This manual covers the Yamaha 40ESRW outboard motor, manufactured in 1998. This 40 horsepower, 3-cylinder, naturally aspirated, carbureted outboard motor features a 703 cc displacement and a water-cooled system. Designed for marine applications, it offers reliable performance with its CDI ignition and outboard lower unit transmission featuring a 2.00:1 gear ratio. The motor comes with a 20-inch long shaft and has an approximate weight of 170 lbs, making it a robust choice for various watercraft. This comprehensive Service Repair Maintenance Manual in English provides detailed information for the upkeep and repair of your Yamaha 40ESRW. It includes step-by-step procedures, exploded diagrams, and technical specifications to assist owners, mechanics, and technicians. Key areas covered include lubrication requirements, such as the 10.1 oz gearcase oil capacity and recommended oil type, as well as maintenance intervals for initial break-in service and routine upkeep. The manual is bookmarked and searchable, ensuring efficient access to all necessary information for maintaining optimal performance and longevity.