See also:

Tachometer
Tachometer Never force the engine speed up into the red warning field, see arrow. In this range, the fuel supply is interrupted to protect the engine. ...

Closing
1. Fit the fuel cap and turn it clockwise until you clearly hear a click. 2. Close the fuel filler flap. Do not pinch the retaining strap Do not pinch the retaining strap attached to the cap; ...

Screw thread
Push out the cover by pressing on the top edge. ...