This workshop service repair manual covers the Mercury Mariner 65/80 HP Jet Outboard models. Engineered for reliable performance, these jet outboards are designed for a variety of marine applications. Their robust construction and efficient jet drive system provide dependable power and maneuverability. This manual is intended to provide comprehensive information to ensure the optimal operation and longevity of your Mercury Mariner outboard. This manual serves as an essential resource for owners, technicians, and mechanics. It details all aspects of maintenance, repair, and technical specifications for the Mercury Mariner 65/80 HP Jet Outboard. Key sections include step-by-step maintenance procedures, diagnostic troubleshooting guides, detailed technical data, and safety information. By following the instructions within this manual, users can effectively maintain their outboard, address potential issues, and ensure safe and efficient operation on the water.