Removal
Remove the air duct shield from the underbody B.
Release the fuel filter from the holder.
Remove bolt 1.
Note: The figures show the "Combo" model variant (F06, F25).

Install the head of the special tool 1 onto the fuel filter 2.
Threaded nipple 3 points downwards.
Press the entire surface of the rubber seal (arrow) onto the fuel filter housing.
Adjust the tie accordingly.
Tighten it with the clamp.

Place the fuel collection vessel 3 on the head of the special tool 1.
Caution! The fuel filter is under pressure. Check the special tool for a secure fit.
Attach the fuel collection vessel to the threaded pipe and tighten.
Note: The built-in drill drills through the fuel filter housing. The leaking fuel flows into a collecting vessel.
Blow out the fuel filter.
Attention! Follow the given sequence.
Using the pliers 5 supplied with the special tool, make the hole at the top as wide as possible (arrow).
Remove and plug 2 fuel lines (2, 4) from the fuel filter.
Caution: Remove the fuel lines only when fuel no longer flows out of the fuel filter.
Remove using KM-796-A tool from quick release coupling.
Plug the fuel line using the KM-807 tool.

Once the fuel filter is empty, remove the special tool.
Remove the receiving vessel.
Remove the head of the special tool – loosen the tension clamp.
Remove the fuel filter.
Installation
Insert 2 new connecting clamps 1 into the quick-release bushing of the fuel line 2.
Insert a new fuel filter.
Insert into the holder from the front.
Note: Please follow the directions for passing.
Connect 2 fuel lines (4, 5) to the fuel filter.
Remove the special tool KM-807.
Connect the 2 fuel lines with a quick release fitting to the fuel filter.
Perform a tensile test.
Note: Make sure the quick release latches are properly secured.
Secure the fuel filter into the holder.
Install bolt 3 and tighten it to 4 Nm.

Install the air duct shield on the underbody.
For the model variant "ECO"
With the engine running, check the 2 quick-release valves on the fuel line in the fuel filter for leaks.

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