Manually operated model featuring a direct injection system with an injector, injection pump, pre-chamber, preheating glow plug, and a complete cooling system. Designed for technical training, it includes color-coded, sectioned components for easy identification of fuel and lubrication circuits. A crank handle simulates the engine cycle, with a bulb illuminating during the expansion phase to demonstrate the combustion process. The model is mounted on a durable base, with chromed and galvanized parts for long-term use, providing an in-depth understanding of 2-stroke diesel engine mechanics.