This workshop service repair manual covers Mercury Mariner outboard motors with 6, 8, 9.9, 10, and 15 horsepower, manufactured between 1986 and 2003. These 2-stroke, water-cooled engines are designed for reliable performance in various marine applications. The manual encompasses a range of models within this production period, offering comprehensive technical information for owners and technicians. The purpose of this manual is to provide detailed guidance for the maintenance, repair, and troubleshooting of your Mercury Mariner outboard motor. It includes step-by-step instructions, detailed illustrations, diagrams, photos, and wiring schematics to assist with all service needs. Essential technical specifications, fluid requirements, and service schedules are also covered, ensuring you have the necessary information to keep your engine operating at peak performance and reliability.