90-830234R2 Service Manual – Mariner Mercury Outboards

The Mariner Mercury Outboards Manual (part number 90-830234R2) is your official factory reference for servicing and repairing a range of Mariner and Mercury outboard motors. It covers the 75, 75 Marathon, 75 Sea Pro, 90, 100, 115, 125, and 65/80 Jet models. This edition applies to U.S. serial numbers 0D283222 and above, as well as Belgium serial numbers 09793577 and above.

Written by the same engineers who designed these engines, the manual gives you accurate diagrams, exact torque values, ignition timing charts, and full electrical testing steps. With these instructions, you can complete everything from simple tune-ups to major rebuilds.

Inside, you’ll find clear sections on power trim and tilt servicing, cooling system inspections, carburetor adjustments, and lower unit rebuilds. It also provides troubleshooting charts, resistance readings, and illustrated component breakdowns. These tools help you locate problems quickly and fix them the right way.

Unlike generic guides, this manual focuses only on your specific models and years. This ensures your maintenance meets the original specifications, keeping your engine efficient and extending its life. In addition, each procedure uses step-by-step instructions so you can work confidently without guesswork.

The Mariner Mercury Outboards Manual features a durable workshop-ready format. Its sturdy construction holds up against grease, oil, and heavy use in marine repair environments. Whether you’re a professional marine technician or a hands-on owner, this manual gives you the precision and reliability you need for every job.

Arizona Outboard Dismantlers supplies genuine manuals like this to help you protect your investment and enjoy worry-free performance on the water.