This Service, Maintenance, and Repair Manual covers Mercury 2-stroke outboard motors, specifically addressing models from 2001 through 2009. It encompasses a wide range of engine configurations, including 1-4 cylinder and V6 engines, with horsepower ratings from 2.5 to 250HP. The manual also includes coverage for Optimax models, designed for reliability and performance on the water. Its comprehensive nature ensures that owners and technicians have access to the detailed information required to keep these robust marine engines operating at their peak. The purpose of this manual is to provide authoritative guidance for all aspects of servicing Mercury outboard motors. It details procedures for general maintenance, tune-ups, and in-depth repairs across various systems, including fuel, ignition, electrical, lubrication, and cooling. With 681 pages of content, it features step-by-step instructions and exploded views to facilitate understanding. The manual covers electrical systems extensively, including wiring diagrams, and provides essential information for troubleshooting and ensuring the longevity of your Mercury outboard motor.