This manual covers Yamaha outboard motors manufactured between 1984 and 1996, encompassing a wide range of models from 2HP to 250HP, including both 2-stroke and 4-stroke engines. These outboard motors are renowned for their robust engineering and reliability, making them a trusted choice for various marine applications. This comprehensive guide is designed to support owners and technicians in maintaining and repairing these dependable power units, ensuring optimal performance and longevity on the water. The purpose of this manual is to provide detailed instructions and technical information for the repair, parts lookup, and routine maintenance of Yamaha outboard motors. It includes extensive coverage of general information, engine specifications, fuel and lubrication systems, electrical components, and advanced troubleshooting techniques. Whether you are performing routine service or complex repairs, this resource offers the essential knowledge required to effectively service and maintain your Yamaha outboard motor, ensuring it remains in peak operating condition.