PREPARE FOR COMBINATION CHANGE:
1. Compare your changing tool to Figure 3. Only a tool which
very closely matches the outlined portion of the drawing
should be used (the handle section may have a slightly
different bend or length). Use of an incorrect tool will likely
cause the lock to malfunction.
2. NEVER insert a changing tool into the lock unless the lock’s
cover is in place.
3. It is advisable to cover the opening index with a small piece
of opaque tape to avoid aligning any numbers with it during
the combination changing procedure.
4. All changing operations are performed with the safe door
open. THE SAFE DOOR SHOULD NEVER BE CLOSED UNTIL THE
NEW COMBINATION IS SUCCESSFULLY TRIED AT LEAST THREE
TIMES!
SELECTING A NEW COMBINATION:
Observing the following rules will help you select a new com-
bination which is secure and which will optimize the design
strengths of your Sargent & Greenleaf lock.
1. Do not select numbers which all end in “0” and “5.” An
example of a poor combination is: “50 – 15 – 30.” An example
of a good combination is: “52 – 15 – 37.”
2. Do not select numbers in an ascending or descending
sequence. An example of a poor combination is: “22 – 41 –
68.” An example of a good combination is: “22 – 68 – 41.”
3. Leave at least a ten number margin between adjacent numbers
of the combination. An example of a poor combination is:
“41 – 39 – 66.” An example of a good combination is:
“41 – 30 – 66.”
4. Do not use a number between 95 and 99 or between 0 and
20 for the third (or last) number of the combination. This
can cause a condition which will inhibit the mechanism
from locking correctly.
5. Avoid using easily guessed numbers (birth dates, house and
phone numbers, etc.).
IF YOUR LOCK IS SET ON THE
FACTORY SHIPPING COMBINATION:
Turn the dial left until the number 50 aligns with the changing
index the fourth time. Go directly to the step titled “INSERT THE
CHANGING TOOL.” If the changing tool does not go into the lock
all the way, substitute 41 for the factory shipping combination.
IF YOUR LOCK IS SET ON A TRUE,
THREE-NUMBER COMBINATION:
1. Turn the dial left until the first number of the combination
aligns with the changing index the fourth time.
2. Turn the dial right until the second number of the combination
aligns with the changing index the third time.
3. Turn the dial left until the third number of the combination
aligns with the changing index the second time.
INSERT THE CHANGING TOOL:
The profile of both the changing tool and the opening in the
lock’s cover allow the tool’s insertion only when aligned cor-
rectly. It may be necessary
to wiggle the changing tool
slightly in order to insert it
to the point where the tool’s
wing (Figure 3) is entirely
inside the lock case. Do not
attempt to turn the changing tool until the wing is completely
inserted. Once this is accomplished, rotate the key approxi-
mately 90º counterclockwise
(the only direction in which
it will turn). A definite
release of tension inside the
lock will be felt (Figure 4).
ENTER THE 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.
4. Turn the dial right approximately ten numbers.
If you feel you have made any errors, however small, in the
changing procedure, begin again with the first step in this section
(“ENTER THE NEW COMBINATION”). Rotate the changing tool
approximately 90º clockwise and remove it from the lock.
Note: Do not pull outward on the changing tool until it has been
fully rotated to the same position as when you first inserted it.
Model 6730, 6735, 6738, 6741 Mechanical Combination Lock
Operating/Changing Instructions
Figure 3
Figure 4
3
© Copyright 2006, Sargent & Greenleaf, Inc.
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