Open your lock by inputting the current combination. New Prestolocks have a factory set combination of "0-0-0."
Turn the shackle 180 degrees.
Press the shackle down and turn it 90 degrees to the left or right.
Input the new combination.
Move the shackle 90 degrees so that it is 180 degrees from its locked position. Take your hand off the shackle and pull it out. Turn it back to the locked position.
Push the shackle into the lock and turn at least one of the lock's dials.
Write down your new combination. Keep this paper in a safe place for future reference.
