This manual covers the Yamaha F250 and LF250 outboard motors manufactured for the 2009 and 2010 model years. These four-stroke outboard motors are designed for marine propulsion, offering robust performance and reliability. Engineered by Yamaha Motor Corporation, these units represent a significant advancement in outboard motor technology, providing powerful and efficient operation for a wide range of boating applications. The F250 and LF250 models are known for their advanced fuel injection systems and durable construction, ensuring dependable service in demanding marine environments.

The purpose of this factory service manual is to provide comprehensive guidance for the maintenance, repair, and servicing of the Yamaha F250 / LF250 outboard motors. It details essential procedures, technical specifications, troubleshooting guides, and safety information necessary for owners, technicians, and mechanics. Covered topics include engine specifications, lubrication requirements, electrical systems, fuel systems, and recommended maintenance schedules. By following the instructions within this manual, users can ensure their Yamaha outboard motor operates at peak performance and longevity.