Porsche 2012 911 GT3 CUP Technical Manual page 23

3.6.1.1. Tension-free setting of the throttle cable
Before calibrating the throttle-butterfly potentiometer the throttle cable
must be set "tension-free":
1. Rotate the throttle cable in the direction "auf" on the connecting
part behind the driver seat
2. Press the two halves of the connecting part together
3. Rotate the throttle cable in the direction "zu"
The throttle cable has play in this position. Tasks such as throttle butterfly
reset can now be carried out.
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