This service repair manual covers the Mercury Mariner 60 outboard motor, a 3-cylinder, 967 cc (59.0 ci) engine producing 60 HP. Designed for marine propulsion, this water-cooled engine features a carbureted fuel system and a CDI ignition. It offers a Forward, Neutral, Reverse (F-N-R) transmission with varying gear ratios depending on the series (Big Foot, Marathon, SeaPro) and an electric start system. The alternator provides 10 Amps (120 Watt) of output. This manual is intended for users of the Big Foot, Marathon, and SeaPro series, encompassing multiple model years. The purpose of this English-language manual is to provide comprehensive guidance for the repair, maintenance, and diagnostics of the Mercury Mariner 60 outboard motor. It details essential procedures, troubleshooting steps, and technical specifications necessary for optimal performance and longevity. Key areas covered include lubrication, recommended oil types, service schedules for initial and periodic maintenance, and general operational parameters. This resource is designed to assist owners, mechanics, and technicians in effectively servicing and maintaining their Mercury Mariner 60 engine.