NON-RETURN VALVE INSPECTION [SKYACTIV-G 2.5T]
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1. Complete the “BEFORE SERVICE PRECAUTION”. (See BEFORE SERVICE PRECAUTION [SKYACTIV-G 2.5T].)
2. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)
3. Remove the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)
4. Drain the fuel from the fuel tank to the position where the non-return valve is visible. (See FUEL DRAINING PROCEDURE [SKYACTIV-G 2.5T].)
5. Verify that the non-return valve is closed.