This manual covers the 1990 Yamaha 15ESD Outboard Motor, a 2-stroke gasoline-powered marine propulsion unit designed for outboard drive applications. Yamaha is renowned for its engineering quality and reliability, and this model is built to deliver dependable performance on the water. The detailed procedures within this guide are presented in a step-by-step format, ensuring clarity for users. The purpose of this Service Repair Maintenance manual is to provide comprehensive information for the upkeep and repair of your Yamaha 15ESD outboard motor. It includes detailed explanations of all disassembly, repair, assembly, and inspection operations, accompanied by exploded diagrams to aid in understanding. This English language resource, presented in a bookmarked and searchable format, serves as an essential reference for owners and technicians alike, ensuring the longevity and optimal functioning of the motor.