Vauxhall Corsa 2007 Owner's Manual page 193

Remove the pedal crank mounts from the
pedal crank recesses.
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Adapting the Flex-Fix system to a bicycle
With the rotary lever on the pedal crank
recess, roughly adapt the adjustable pedal
crank unit to the protrusion of the pedal
crank.
If the bicycle has straight pedal cranks,
unscrew the pedal crank unit all the way
(position 5) - see illustration.
Driving and operation
If the bicycle has cranked pedal cranks,
screw in the pedal crank unit all the way
(position 1) - see illustration.
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