This Service Repair Manual covers the Yamaha 9.9C and 15C outboard motors manufactured in 2004 and 2005. These gasoline-powered, 2-stroke outboard motors are designed for marine propulsion, offering reliable performance for a variety of watercraft. Yamaha Motor Corporation is renowned for its engineering quality and the durability of its products, ensuring these outboard motors are built to last and provide consistent power on the water.

This comprehensive manual provides essential information for maintaining and repairing your Yamaha outboard motor. It details routine maintenance procedures, troubleshooting common issues, and offers in-depth technical specifications. By following the guidelines within this manual, owners, mechanics, and technicians can ensure the optimal performance, longevity, and safety of the 9.9C and 15C models.