The Mercury Mariner 225 HP Pro Max, produced between 1992 and 2000, represents a robust V6 2-stroke outboard engine designed for demanding marine applications. With a displacement of 3.0 liters and advertised horsepower of 225 HP, this engine, part of the Pro Max Series, offers significant power and performance. Its engineering emphasizes reliability and efficiency, featuring a water-cooled system, CDI ignition, and various fuel induction options including carburetion and fuel injection depending on the model year. The engine is available in both right-hand and left-hand rotation configurations, with multiple gear ratio options to suit diverse boating needs. This Factory Service Repair Manual provides comprehensive guidance for the Mercury Mariner 225 HP Pro Max. It covers essential areas including detailed specifications, routine maintenance procedures, and troubleshooting advice. Owners, mechanics, and technicians will find in-depth information on all major systems, such as the electrical, ignition, charging, fuel, and cooling systems, as well as powerhead, mid-section, and lower unit components. The manual also includes specific sections on outboard installation, wiring diagrams, and propeller options, ensuring proper upkeep and repair to maintain the engine's optimal performance and longevity.