This manual covers the Mercury Mariner Outboard models manufactured between 1988 and 1993. These 2-stroke, water-cooled engines, available in 100 HP and 115 HP configurations, feature a 3-cylinder design and utilize carburetion for fuel delivery. Notable features include power trim and tilt systems (Design I, Design II, and Single Ram) and tiller handle copilot controls. The robust engineering of these outboards ensures reliable performance for various marine applications. This comprehensive Factory Service Repair Manual, provided in English, offers detailed guidance for maintaining and repairing your Mercury Mariner Outboard. It includes essential information on routine maintenance, tune-up procedures, troubleshooting, and parts replacement, supported by diagrams and illustrations. The manual also covers motor installation and engine attachments, equipping owners, mechanics, and technicians with the knowledge to keep these powerful engines operating at peak efficiency and reliability.