This workshop service manual provides comprehensive repair and maintenance information for the Mercury Mariner outboard engine, covering model years 2002 through 2007. Engineered for reliability and performance, these 4-stroke, naturally aspirated engines feature Electronic Fuel Injection (EFI) and a Capacitor Discharge Ignition (CDI) system, delivering up to 175 HP. The water-cooled design ensures optimal operating temperatures, while the outboard drive system offers efficient propulsion. This manual is designed to assist owners and technicians in understanding the intricacies of the Mariner outboard, ensuring its continued optimal operation. The purpose of this English-language workshop manual is to serve as a definitive guide for the repair and maintenance of your Mercury Mariner outboard. Within its 631 pages, you will find detailed procedures for servicing the engine, fuel system, lubrication, and electrical components, including specific guidance on recommended oil types and capacities. It also includes troubleshooting guides for common issues, diagnostic procedures, and technical specifications essential for proper upkeep. By following the instructions and recommendations outlined herein, users can effectively maintain and repair their Mercury Mariner engine, ensuring longevity and peak performance.