This service manual covers the Johnson Evinrude 4 HP outboard motor, spanning production years from 1965 through 1978. Designed for reliable performance and durability, these engines have been a trusted choice for various marine applications. This manual provides comprehensive information to ensure the continued optimal operation and longevity of your Johnson Evinrude 4 HP motor. The purpose of this manual is to serve as a complete guide for maintenance, repair, and troubleshooting. It details essential procedures, technical specifications, and safety guidelines necessary for owners and technicians. By following the instructions within this manual, users can effectively maintain their Johnson Evinrude 4 HP outboard motor, ensuring its reliability and performance for years to come.