This manual covers the Mercury Mariner 45 HP 4 Stroke Outboard, a versatile and reliable engine designed for a variety of marine applications. Engineered for performance and durability, this outboard motor provides consistent power and efficiency. Its robust construction ensures dependable operation across numerous model years, making it a trusted choice for boaters seeking quality and longevity on the water. This comprehensive Factory Service Repair Manual, written in English, provides detailed information for maintaining and repairing your Mercury Mariner 45 HP 4 Stroke Outboard. It includes hundreds of pages of step-by-step instructions, all necessary illustrations and diagrams, and an advanced troubleshooting guide. Coverage extends to essential systems such as fuel, lubrication, charging, starting, ignition, and controls, as well as specific components like Non-Bigfoot and Bigfoot gear housings, and power trim and tilt assist systems. This manual is an indispensable resource for owners, mechanics, and technicians.