This Service Repair Workshop Manual provides comprehensive information for the Tohatsu TLDI 40 / 50 outboard motors. These engines, part of the TLDI Series, are engineered with Direct Injection 2-Stroke technology, offering robust performance with 40 HP and 50 HP options. Their water-cooled system and CDI ignition ensure reliable operation, while the Direct Fuel Injection system enhances efficiency. The transmission features a Forward-Neutral-Reverse gear shifting mechanism. This manual is designed to support the ongoing maintenance and operational integrity of your Tohatsu outboard engine. The purpose of this manual is to serve as a definitive guide for owners, mechanics, and technicians. It covers essential areas including general service information, detailed service data, inspection and adjustment procedures, and specific guidance for the fuel system, power unit, lower unit, bracket, and electrical system. Furthermore, it includes a dedicated troubleshooting section to assist in diagnosing and resolving potential issues. By following the outlined procedures and specifications, users can effectively maintain, repair, and optimize the performance of their Tohatsu TLDI 40 / 50 outboard motors.