This workshop repair manual covers Johnson Evinrude Outboard Motors manufactured between 1956 and 1970, representing the Early to Mid Outboard Era. These 2-stroke engines, available in 1 and 2 cylinder configurations, range from 1.5 to 40 horsepower, encompassing specific models such as the 1.5, 3.0, 4.0, 5.0, 5.5, 6.0, 7.5, 9.5, 10, 15, 18, 20, 25, 28, 30, 33, 35, and 40 HP variants. Designed for reliable marine propulsion, these motors were a staple in their time, known for their robust engineering and straightforward operation. This comprehensive manual provides detailed guidance for maintenance, repair, and troubleshooting of your Johnson Evinrude outboard motor. It includes essential information on routine maintenance procedures such as tune-ups, lubrication, and synchronization adjustments, alongside in-depth coverage of component overhauls for the power head, fuel system, ignition and electrical systems, gearcase lower unit, and hand starter. Furthermore, the manual contains wiring diagrams, a troubleshooting guide, and quick reference data, equipping owners, mechanics, and technicians with the necessary knowledge to ensure optimal performance and longevity of these classic engines.