This manual covers the Mercury Mariner 200 HP EFI 4-stroke outboard engine, manufactured between 2002 and 2007. This powerful and reliable engine features Electronic Fuel Injection (EFI) for optimal performance and efficiency. Designed for demanding marine applications, its robust construction and advanced engineering ensure dependable operation in various conditions. The 4-stroke design provides a balance of power and fuel economy, making it a versatile choice for a wide range of watercraft. The purpose of this comprehensive Service and Repair Manual is to provide detailed instructions and technical information for the maintenance and repair of your Mercury Mariner outboard engine. It includes essential procedures for routine maintenance, troubleshooting common issues, and performing in-depth repairs. This manual is an indispensable resource for owners, technicians, and mechanics, offering clear guidance on all aspects of engine care to ensure longevity and peak performance.