This service manual covers Johnson Evinrude Outboard Motors manufactured between 1973 and 1990, encompassing multiple generations. These engines are known for their robust engineering and reliability, offering a range of power from 2 HP to 40 HP. Designed for various marine applications, they typically feature 2-stroke, water-cooled engines and a direct drive system with Forward, Neutral, and Reverse gear selection. This manual provides comprehensive information to ensure the optimal performance and longevity of your outboard motor. The purpose of this English-language service manual is to provide owners, mechanics, and technicians with all the necessary information for maintenance, repair, and troubleshooting. It includes detailed procedures for routine maintenance, tune-ups, lubrication, fuel system service, electrical system service, powerhead service, gearcase service, and starter service. With clear instructions, easy-to-read text, and numerous high-quality pictures, this manual offers all the information needed to perform procedures correctly, from basic checks to complex repairs, ensuring the continued operational integrity of your Johnson Evinrude outboard motor.