This Engine Turning Tool and Timing Set compatible with John Deere is the ideal tool for checking the high-pressure fuel pump timing. It is suitable for various engine models, including 4024, 4039, 4045, 4239, 4276, 6359, 6619, 6059, 6068, 6076, 6081, 6090, 6105, 6125, and 6135. The set includes the DJ002-1 and LOCKING PIN DJ002-5(METAL), both made from high-quality materials to ensure durability and reliability. Before performing any engine work, ensure the vehicle engine is stopped. Locate the timing mark on the crankshaft wheel and insert the timing pin into the timing mark. Gently turn the crankshaft wheel until the timing pin is engaged by the pin socket, ensuring the engine is in the correct timing position. This tool and set are designed to be simple and easy to use, suitable for various maintenance and inspection needs. If you have any questions before purchase or encounter any problems during installation, please feel free to contact us. We are committed to providing high-quality products and excellent customer service to ensure your satisfaction.