Vauxhall Astra Owner's Manual page 64

If the two bicycles obstruct one
another, the relative positions of the
bicycles can be adapted by adjusting
the wheel recesses and the rotary
lever on the pedal crank recess until
the bicycles no longer touch one
another. Make sure there is sufficient
clearance from the vehicle.
Tighten the attachment screw for the
pedal bearing mount to its maximum
point by hand.
Secure both bicycle wheels to the
wheel recesses using the strap
retainers.
Check the bicycle to make sure it is
secure.
The settings for the wheel recesses
and on the rotary lever on the pedal
crank recess should be noted and
saved for each bicycle. Correct
presetting will facilitate refitting of the
bicycle.
It is recommended to attach
a warning sign at the rearmost bicycle
to increase visibility.
Storage
Removing a bicycle from the rear
carrier system
Undo strap retainers on both bicycle
tyres.
Hold on to the bicycle, loosen the
attachment screw for the pedal
bearing mount, then lift the pedal
bearing mount to remove it.
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