This manual covers the Mercury Mariner 225 HP Carb outboard motor, specifically models with serial numbers 0D280813 and above. This powerful V6, water-cooled, carbureted outboard motor delivers 225 horsepower and features a 3.0L displacement. Engineered for reliability and performance, this motor is designed to provide exceptional propulsion for a variety of marine applications. Its robust construction and proven technology ensure dependable operation on the water. The purpose of this comprehensive Service Repair Manual is to provide detailed information for the maintenance, repair, and servicing of your Mercury Mariner 225 HP Carb outboard motor. It includes essential data on engine specifications, lubrication, fuel and ignition systems, transmission, and electrical components. Furthermore, the manual outlines recommended maintenance schedules, troubleshooting procedures, and safety guidelines, including the use of the kill switch lanyard. This resource is invaluable for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their marine engine.