How do I adjust the leg press plate position?

Remove the Lock Pin (73) from the Adjustment Tube (10), then align the holes in the Leg Press Arm (9) with the desired set of holes in the Adjustment Tube (10). Re-insert the Lock Pin through the holes and make sure the hook on the Lock Pin is clipped in place on the Adjustment Tube. Always ensure the lock pin is fully inserted and clipped before use. (Page 23)