This Service Repair Workshop Manual provides comprehensive information for the Tohatsu 140 HP outboard motor. Engineered for reliability and performance, this gasoline-powered, water-cooled engine is designed for a variety of marine applications. Its robust construction and advanced ignition system ensure efficient operation, making it a dependable choice for boaters. This manual covers a range of model years, offering detailed insights into the engine's intricate systems. This manual serves as an essential resource for mechanics, owners, and independent professionals. It contains detailed troubleshooting procedures, step-by-step repair instructions, and crucial technical specifications, including diagrams, illustrations, and wiring schematics. Coverage extends to all major components, such as the powerhead, lower unit, fuel system, electrical and ignition systems, midsection, trim and tilt, and the hand rewind starter. By utilizing this guide, users can perform maintenance, identify issues, and conduct repairs, potentially leading to significant cost savings and ensuring optimal performance.