This manual covers the Yamaha F300 LF300 F350 LF350 outboard motors manufactured in 2008 and 2009. These high-performance outboard motors are engineered for reliability and exceptional power, designed to meet the demanding needs of marine applications. Their robust construction and advanced technology ensure efficient operation and durability for a wide range of boating activities. The purpose of this comprehensive service repair factory manual is to provide detailed information for the maintenance, service, and repair of these Yamaha outboard motors. It includes extensive coverage of general information, specifications, technical features, rigging, electrical and fuel systems, power unit, lower unit, and bracket unit. This manual is an essential resource for owners, technicians, and mechanics to ensure the optimal performance and longevity of their Yamaha F300 LF300 F350 LF350 outboard motors.