When mount the engine oil cartridge, after the sealing ring has contacted, then tight 3/4 1 circle. Over tight the cartridge will cause the screw to distort or damage the sealing ring of cartridge. Check and clean the discharging oil screw plug and sealing surface, and install the discharging oil screw plug. Fill the clean engine oil into the engine until reach proper height of oil level. The capacity of the entire lubricating system, including the cartridge, is 27 L. Run the engine under idle speed and check if the cartridge and discharging oil screw plug leakage. 20-12