Nortik scubi 1 XL Assembly Instructions Manual page 18

Knot the end of the steering ropes to the
last link of the extension's chain.
This gives you the possibility to vary the
position of the chain to suit your leg
length.
Then position the steering bar to the
desired position and secure it with the two
shackles.
Attach the pull-up rope to the rudder blade
with the carabiner.
18