This manual covers Johnson Evinrude Outboard models from 1973 to 1990, specifically focusing on the 55 HP variants. These engines are known for their robust 2-stroke design, water-cooled systems, and reliable performance on the water. Engineered for durability and efficiency, these outboard motors have been a staple for recreational and professional boating for decades. This comprehensive service repair manual provides detailed information to ensure these engines continue to operate at peak performance. The purpose of this manual is to provide owners, technicians, and mechanics with the necessary information for the maintenance, repair, and troubleshooting of Johnson Evinrude 55 HP Outboard engines manufactured between 1973 and 1990. It includes detailed procedures for tune-ups, lubrication, and common issue diagnosis, covering areas such as starting problems, overheating, and fuel delivery. With hundreds of pages of detailed instructions and technical specifications, this manual serves as an essential guide for preserving the longevity and functionality of your outboard motor.