I need to reset the combination on the Lock box, a 5401, and do not have the instructions.

Google

make model manual
or
make model change combination

It is impossible for us to guess what you have. Here are a few just for fun!

"Set-Your-Own" Combination Locks Instructions ' FAQs

https://www.masterlock.eu > ... > FAQs > Padlocks

Q: How do I set or reset the combination on my bike cable lock model 8221, 8231, 8120, 8190, 8226?

Change my combination? - S&G - Sargent & Greenleaf

https://sargentandgreenleaf.com > knowledgebase > kno...

Do not remove lock cover. If an error is made, re-dial the entire combination. A U8 change key is required to change the combination. If you ...

Support FAQs ' Master Lock

https://www.masterlock.com > Support

Q: How do I set or reset a Master Lock combination padlock that has a ... Q: How do I change the combination on a Set-Your-Own combination lock model #643D?

How do I set or reset the combination on my Lock Box?

https://www.snapsafe.com > support > faqs > how-do-i-...

Begin by opening your Combination Lock Box. To open a new lock box for the first time: Move all 3 digits to 0-0-0. Make sure all digits are centered on the ...

How do I reset the combination?

Instructions are included with every combination lock, however if you have lost them, please refer to our instructions which can be downloaded at the respective product page. If you have set the combination once, you will need to remember this combination when resetting again (i.e. replace the 0-0-0 in the instructions with the combination you chose).

Krypto has the resetting of the combination lock on their website (under Maintenance) but if you cannot unlock it in the first place you can not reset the combination. You have to know the old combination to get it open.

Two solutions: (if the box is closed and it is attached to something)


1. Contact Masterlock.com and fill out the form, get it notarized and send it in for the combination to unlock it based on the S/N which is on the lock.(http://www.masterlock.com/faq/LostCombinations/). Good luck on this since Masterlock will end up finding something that will prevent them from giving you the combination. Its quite frustrating and NOT worth the trouble.

2. Go to home depot. Buy a 24in bolt cutter ($22) cut the stem of the lock. and replace with a new lock that you can buy from home depot for $ 29.00. If you have a key that is inside the lock box that you really need, You will now need to drill out the combinations piece by piece and the door will pop open or send the lock back to Masterlock. They will retrieve the key for you and send it back.

try all zeros Kryptonite locks come preset to zeros once unlocked there is a small lever inside were it locks together pull it down and set your new combo then push it back up

My new lock didn't come with any instuctions. I followed the link above and located the "bike locks" heading. I found that the question:

- I have a Kryptonite resettable combination lock and can't find the instructions for resetting it. How can I change the combination?

contained a pdf titled :

- Resettable Combination Cable
(red reset buttons inside)

which is not the cryptoflex 1218 but is compatible anyway.

dont hurt your fingers trying to depress the nodules as the diagram says though. to my chagrin i discovered that they will turn easily if you just push them around into place.

here are the instructions:

To set your own combination
Your new lock is preset to open at 0-0-0-5 at the factory.
1. Open the lock by aligning the opening combination
number to the Guide Points and pull out the Lock
Post. (Figure 1)
2. Push down the two Reset Buttons simultaneously
with thumb and forefinger, and turn counterclockwise
until it comes to a stop. (Figure 2)
3.You are now ready to turn the dials to set your
secret combination, such as a phone number, birthday,
etc.
4. After setting your secret combination, turn the
two Reset Buttons again by Thumb and Forefinger
clockwise until it comes to a stop and back to its
original position.
5. Verify your new combination before using your
lock. Insert the Lock Post all the way into the Locking
Port but do not turn the dials. Pull out the Lock Post.
Your lock is ready to use.
6.The reset operation is now complete. Repeat
steps 1-5 anytime you wish to change your secret
combination.

5401

A9 5D 4E FE 20 E1 2D 03

5D 61 B2 C8 E7 DD F9 57

Try this....
My new lock didn't come with any instuctions. I followed the link above and located the "bike locks" heading. I found that the question:

- I have a Kryptonite resettable combination lock and can't find the instructions for resetting it. How can I change the combination?

contained a pdf titled :

- Resettable Combination Cable
(red reset buttons inside)

which is not the cryptoflex 1218 but is compatible anyway.

dont hurt your fingers trying to depress the nodules as the diagram says though. to my chagrin i discovered that they will turn easily if you just push them around into place.

here are the instructions:

To set your own combination
Your new lock is preset to open at 0-0-0-5 at the factory.
1. Open the lock by aligning the opening combination
number to the Guide Points and pull out the Lock
Post. (Figure 1)
2. Push down the two Reset Buttons simultaneously
with thumb and forefinger, and turn counterclockwise
until it comes to a stop. (Figure 2)
3.You are now ready to turn the dials to set your
secret combination, such as a phone number, birthday,
etc.
4. After setting your secret combination, turn the
two Reset Buttons again by Thumb and Forefinger
clockwise until it comes to a stop and back to its
original position.
5. Verify your new combination before using your
lock. Insert the Lock Post all the way into the Locking
Port but do not turn the dials. Pull out the Lock Post.
Your lock is ready to use.
6.The reset operation is now complete. Repeat
steps 1-5 anytime you wish to change your secret
combination.

how to initially set resettabe master locks

Instructions:
Opening the key storage
compartment door
1. Open shutter door to reveal the dials
and the release button
2. Rotate dials to the current combination
(if the lock is new, the combination is set
at the factory to 0-0-0-0)
3. Press down on the release button
to open the door
4. Pull the door fully open
5. Add or remove keys
6. Close compartment door
7. Scramble the combination dials to lock
the door and conceal your combination (A)
8. Close the shutter door (B)
To set a new combination:
The initial combination is set at the
factory to 0-0-0-0
1. Open the compartment door
(see instructions above)
2. Push the reset lever left and down.
The lever remains in this position
3. Rotate dials to your desired combination
4. Push the reset lever, up and right, back
to the original position
5. Close the key storage compartment door
6. Scramble the combination dials to lock
the door and conceal your combination (A)
7. Close the shutter door (B)
To hang shackle model
1. Open the compartment door
(see instructions above)
2. Push the shackle release lever to the left
to open shackle
3. Pull the shackle up and out of the lock
4. Place shackle around door knob or other object
5. Close shackle to lock
6. Close the compartment door
7. Scramble the combination dials to lock
the door and conceal your combination (A)
8. Close the shutter door (B)
Reminder:
(A) The release button will open the lock
until you scramble the dials
(B) Keep the shutter door closed to increase
weather resistance and to conceal the
dials from view