This service repair workshop manual covers the MERCURY Mariner OUTBOARD, designed for marine outboard motor service and repair. Applicable to models from 1997 onwards, these 2-stroke engines were offered with 115HP and 125HP options. The engineering quality and reliability of the Mariner OUTBOARD are supported by comprehensive documentation that details its unique operational capabilities for demanding marine environments. This manual provides essential information for maintaining and repairing your MERCURY Mariner OUTBOARD. It includes step-by-step instructions, hundreds of detailed photos and diagrams, and highly detailed exploded diagrams to guide you through all repairs, servicing, and troubleshooting procedures. This resource is invaluable for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their marine propulsion system.