This Service Repair Workshop Manual covers the Mercury 40hp, 50hp, and 60hp EFI Outboard Motors manufactured between 2002 and 2004. These water-cooled, fuel-injected engines are engineered for reliable performance, offering a power output range from 40 to 60 horsepower. The outboard gearcase transmission, with specific gear ratios tailored to each horsepower model, ensures efficient power delivery for a variety of marine applications. This manual provides detailed information to understand and maintain the quality and reliability of your Mercury outboard motor. The purpose of this comprehensive manual is to provide essential guidance for the maintenance, repair, and troubleshooting of your Mercury outboard motor. It includes step-by-step instructions, hundreds of detailed photos, and diagrams to assist owners, mechanics, and technicians. Coverage encompasses everything from routine service procedures to complete overhauls, ensuring that all aspects of the engine and transmission are addressed. This English-language resource is designed to help you keep your motor in optimal working condition.