This manual covers the Yamaha 2.5HP Outboard Motor, manufactured for model years 2003 through 2006. Designed for reliable marine propulsion, this 4-stroke, 1-cylinder outboard motor features a carburettor fuel system, representing Yamaha's commitment to engineering quality and dependable performance on the water. Its robust construction and efficient design make it a suitable choice for a variety of small watercraft applications. The purpose of this factory workshop manual is to provide comprehensive guidance for the maintenance and repair of your Yamaha 2.5HP Outboard Motor. It includes detailed information on general operations, technical specifications, periodic inspections and adjustments, and specific procedures for the fuel system, power unit, lower unit, bracket unit, and electrical system. Furthermore, this manual offers essential troubleshooting advice to assist owners, mechanics, and technicians in effectively servicing and maintaining the motor to ensure optimal functionality and longevity.