Serpento COBRA Manual De Usuario página 84

WARNING
The gasoline tank should not be overfilled. Never spill gasoline on hot engine. Never add the fuel over tank inlet as shown in the Fig. Otherwise
expansion of the gasoline owing to higher temperature will cause overflow.
The engine should be stopped during the refilling, and the ignition switch should be turned to OFF. No smoking during the refilling.
Rear Brake Pedal
18