How to set a combination code: 1. Hold the combination lock in which way numbers show on the right. Make sure the code is set to default(0-0-0-0). Pull up the shackle and rotate it until it points towards you. 2. Push the shackle down until the tiny pin is fully inside the gap. Hold it there and rotate the shackle anticlockwise, so it stays down without being pushed manually. 3. Rotate back the shackle the same way until it pops up. Remember to check if numbers are line up before locking.