How do you change Carlton lock combination?

To set your personal cipher, follow these steps:

1- Open the lock (the original number is 0-0-0).

2- Pull lock's hook to the end, hold the position until the third operation had been performed.

3- Set your secret code by turning the wheels then release the hook.

4- Press the hook into lock's slot, turn the wheels to the other cypher, the hook can't be pulled. it is locked.