This manual covers the Yamaha F100B and F100C Outboard Engines manufactured from 2002 onwards. Designed for comprehensive service, repair, and maintenance, these engines are built with Yamaha's renowned engineering quality and reliability. This service and repair manual provides in-depth information to ensure optimal performance and longevity of your outboard engine. The purpose of this English-language service and repair manual is to equip owners, mechanics, and technicians with the knowledge necessary for all aspects of maintenance and repair. It includes detailed, step-by-step instructions, accompanied by pictures and wiring diagrams, covering routine maintenance, all repair jobs, and technical specifications. By utilizing this manual, users can efficiently perform their own servicing, maintenance, and repairs, leading to a better understanding of their engine's components and procedures.