This Factory Service Repair Manual covers the Johnson Evinrude 225 HP Outboard engine, produced between 1973 and 1990. These V6 outboard engines, known for their robust engineering and reliable performance, deliver 225 horsepower and feature carbureted fuel systems. This manual is designed to provide comprehensive information for maintaining and servicing these powerful marine engines, ensuring their continued operational excellence on the water. The purpose of this manual is to serve as an authoritative resource for owners, technicians, and mechanics. It details essential maintenance procedures, including tune-up guidelines and lubrication schedules, alongside in-depth troubleshooting guides and common repair solutions. With step-by-step repair procedures, technical illustrations, wiring diagrams, and diagnostic information for various systems such as the powerhead, gearcase, and power trim/tilt, this English-language manual equips users with the knowledge necessary for effective upkeep and repair.