| Supply direction of the fuel -arrows- |
| 2 - | Unscrew the screw plug for extracting the water (must not be installed) and extract about 100 cm3 of liquid using the diesel suction pump -VAS 5226-, replace sealing ring. |
| 3 - | Fuel supply line from fuel tank, white or white marking. Check for secure seating. |
| 4 - | Fuel return line to fuel tank, blue or blue marking. Check for secure seating. |
| 5 - | Fuel supply line to engine, white or white marking. Check for secure seating. |
| 6 - | Fuel return line from engine, blue or blue marking. Check for secure seating. |
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