This Service & Repair Manual covers Yamaha 6 HP and 8 HP outboard motors manufactured between 1997 and 1999, including models 6MLHV, 6MSHV, 8MLHV, 8MSHV, 6MLHW, 6MSHW, 8MLHW, 8MSHW, 6MLHX, 6MSHX, 8MLHX, and 8MSHX. These water-cooled outboard motors are designed for reliable performance in marine applications. This manual provides comprehensive information to ensure the optimal operation and longevity of your Yamaha outboard. The purpose of this manual is to provide detailed guidance for the maintenance, repair, and troubleshooting of your Yamaha outboard motor. It includes essential information on general procedures, technical specifications, periodic inspections and adjustments, fuel system, power unit, lower unit, bracket unit, and electrical systems. A dedicated chapter on trouble analysis offers solutions for common issues, empowering owners and technicians to maintain the vehicle effectively and safely.