Caution!
- Note risks when handling fuel.
- Disconnect ground lead from battery and insulate.
Remove seat.
![](https://motoinstruction.ru/img/bmw/10/116879.jpg)
Disconnect the plugs for fuel-level sensor (3) and fuel pump (2).
Close off fuel supply line (5) and the fuel return line (4) with hose clips, BMW No. 133010.
Open the hose clips (arrows) and disconnect the fuel lines from the fuel-pump unit.
![](https://motoinstruction.ru/img/bmw/10/116880.jpg)
Release ring (1) using wrench, BMW No. 16 1 021.
Remove fuel-pump unit (3) with gasket (2).
Installation is the reverse of the removal procedure: pay particular attention to the following. Make sure the fuel-pump unit is installed in the correct position and that the fuel feed hose and the fuel return hose are correctly routed.
Close hose clamps with pliers, BMW No. 13 1 500.
Tightening torques:
- Union nut to fuel tank: 36 Nm
Removing and installing fuel pump
Remove fuel pump unit.
Remove the warning-contact switch.
Remove the fuel strainer.
Installation is the reverse of the removal procedure.
Removing and installing fuel strainer
Remove fuel pump unit.
Using a screwdriver, pry fuel strainer (7) off the pump.
Installation is the reverse of the removal procedure.
Removing and installing warning-contact switch for fuel level
Remove fuel pump unit.
Cut through cable clip (5).
Clamp fuel-pump unit in vise with protective jaws.
Use a screwdriver to bend back the tabs on contact switch (6) and push the switch off the pump bracket.
Use a punch of suitable diameter to drive pins (4) out of the housing.
Installation is the reverse of the removal procedure.
Note: The reserve fuel capacity of the fuel tank can be adjusted by varying the height of the contact switch in the tank.