How to change the combination of a S&G mechanical safe lock

Sargent and Greenleaf
Model 6730, 6735, 6738, 6741 Mechanical Combination Lock

When preparing to change the combination on any Mechanical safe lock you will need the following.

1. safe change tool(key) that is made for that particular safe dial wheel set up.
2. The old safe combo(The combo you are changing)
3. The new combo(Which shouldn't be too simple or close to the old code for security reasons)

Once these essentials are acquired we can begin the set-up
Now you want to open the safe and keep the door open at all times even after the safe combo has been change to check the combo at least 2-3 times with the door open to insure that the wheels set properly and to make sure the combo works well.

The change index- Every Sargent and Greenleaf dials should have a "Change Index line" Which is the line to the left of the Opening index line. Once the safe is open you must dial the old code to the change line for the wheels to line up properly so you can insert your change tool in the back of the housing. Insert the tool fully and rotate 90º Counter-Clockwise. You will hear a "Click". Now follow the instructions below to set your new combo.

How to set to a new combination:

1.Turn the dial left until the first new numbers aligns with the

   changing index the fourth time.

2.Turn the dial right until the second new number aligns with

    the changing index the third time.

3.Turn the dial left until the third new number aligns with the

    changing index the second time.

At this point your wheels are lined up. 

5. Turn the changing tool  approximately 90º clockwise and remove
    it from the lock.

*Do not pull on the change tool until it has been

fully rotated to the same position that you inserted it initially.