This manual covers the Yamaha 40V, 50H, 40U, and 50U Series outboard motors produced between 1996 and 1997. These 2-stroke, 3-cylinder outboard motors offer a horsepower range from 40 to 50 HP and feature a carbureted fuel system and water-cooling. Designed for marine applications, these engines are known for their robust construction and reliable performance on the water, suitable for a variety of boating needs. The purpose of this Service & Repair Manual is to provide comprehensive guidance for the maintenance, repair, and troubleshooting of your Yamaha outboard motor. It details essential procedures, technical specifications, and diagnostic information to ensure optimal performance and longevity. This manual is an indispensable resource for owners, technicians, and mechanics, offering clear instructions and diagrams to facilitate efficient upkeep and problem resolution for the covered models.