Ducati MH900 evoluzione Manuel De L'utilisateur page 86

Tank filler plug (fig. 13)
Opening
Place the palm of your hand on the plug (1) and turn
anticlockwise.
Closing
Turn the plug (1) clockwise with the palm of your hand
and tighten it properly.
E
Warning
Always make sure you have properly refitted (see
page 28) and closed the plug after each refuelling.
20
fig. 13