This official factory service repair manual covers the Johnson Evinrude 120 HP Outboard engine models produced between 1973 and 1990. These robust outboard engines are known for their reliable performance and are designed for a wide range of marine applications. The 120 HP models feature a V4 engine configuration and a carbureted fuel system, delivering dependable power for boating enthusiasts. This comprehensive manual provides detailed instructions and specifications necessary for the maintenance, repair, and troubleshooting of your Johnson Evinrude 120 HP Outboard. It includes essential information on routine maintenance procedures, lubrication requirements, and recommended service intervals. With hundreds of pages of content, including diagrams and photos, this manual serves as an indispensable resource for owners and technicians seeking to ensure the optimal performance and longevity of their engine.