The Yamaha F300, LF300, F350, and LF350 outboard motors, manufactured between 2008 and 2014, represent advanced four-stroke engine technology designed for marine applications. These powerful engines, available in 300 HP and 350 HP variants, are engineered for exceptional performance and reliability on the water. The LF models are specifically designed with counter-rotation capabilities, offering enhanced maneuverability and control for various boating needs. Their robust construction and innovative features underscore Yamaha's commitment to delivering high-quality, dependable marine propulsion systems. This comprehensive Full Service & Repair Manual provides essential guidance for the maintenance, repair, and troubleshooting of your Yamaha outboard motor. It contains detailed procedures, step-by-step instructions, and highly detailed exploded diagrams, all accompanied by clear photographs. The manual covers a wide range of topics, including technical specifications, diagnostic routines, and recommended maintenance schedules, ensuring that owners, mechanics, and technicians have the necessary information to keep these engines operating at peak performance and to address any potential issues effectively.