Opel CORSA Owner's Manual page 185

Green marking on the rotary knob is
visible.
Lock coupling ball bar and remove
key.
Eye for break-away stopping cable
Attach breakaway stopping cable to
eye.
Check that the coupling ball bar is
correctly installed
■ Green marking on rotary knob is
visible.
■ There must be no gap between the
rotary knob and the coupling ball
bar.
■ The coupling ball bar must be firmly
engaged in the opening.
■ The coupling ball bar must be
locked and the key removed.
Driving and operating
9 Warning
Towing a trailer is permitted only
when a coupling ball bar is fitted
correctly. If the coupling ball bar
does not engage correctly, seek
the assistance of a workshop.
Dismounting the coupling ball
bar
Insert the key in the lock and unlock
the coupling ball bar.
183