifications, and fuel mixture ratios. Technical specifications cover engine configuration, performance data, and electrical system details. Safety guidelines and troubleshooting information are also included to assist owners, mechanics, and technicians in ensuring the optimal performance and longevity of the outboard motor.