This manual covers the Mercury Mariner 150, 175, and 200 EFI Outboard models, starting from the 2002 model year. These fuel-injected, water-cooled engines are designed for reliable performance, featuring electronic fuel injection and oil injection systems. Their robust engineering ensures durability for various marine applications. This comprehensive Service Repair Manual provides detailed information for maintenance, servicing, repair, and rebuilding. It includes essential technical specifications, diagnostic procedures, and troubleshooting guides. With clear, step-by-step instructions, zoomable illustrations, exploded views, and color wiring diagrams, this manual is an indispensable resource for owners and technicians seeking to maintain optimal performance and longevity of their Mercury Mariner outboard engines.