The Mercury Mariner Outboard Four Stroke, manufactured from 1999 onwards, represents a robust and reliable choice for marine propulsion. This series offers a range of horsepower options, including 40HP, 45HP, and 50HP variants, with a focus on the efficient Bigfoot engine design. Engineered with a water-cooled system and likely featuring fuel injection for optimal performance, these outboards are built for demanding aquatic environments. Their design emphasizes durability and consistent power delivery, making them a dependable partner for various boating activities. This comprehensive Workshop Service Repair Manual provides detailed guidance for maintaining and repairing your Mercury Mariner Outboard Four Stroke. It covers all repair procedures with step-by-step instructions, supported by exploded views, diagrams, illustrations, and pictures to ensure clarity. Essential technical specifications and fluid recommendations are included to aid in proper servicing. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the longevity and optimal performance of their 1999 onwards Mercury Mariner outboard motors.