This manual covers Mercury Outboard Motors, specifically models including the 45 Jet, 50, 55 Marathon, 55 SeaPro, 60, 60 Big Foot, and 60 Marathon, applicable to serial numbers 0D000750 and Above (US) or 09671687 and Above (Belgium). These robust outboard motors, typically featuring an inline 3-cylinder engine configuration and ranging from 45 to 60 horsepower, are engineered for reliable performance in various marine applications. Whether carbureted or fuel injected, these engines represent a commitment to quality and durability in marine propulsion. This comprehensive service manual provides detailed instructions for repair, service, restoration, maintenance, rebuilding, diagnosis, and troubleshooting of your Mercury outboard motor. Designed for professional technicians, mechanics, and DIY enthusiasts, it includes clear, step-by-step procedures, zoomable illustrations, exploded views, and detailed component breakdowns. The manual is presented in English and is fully printable and savable, ensuring you have the resources needed to keep your engine operating at peak efficiency.