This Service Repair Workshop Manual provides comprehensive information for the Yamaha F225A / FL225A outboard engines. These 4-stroke, V6 engines offer 225 horsepower with a displacement of 3.35 L (204.4 ci) and feature Electronic Fuel Injection (EFI) for efficient operation. Designed for demanding marine applications, these engines are engineered for reliability and performance. This manual covers multiple model years, identified by serial numbers, ensuring broad applicability for owners and technicians. The purpose of this manual is to serve as a definitive guide for the maintenance, repair, and servicing of your Yamaha outboard engine. It includes detailed sections on general information, specifications, periodic checks and adjustments, fuel system maintenance, power unit, lower unit, bracket unit, and electrical systems. A thorough troubleshooting section is also provided to assist in diagnosing and resolving potential issues. This English-language manual is designed to empower owners, mechanics, and technicians with the knowledge necessary to keep the Yamaha F225A / FL225A engines operating at peak condition.