This Repair Service Manual covers Mercury Mariner 70HP through 115HP outboard engines manufactured between 1987 and 1993. These 2-stroke engines, equipped with carburetor fuel systems and magneto ignition, were designed for reliable performance across a range of marine applications. The manual details various power configurations, including 3-cylinder and 4-cylinder models, and their associated variants. This comprehensive English-language manual provides essential information for maintaining and repairing your Mercury Mariner outboard. It details routine maintenance schedules, fluid specifications, and troubleshooting procedures, along with technical specifications and safety guidelines. This resource is designed to assist owners, mechanics, and technicians in ensuring the optimal performance and longevity of these engines.