This Service Repair Workshop Manual provides comprehensive information for the Mercury Mariner outboard engine. Engineered for reliability and performance, this water-cooled, inline 4-cylinder engine delivers 115 horsepower from its 1.7L (103.7 cu. in.) displacement. Featuring Electronic Fuel Injection (EFI) and a Capacitor Discharge Ignition (CDI) system, the Mariner is designed for efficient operation. Its robust construction and advanced technology ensure dependable power for a variety of marine applications. This manual serves as an essential guide for owners, mechanics, and technicians. It covers critical maintenance procedures, including recommended oil types and capacities, cooling system upkeep, and propeller selection. Detailed troubleshooting steps for common issues such as starting problems, overheating, and power loss are included. Technical specifications, electrical system details, and information on the power trim and tilt system are also provided, enabling effective maintenance and repair to keep the Mercury Mariner operating at its peak.