This manual covers the Johnson Evinrude 25 HP outboard motor, spanning production years from 1965 through 1978. Designed for reliable performance and durability, these motors are known for their robust engineering and suitability for a wide range of boating applications. This comprehensive guide is essential for understanding the intricacies of your Johnson Evinrude 25 HP, ensuring its continued operational excellence. The purpose of this service manual is to provide detailed instructions and technical information necessary for the maintenance, repair, and troubleshooting of your Johnson Evinrude 25 HP outboard motor. It includes essential procedures, diagnostic steps, and specifications to assist owners, technicians, and mechanics in keeping the motor in optimal condition. By following the guidelines within this manual, users can effectively address potential issues and perform routine maintenance, thereby maximizing the lifespan and performance of their equipment.