This manual covers the Yamaha 15 MSHC Outboard, a 2004 model year outboard motor. This 2-stroke engine features a 212 cc displacement, producing 15 horsepower, and utilizes a CDI ignition system with water-cooling. Its robust engineering is designed for reliable performance in marine applications. The outboard is equipped with a carburetor for fuel induction and a manual tilt system with manual trim adjustment, making it a versatile and dependable choice for various boating needs. The purpose of this English-language Service Repair Maintenance Manual is to provide comprehensive guidance for the disassembly, repair, assembly, and inspection of the Yamaha 15 MSHC Outboard. It includes detailed exploded view diagrams to aid in understanding component relationships. This manual is an essential resource for owners, mechanics, and technicians, offering the necessary information to ensure the proper maintenance and longevity of the outboard motor, covering critical aspects such as lubrication, fuel and oil specifications, and technical details.