The ShurLok operates on a patented system of two groups of combinations. One Combination opens the shackle (factory setting on 0-0-0-0) and the second combination opens the sliding key storage door (factory setting on 3-3-3-3). To set your combination at any time, follow the instructions below.

1. Set dials on shackle opening combination (factory setting on 0-0-0-0) and open the shackle
   
   
2. Use a coin or paper clip to turn the change button 90 degrees (1/4 turn). Never force the change button. If it is difficult to turn, make sure the numbers are lined up and that you have the correct combination.
   
   
3. Return the change button to the original position by turning counter-clockwise 90 degrees 91/4 turn)
   
   
4. The sliding door combination is automatically set when the new shackle combination is set. Follow the chart below to f ind new shackle combination for the sliding door

Note: Some locks are stiff being new. If the lock will not open the first time, simply press down on the dials to settle them in place.