The Mercury Mariner Outboard 200/225 OPTIMAX Service Repair Manual provides comprehensive guidance for servicing and repairing Mercury Mariner Outboard engines with DIRECT FUEL INJECTION, specifically those with serial numbers 0G386496 and above. This detailed manual contains easy-to-understand instructions and high-quality diagrams, making it an invaluable resource for both experienced mechanics and DIY enthusiasts.

The manual is organized into seven sections, covering a wide range of topics. Section 1 outlines important information, specifications, maintenance procedures, general information, and outboard installation details. Section 2 focuses on electrical systems, including ignition, charging and starting systems, timing, synchronizing and adjusting procedures, and detailed wiring diagrams. Section 3 delves into the fuel system, covering components like the fuel pump, direct fuel injection, oil injection, and emission systems. Section 4 provides a thorough examination of the powerhead, including the cylinder block assembly and cooling system. Section 5 explores the mid-section, focusing on clamp/swivel brackets, the drive shaft housing, and power trim. Section 6 details the lower unit, offering information on both right and left-hand rotations. Finally, Section 7 covers attachments and control linkage for a comprehensive understanding of the engine's overall operation.

The Mercury Mariner Outboard 200/225 OPTIMAX is a powerful and reliable outboard motor that was produced by Mercury Marine from 2001 to 2005. It is a two-stroke, direct-injection engine with a displacement of 2.5 liters. The 200 hp and 225 hp versions were both available in both long and short shaft configurations. The OPTIMAX models offered several innovations, including a patented electronically-controlled fuel injection system, a water-cooled exhaust system, and a lightweight magnesium lower unit. This combination of features allowed the OPTIMAX engines to deliver impressive performance and fuel economy while remaining relatively light and compact. The engines were designed for a variety of applications, including fishing, cruising, and watersports, and were particularly popular for their smooth operation and impressive power output.

The Mercury Mariner 200/225 OPTIMAX engines boast a number of commendable features. The electronically-controlled fuel injection system ensured efficient fuel delivery and precise engine management, contributing to optimal performance and fuel economy. The water-cooled exhaust system significantly reduced noise and emissions, creating a more pleasant boating experience. The lightweight magnesium lower unit, combined with a robust design, provided exceptional durability and performance even in challenging conditions. With its impressive power output, fuel economy, and innovative features, the Mercury Mariner 200/225 OPTIMAX solidified its position as a reliable and desirable choice for boaters seeking a powerful and versatile outboard motor.