This manual covers Mercury Mariner Outboard engines manufactured from 1999 onwards. These four-stroke engines, available in 40hp, 45hp, and 50hp variants, feature the robust Bigfoot model variant and are equipped with an electrical ignition system and water-cooled operation. Designed for reliability and performance on the water, these outboards represent a significant advancement in marine propulsion technology. This comprehensive Service Repair Workshop Manual in English provides detailed guidance for maintaining and repairing your Mercury Mariner Outboard. It includes extensive troubleshooting, tune-up procedures, and A-Z repair coverage for all components, including the lower unit and tilt trim. With high-quality illustrations, diagrams, and included part numbers, this manual is an essential resource for owners and technicians alike, ensuring optimal performance and longevity of your engine.