This comprehensive service repair manual provides detailed instructions and guidance for maintaining and repairing Mercury Mariner Outboard 200 and 225 Optimax models with direct fuel injection. It covers all models with serial numbers US: 0G386496 and above, produced from 2006 onwards. Designed for both DIY enthusiasts and experienced mechanics, the manual offers step-by-step procedures based on complete machine disassembly, supported by hundreds of clear photographs and illustrations. The manual covers a wide range of critical components and systems, including essential information, electrical systems, fuel systems, powerhead, mid-section, lower unit, and attachment/control linkage. This detailed approach ensures you have the necessary knowledge to confidently perform any service or repair task.

The Mercury Mariner Outboard 200 and 225 HP Optimax models are high-performance outboard motors renowned for their power and efficiency. Introduced in the late 1990s, the Optimax line revolutionized outboard technology with its innovative direct fuel injection (DFI) system. This system, unlike traditional carburetors, delivers fuel directly into the combustion chamber, resulting in precise fuel metering, improved fuel economy, and reduced emissions. The 200 and 225 HP models were offered in various configurations, including tiller and remote steering options, catering to diverse boating needs. These powerful outboard motors were designed for larger boats, typically ranging from 17 to 25 feet, and saw widespread use in applications like fishing, recreational cruising, and even competitive racing. Their smooth operation and impressive acceleration made them popular choices for both experienced boaters and enthusiasts. Despite their age, these engines remain sought-after due to their durability and performance capabilities. However, like any complex piece of machinery, regular maintenance and repairs are crucial for continued reliable operation. This is where a dedicated service and repair manual becomes indispensable, providing detailed insights into the engine's intricate workings, troubleshooting procedures, and essential maintenance steps.