Porsche 911 GT3R 2010 Technical Manual page 43

4.2.2. Fuel
4.2.3. Reserve pumps
4.2.4. Main and in-tank pumps
98 ROZ
DO NOT drill holes in the area of the fuel cell.
DO NOT use sharp objects when removing the fuel cell from the car.
A reserve fuel pump is fitted as standard and is activated from a switch
mounted on the dashboard. A warning lamp in the push button is
illuminated when the reserve pump is running.
A switch mounted on the dashboard can be used to switch between the
various main and in-tank pump modes:
 Service: Normal operation
 Middle position: Fuel pumps off
In-tank service: Only the in-tank pumps are in operation

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