This service repair manual covers the Mercury Mariner 200 HP EFI 4-stroke outboard motor manufactured between 2002 and 2007. This powerful engine features a 4-stroke design with Electronic Fuel Injection (EFI) for efficient performance and reliability. Its robust engineering is designed for demanding marine applications, ensuring dependable operation across its production years. This comprehensive manual provides detailed information essential for maintaining and repairing your Mercury Mariner outboard. It includes procedures for repair, maintenance, adjustments, removal, installation, disassembly, assembly, diagnosis, and troubleshooting. With numerous illustrations, diagrams, and safety precautions, this guide is an indispensable resource for owners, technicians, and mechanics seeking to ensure optimal performance and longevity of their engine.