This comprehensive service repair manual provides detailed instructions and diagrams for servicing Mercury Mariner outboard motors, specifically the 75/75 Marathon/75 Sea Pro, 90, 100, 115, 125, 65, and 80 Jet models. The manual covers a wide range of topics to aid you in performing your own repairs. It begins with essential information including specifications, maintenance tips, general information, and outboard installation guidelines. Moving on to the electrical system, it covers ignition, charging and starting systems, timing and synchronization, and essential wiring diagrams. The fuel system section delves into components such as the fuel pump, carburetor, oil injection system, and emission controls. The manual then explores the powerhead, mid-section, and lower unit, offering in-depth guidance on these critical areas of the outboard. For the mid-section, it specifically addresses clamp/swivel brackets, drive shaft housing, power trim (including different serial number ranges), shock absorbers, manual tilt, and more. The lower unit section covers the lower unit itself, along with the jet drive for the designated models. Additional topics include attachments and control linkage, focusing on throttle/shift linkage, tiller handle, and a dedicated section on manual starters. This service repair manual is an invaluable resource for anyone looking to understand and maintain their Mercury Mariner outboard motor, offering clear instructions and detailed diagrams to guide you through the process.

The Mercury Outboard 75/90/100/115/125/65/80 Jet Service Repair Manual is a comprehensive guide designed for professionals and serious enthusiasts working on Mercury Mariner outboard motors equipped with jet drives. This manual covers a wide range of models, encompassing the 65, 75, 80, 90, 100, 115, and 125 horsepower jet-powered outboards. It is an invaluable resource offering detailed instructions for troubleshooting, repairing, and maintaining these powerful and versatile marine propulsion systems. The manual is specifically tailored to address the unique aspects of jet-driven outboards, which differ significantly from traditional propeller-driven engines. It delves into the intricacies of the jet drive system, including the pump, impeller, nozzle, and steering mechanism. From routine maintenance tasks like oil changes and filter replacements to more complex procedures like carburetor adjustments and engine rebuilds, this manual provides step-by-step instructions, diagrams, and specifications to ensure a successful and efficient repair process. Whether you are a seasoned mechanic or a dedicated DIYer, this manual provides the necessary information to keep your Mercury Mariner jet outboard running smoothly and reliably for years to come.