This service repair manual covers Johnson Evinrude Outboard Motors manufactured between 1973 and 1990. These robust engines, known for their reliability and performance, range in horsepower from 48 HP to 235 HP, encompassing a wide array of models designed for various marine applications. The manual provides comprehensive information on these 2-stroke engines, detailing their carbureted fuel systems, ignition configurations, and water-cooling mechanisms, ensuring you have the necessary knowledge to maintain and operate your Johnson Evinrude outboard. The purpose of this manual is to serve as an indispensable resource for both do-it-yourself enthusiasts and experienced mechanics. It offers detailed, step-by-step repair instructions, supported by hundreds of illustrations, covering everything from routine maintenance such as tune-ups and lubrication to complex component overhauls. Included are troubleshooting guides, wiring diagrams, and technical specifications to assist in diagnosing and resolving issues, ultimately enabling owners and technicians to keep their Johnson Evinrude outboard motors running optimally.