Model 6730, 6731, 6741
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      1. Help Center
      2. Mechanical Spin Dial Locks
      3. Model 6730, 6731, 6741

      How can I change my Combination for my Mechanical Lock when I do not have the combination?

      If your safe door is open you can use the process below.

      If the door is locked shut please see: Lost Combination.

      To avoid a potential issue don't put the allen wrench shaped change key into the lock unless the back cover is screwed on properly. Otherwise, you'll get an unlocked change key cam. You'll know because when the change key is inserted you won't be able to spin the dial. If that happens, let me know and I'll send you a document for that.You will need a "U8 Change Key" (sometimes sold on Amazon). You can always purchase these from our distributors.

      Tip: The most frequent error in the changing procedure is dialing the number to the wrong index. Occasionally all the numbers may be dialed to the opening index rather than the changing index. More often, dialing part of the combination to the changing index and part to the opening index occurs. If the door is open, the error is easily corrected.

      * Here is a video you can review on the process (not produced by S&G): Aligning the Tumblers of a 6730

       

      PROCEDURE

      1. Remove the cover from the lock.
      2. Insert a straightened paper clip or similar instrument (NOT the change key) in the square keyways of the wheels.
      3. Rotate each wheel until all the keyways are in perfect alignment directly over the small hole in the bottom of the case where the tip of the change key seats during normal changing operations. There is one hole in the bottom of the case. It lines up with the change keyhole in the lock cover (when the cover is in place on the lock body).
      4. Replace the cover and insert the change key. Replace the cover screws. NEVER INSERT A CHANGE KEY INTO THE LOCK WHEN THE COVER IS REMOVED! Always be certain that the wing of the change key is entirely within the lock before turning the key.
      5. Turn the change key one quarter turn counterclockwise and dial the new combination to the changing index following the change instructions specific to your lock model:

      enter three number combination

      Using the opening index this time, check new combination at least three times before locking the safe. After changing the opening code, the lock should be opened and locked several times with the safe door open.

      Make certain the new numbers of your combination are not all ascending 26-57-74 or descending 74-57-22, and that they are further than 5-digits apart. Do not have two number that are identical next to each other. Try mixing the numbers up like: 57-26-74 or 74-26-57. If you're using a date, try day-month-year European style. Make certain the last number of the combination is not between 85 and 20.
       
      When testing the lock before closing the door, make sure that the back cover is on the lock. The relocker will not allow you to unlock the door without the back cover in place. Test the new combination at least 3 to 5 times before closing the safe door.

      To avoid a potential issue don't put the allen wrench shaped change key into the lock unless the back cover is screwed on properly. Otherwise, you'll get an unlocked change key cam. You'll know because when the change key is inserted you won't be able to spin the dial. If that happens, please see: Misaligned Change Key Cam.