How do you change the combination on 1330 sentry safe?

To change the combination on a Sentry Safe model 1330, first open the safe using the current combination. Next, locate the combination change keyhole, usually found on the back of the door. Insert the change key that came with your safe, turn it to the left until it stops, then enter your new combination and turn the key back to its original position. Finally, test the new combination to ensure it works before closing the safe.