This comprehensive Mercury Mariner 75, 90, 100, 115, and 125 HP Marathon Seapro Jet Outboard Service Repair Workshop Manual covers models manufactured from 1997 to 2003. The manual provides detailed instructions and diagrams for a wide range of maintenance and repair procedures, including engine disassembly and assembly, troubleshooting, electrical system diagnostics, fuel system repair, lubrication and cooling system maintenance, as well as propeller and steering system adjustments. This manual is an essential resource for anyone who wants to perform their own repairs or maintenance on these popular outboard motors, enabling you to confidently diagnose and repair a variety of technical issues.

The Mercury Mariner 75, 90, 100, 115, and 125 HP Marathon Seapro Jet outboard motors were produced by Mercury Marine from 1997 to 2003. These powerful and reliable engines became popular choices for a range of watercraft, including bass boats, pontoons, and smaller runabouts, thanks to their efficient jet propulsion system. The Seapro Jet drive offers several advantages over traditional propellers, including superior shallow water performance, increased maneuverability, and reduced risk of damage from submerged debris. The Marathon series was known for its durability and extended warranty, making these outboards attractive to both recreational and professional boaters.

These Mariner jet outboards featured a number of innovative technologies, including Mercury's patented "SmartCraft" system, which allows for engine monitoring and diagnostics via a digital display. The engines also utilized a high-capacity fuel injection system for enhanced fuel efficiency and power, while a robust cooling system ensured optimal operating temperatures. The 1997-2003 Mercury Mariner Seapro Jet outboards provided boaters with a powerful and versatile option, capable of navigating shallow waters with ease while delivering reliable performance. However, like any marine engine, proper maintenance and repair are crucial to ensure long-term functionality and safety. This is where the Service Repair Workshop Manual comes in, offering comprehensive instructions and technical information for owners and technicians alike.