8. Check the oil level. If necessary, fill in some oil until the oil level reaches the specified level. The filling oil volume is approximate 0.7 L. 9. Start the engine and verify there is no oil leak from the main oil filter. 1.4.3 Fuel system Fuel filter Replace procedure 1. Unscrew the used filter counter-clockwise with a filter wrench. 2. Clean the fitting surface of the filter upper cover to ensure suitable fitting with the new fuel filter. 3. Screw in the fuel filter until it makes perfect contact with the sealing surface. 4. Further screw in the filter by N 2/3 turn with a filter wrench. 28