This manual covers the Johnson Evinrude 4.0 Hp outboard motor manufactured between the years 1956 and 1970. Designed for reliable performance and durability, these engines represent a significant era in marine propulsion. Their robust construction and straightforward engineering have made them a popular choice for various boating applications, from fishing to general recreational use. This comprehensive guide ensures that the inherent quality and longevity of your Johnson Evinrude 4.0 Hp are maintained throughout its operational life. The purpose of this service manual is to provide detailed instructions and technical information necessary for the proper maintenance, troubleshooting, and repair of your Johnson Evinrude 4.0 Hp outboard motor. It includes essential procedures, diagnostic techniques, specifications, and safety guidelines, catering to both experienced technicians and owners seeking to understand their engine better. By following the information contained within, you can ensure optimal performance, efficiency, and safety for your marine craft.