Procedures

Emptying the fuel tank

WARNING: Emptying the fuel tank involves partial dismantling of the car's fuel system. The following points must therefore be observed in connection with this work:
- Work only in a well-ventilated area. If approved equipment for the extraction of fuel vapours is available, be sure to use it.
- Wear suitable gloves. Prolonged contact with fuel can cause skin irritation or dermatitis.
- Keep a class BE fire extinguisher near at hand. Be mindful of the danger of sparks caused by short circuits and when connecting and disconnecting leads in electrical circuits.
- No smoking anywhere in the vicinity,
- Wear protective goggles.

The fuel tank has no drain plug. When work on the fuel system requires the tank to be drained, this should be done with suitable tank draining equipment.

Important
Scrupulous cleanliness is of the utmost importance when working on the fuel system. Prevent dirt, etc. from entering the fuel tank and fuel lines.







1 Detach the outlet connection from the fuel pump.
2 Attach the non-return valve, part No. 41 61 766 with connected rubber hose. Smear the O-rings with acidfree vaseline.
3 Run the pump by connecting jumper lead 83 93 886 across fuses No. 8 and No. 19. Place the end of the hose in a closed receptacle and run the pump until the tank is empty.
4 If the pump is defective, use tank draining equipment and suck the fuel out through non return valve 41 61 766 with connected rubber hose.