This manual covers the Yamaha 55 HP 2-Stroke Outboard, manufactured between 1989 and 1995. These outboards are known for their robust engineering and reliable performance, making them a trusted choice for various marine applications. The 55 HP engine configuration, utilizing proven 2-stroke technology, delivers dependable power and efficiency. This service manual provides comprehensive information to ensure the longevity and optimal operation of your Yamaha outboard. The purpose of this Factory Service Repair Manual is to provide detailed guidance for maintenance, repair, and troubleshooting of the Yamaha 55 HP 2-Stroke Outboard. It includes essential information on routine maintenance procedures, lubrication, cooling systems, and in-depth troubleshooting guides. Furthermore, the manual offers step-by-step instructions for major repairs, including the powerhead, lower unit, electrical systems with wiring diagrams, trim and tilt, remote control, and starter systems. This resource is invaluable for owners, mechanics, and technicians seeking to maintain and repair their vessel's propulsion system effectively.