Ducati 749S 2005 Owner's Manual page 132

Tank filler plug (fig. 29)
Opening
Lift the protection lid (1) and fit the ignition key into
the lock. Turn the key clockwise 1/4 turn to unlock.
Lift the plug.
Closing
Refit the plug with the key in it and push it down into its
seat. Turn the key anticlockwise to its initial position and
take it out. Close the lock protection lid (1).
Notes
The plug can only be closed with the key in.
Warning
After refuelling (see page 55) always make sure that
the plug is correctly replaced and locked.
1
E
fig. 29
35