Operating Mechanical and Electronic Locks

The Safe house offers these instructional documents to assist customers with opening and changing the combination on assorted mechanical and electronic locks.

Please contact our Safe House representatives if you have additional questions or need assistance.  We are available 9 to 5 CST , Monday – Friday at 615-255-0500.

S & G Dial Lock

Proper Dialing Techniques for Mechanical Locks:
A very high percentage of lockouts are due to the end user’s
improper dialing of the combination lock. There is a simple,
definite procedure which must be followed to achieve consistent
success. An important point to remember is that there are
usually two index lines on a dial ring. The one at the twelve
o’clock position is used in dialing open the lock. The mark at
the eleven o’clock position (if present) is used only for changing
the combination.
While performing any procedure involving dialing numbers into
the lock, it is important to view the dial and ring straight on.
This helps ensure the number you are entering will be aligned
directly under the index mark. If you dial past the intended
number even slightly, begin the entire dialing procedure again.

The procedure for dialing a Sargent & Greenleaf Standard Mechanical Lock:

1. Turn the dial left (counterclockwise), stopping the fourth
time the first number of the combination aligns with the
opening index.
2. Turn the dial to the right (clockwise), stopping the third
time the second number of the combination aligns with the
opening index.
3. Turn the dial to the left (counterclockwise), stopping the
second time the third number of the combination aligns
with the opening index.
4. Turn the dial to the right. Some resistance should be felt
as the mark representing “5” comes under the opening
index, and the dial should reach a positive stop near “95.”

The lock is now open, You may now turn the handle and open your safe.
During the dialing process, it is normal to feel more resistance
each time the dial is turned a complete revolution. Each turn
of the dial engages another part of the mechanism, creating
more resistance to dialing.


Troubleshooting a Mechanical Combination Lock


The combination lock on your safe conforms to the requirements of Underwriters Laboratories Group 2 Combination Lock Specifications.  This assures that you have a highly tested and secure lock.

UL specifies that the combination should not open if the numbers are dialed more than 1 numbers from that set by the manufacturer or user.  This makes it difficult for unauthorized people to open the lock.

This also means that if the combination is not “centered” in this tight range, the lock will not open or will open only occasionally.

Please attempt the below procedure if you are experiencing trouble with your combination:

  1. Dial all the first three numbers on the combination one number higher, and if this does not work, one number lower. Fore example, if the combination is 20-40-60-87, try 21-41-61-87.  If this does not work, try 19-39-59-87.
  1. It may be that only one number is slightly off the provided combination. Based on the sample combination of 20-40-60, try one number at a time higher or lower.  For example:







  1. Dial the combination by adding one number to the first number, subtracting one from the second number, and adding one to the third number. If this does not work, try the same procedure but use 2 numbers.

One of the above approaches should work.  Please change the appropriate number(s) on the combination card, and the lock should continue to work properly from then on.


Changing your Combination on a Mechanical Lock:

Please note , to change a combination on a mechanical lock you must obtain a change key that is inserted in the back of the lock before dialing the new combination.  The Safe House Service Team can provide this service for you within our service area in Nashville and Knoxville TN.  PLEASE NOTE: WE DO NOT SELL THE CHANGE KEYS TO CHANGE MECHANICAL LOCK COMBINATIONS.

  •  http://www.sargentandgreenleaf.com  S & G Mechanical Lock :   (Dialing Combination Instructions)  Note :  Changing your combination is not recommended as a do it yourself function



Changing Combinations on Electronic Locks:

Sargent & Greenleaf Electronic Locks

 S & G Electronic Lock Model 6120 change instructions )      Scroll down to Changing Master Code

  • As mentioned previously, the master code can perform all programming functions for the 6120 lock. The master code can be changed, but the lock will not allow you to delete it. The factory default master code is 1 2 3 4 5 6 #. We strongly suggest you change it to a six-digit code of your own choosing before storing anything of value in your safe. Only the holder of the master code can change the master code.

The sequence is: Press SG (74)* ( Existing Code ) # 1 * ( New Code ) # ( New Code) # Your Master Code is now reset. 


