This Service Repair Workshop Manual covers the Yamaha 140 Jet V6 outboard motor, produced between 1987 and 1995. Engineered as a 2-stroke, V6 configuration with a 2596cc displacement, this water-cooled engine delivers 140 HP and features a carbureted fuel system and CDI ignition. Its robust design and jet drive transmission with Forward, Neutral, and Reverse gears make it a reliable choice for various marine applications. This comprehensive manual provides essential information for maintaining and repairing your Yamaha 140 Jet V6. It details general information, safety precautions, scheduled maintenance, tune-up procedures, and in-depth coverage of the fuel system, electrical system, ignition, lubrication, cooling, powerhead, lower unit, trim and tilt, and remote control. Troubleshooting guides with step-by-step instructions, diagrams, illustrations, and wiring schematics are included to assist owners with basic mechanical skills and independent service professionals in keeping the motor in optimal condition.