This manual covers the Mercury Mariner 25 HP Outboard, a gasoline-powered outboard motor designed for marine propulsion. Engineered for reliability and performance, this outboard motor is a robust choice for various boating applications. Its water-cooled system ensures efficient operation, while the outboard gearcase with forward, neutral, and reverse gears provides versatile control on the water. This Service Repair Workshop Manual provides comprehensive guidance for maintaining and repairing the Mercury Mariner 25 HP Outboard. It details essential procedures, technical specifications, and troubleshooting steps necessary for optimal performance and longevity. Owners, mechanics, and technicians will find the information within this manual invaluable for all service and repair needs.