Alfa Romeo Giulietta Owner's Handbook Manual page 96

Pulling the cord releases the flap lock: the
flap can then can be opened by pressing
it.
Closing
Release cap 1 from device 3 and insert it
in its housing. Then tighten the cap
clockwise until one or more clicks are
heard. Finally, close flap A checking that
it is correctly locked.
The sealing may cause a slight pressure
increase in the tank. A little breathing off,
while slackening the cap is absolutely
normal.
WARNING
107) Do not bring naked flames or lit
cigarettes near to the fuel tank opening: fire
risk. Keep your face away from the fuel filler
to prevent breathing in harmful vapours.
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