This repair manual covers Johnson Evinrude 2-Stroke Outboards manufactured between 1973 and 1990. These water-cooled outboard engines, available in various horsepower ratings from 2 to 40, are designed for reliable marine propulsion. Specific models such as Excel-4, Ultra-4, and 4HP-Deluxe are also addressed, reflecting the robust engineering and performance characteristic of this product line. This comprehensive English-language repair manual provides detailed guidance for maintaining and servicing your Johnson Evinrude outboard. It includes essential information on general procedures, engine removal and installation, fuel and lubrication systems, cooling, steering, and electrical systems. Furthermore, advanced troubleshooting sections and a parts catalog are included to assist with diagnostics and repairs, ensuring your engine operates at peak performance.