S & G Electronic Lock Model Spartan ( Standard on most Browning Gun Safes) 


Step 1  Press 22* 123456# ( listen for 5 beeps )

Step 2 Enter your new 6 digit code then Press # (listen for 3 beeps)

Step 3 Enter your new 6 digit code again then Press # (listen for 3 beeps)

Example of operation: 22*123456# 987654# 987654# ( new code 987654 )

Step 4 Test you new code several times to confirm normal operation

Step 5 Record your new code and keep for future reference.


S & G Electronic Lock Model Titan ( Standard on most Newer Fort Knox Gun Safes) 

Opening the Lock using the Factory Default Code The factory default Master Code is 1 2 3 4 5 6. To open the lock, enter 1 2 3 4 5 6 #

Creating a New Master Code 7 4 * MASTER CODE # (lock with beep five times)  # 1 –  NEW CODE # (lock with beep three times ) NEW CODE # (lock with beep three times )

PIN Positions: 1 Supervisor Code (note that a Supervisor Code can only be created by the holder of the Master Code.)

Changing Your Own Code or the Factory Default Code 2 2 * (or 3 3 *) YOUR OLD CODE # (lock with beep five times ) NEW CODE # (lock with beep three times ) NEW CODE # (lock with beep 3 times )

Creating a New Code (User Code) 7 4 * MASTER CODE # (lock with beep five times) PIN POSITION # (2-8 ) NEW CODE # (lock with beep three times ) NEW CODE # (lock with beep three times )

PIN Positions: 1 Supervisor Code (note that a Supervisor Code can only be created by the holder of the Master Code.)

Deleting a Code (Supervisor or User Code) 7 4 * MASTER CODE # (lock with beep five times) PIN POSITION # (2-8 ) # (lock with beep three times) # (lock with beep three times )

PIN Positions: 1 Supervisor Code

2 – 8 User Codes Notes: The Master Code cannot be deleted.


Lagard & SecuRam Electronic Lock Change Instructions:

  • CHANGE COMBINATION NOTE: Each combination must be changed independently at the Lock. New combination will not be accepted if it varies from the current combination by only one digit (+/-). When selecting a combination, do not use a birthday or other predictable information that could give correlation between the user and the combination. CAUTION: Always perform this operation with the door open, and test the opening of the Lock with the new combination several times before closing the door. 1. Enter zero [0] six times. Ex. (0-0-0-0-0-0) 2. Enter an existing combination. Ex. (1-2-3-4-5-6) 3. Enter the NEW combination. Ex. (6-5-4-3-2-1) 4. Re-enter the NEW combination to confirm Ex. (6-5-4-3-2-1) The NEW combination is now active. 5. Test lock operation several times before closing the door.



Simplex 9600 Lock





Lock Change Instructions for the Simplex 9600 Lock

Changing the Code/Combination Simplex 9600

Note: If your lock is opening on every turn of the knob or lever, except upon entering a code, this may be a ZERO CODE. Before attempting to remove the lock from the door, refer to the troubleshooting procedures outlined at bottom of this document for a zero code symptom/solution.

9600 Series FAQ
Changing the Code/Combination

Read the instructions through once before attempting to change the combination.

The factory pre-set combination is 2 and 4 pressed simultaneously (and released), then press 3 (and release).

The door must be open.

  1. Turn the control knob to the left (counterclockwise) to the stop position and release (see figure 1). This clears the lock of previously used buttons.
  2. Enter the existing combination. Make sure you depress each button fully and release.
  3. Push down the combination change slide on the back side of the lock. Located at the end opposite control knob (see figure 2).
  4. Turn the control knob to the left (counterclockwise) to the stop position and release (see figure 1). This clears the old combination.
  5. Select a new combination, write it down. Some or all of the buttons may be used for your new combination—pressed individually or simultaneously.

Each button may be used only once. We do not recommend the use of a one- button combination.

  1. Enter your new combination. Depress each button fully and release it. You must feel a click each time you press a button to know that the button was fully depressed (see figure 3).
  2. Turn the control knob to the right (clockwise) to the stop position and release to activate the new combination (see figure 4).
  3. Enter new combination and test operation.


  • Do not force at any time.
  • If a wrong combination is entered while operating the lock, turn the outside thumbturn to the left (counterclockwise) to the stop position and release. This will clear any previously depressed buttons. Enter in the correct combination.TroubleshootingSymptom/problem: Turning outside thumbturn clockwise always retracts latch without depressing any buttons.Cause: Lock is in zero combination.
    Solution: Follow the procedure for setting a new combination except omit step 2.