This manual covers Mercury Mariner Outboard 2-stroke engines, including models such as the 45jet, 50, 55 Marathon, 55 SeaPro, 60, 60 Bigfoot, 60 Marathon, and 60 SeaPro, with serial number prefixes 0D000750 and above (US) or 09671687 and above (Belgium). These engines, ranging from 45 to 60 horsepower, are designed for reliable performance in various marine applications. Their robust engineering ensures durability and efficiency, making them a trusted choice for boaters. This Factory Service Repair Manual provides comprehensive guidance for the maintenance and repair of your Mercury Mariner Outboard. It includes detailed information on general specifications, electrical and ignition systems, fuel systems, powerhead, mid-section, lower unit, and outboard installation. With step-by-step instructions, diagrams, and parts lists, this manual is an essential resource for owners, mechanics, and technicians to ensure optimal performance and longevity of the engine.