This comprehensive service, repair, and maintenance manual is specifically designed for the 1986 Yamaha 25ESJ outboard motor. It offers a detailed and user-friendly guide for mechanics, providing step-by-step instructions for every disassembly, repair, assembly, and inspection operation. The manual's organization is intuitive, featuring exploded diagrams before each disassembly section to ensure clear identification of the correct procedures. This allows for easy navigation and efficient troubleshooting. Each chapter delves into the intricacies of the motor, encompassing all aspects from basic maintenance to advanced repairs. With its thorough coverage and readily accessible information, this manual serves as an indispensable resource for anyone seeking to maintain or repair their 1986 Yamaha 25ESJ outboard motor.

The Yamaha Outboard 25ESJ is a reliable and durable 25 horsepower four-stroke outboard motor designed for smaller boats. This model is part of the Yamaha "ES" series, known for its fuel efficiency and low emissions. The 25ESJ features a single-cylinder, air-cooled engine with an electric starting system, making it convenient to start and operate. The compact and lightweight design ensures easy installation and handling, making it ideal for a variety of boating activities, such as fishing, waterskiing, and recreational cruising. The 25ESJ comes equipped with a manual tilt system for easy storage and transportation, as well as a variety of safety features, including an emergency stop switch and a low-oil pressure sensor. The Yamaha 25ESJ is known for its smooth and quiet operation, thanks to its advanced engine technology and low vibration design. The motor is also designed for ease of maintenance, with readily accessible components and straightforward servicing procedures. This ensures that the 25ESJ provides long-lasting performance and reliability, requiring minimal downtime for maintenance. The 25ESJ's fuel-efficient design helps reduce operating costs, while its low emissions contribute to a cleaner environment. With its combination of power, efficiency, and reliability, the Yamaha 25ESJ is a popular choice for both recreational boaters and professionals who need a dependable and versatile outboard motor for their smaller vessels.