This Service Repair Maintenance Manual covers the Yamaha 40ELRU outboard motor, manufactured in 1996. This water-cooled, carbureted engine delivers 40 horsepower and is designed for marine applications. Built with Yamaha's renowned engineering quality, this outboard motor is recognized for its reliability and performance on the water, making it a dependable choice for various boating needs. This manual provides comprehensive guidance for maintaining and repairing your Yamaha 40ELRU. It details essential procedures, including lubrication requirements for 2-stroke oil and marine gear lubricant, recommended service intervals, and troubleshooting techniques. The information contained within is intended to assist owners, mechanics, and technicians in ensuring the optimal performance and longevity of the outboard motor.