FAQS

Lost Combinations

Note: If you are requesting combinations for a school or institution, please follow our instructions listed under the section titled as "School/Locker Locks".

I've forgotten the combination to my standard dial combination lock. How do I obtain the combination that I use for personal use?

Due to increased security concerns nationwide, Master Lock recognizes the heightened need for additional safety measures. We no longer provide lock combinations in response to phone, fax, or email requests. Please follow the procedure outlined below to obtain the combination to your lock and submit your request to:

Master Lock Warehouse
1600 W. La Quinta Rd
Suite/WHSE # 2B
Nogales, AZ 85621

Procedure:

Print out the Lost Combination Form from a printer friendly page, or download the PDF file.
Have your Lost Combination Form notarized by a Notary Public to prove that you are the owner of the lock (you can include up to 6 combinations on one notarized form).
- Note: Inmates at a correctional facility - in addition to the lost combination form, you must submit your request on official prison letterhead. In lieu of notarization, the form must be signed by a prison official.
Photocopy the serial number on the back case of your combination lock. This copy MUST clearly show that the lock is not attached to anything. Be sure to hand write the serial number on the photocopy.
Mail the original completed, notarized Lost Combination Form and the photocopy of the back of your lock to the address above.

* It will take approximately 4 to 6 weeks to process your request for a
combination.

Note: If the form is not fully completed and notarized with a raised seal or rubber stamped seal, or if the serial number is not legible on the photocopy, your request will not be honored. Master Lock does not reimburse for any Notary fees.

(Try our new combination registration site at combolocker.com, a free service from Master Lock!)

We are a health club and need to obtain more than 6 combinations for our locks. How can I obtain them?

For more than 6 combinations, we will process this as a chart. There is no need to fill out the lost combination form; however you must submit your request to us on your official letterhead. You must include the list of serial numbers that you need, your name and phone number, along with a check for $.75 per combination being requested.

Please mail your request along with your check to:

Master Lock Company
Attn: Health Club Combination Request
137 W. Forest Hill Avenue
PO Box 927
Oak Creek, WI 53154

	What is a Notary Public?
	A Notary Public is a state official authorized to witness the signing of important documents such as acknowledgements and jurats, administer oaths and affirmations, certify affidavits or depositions, and certain other powers as provided for by law. You can usually find a Notary at your bank and/or library (please call ahead).

	What should I do if I cannot get a legible photocopy of my lock?
	We suggest that you lighten the copy as much as possible. If you can not read the serial number after you make the copy - that is ok, just write it on the side of the copy. What we need more importantly, is to clearly see that it is not attached to something.

	The hardware store/home center no longer provides combination look-up service. What should I do now?
	Refer to the answer above for our lost combination policy.

	How may I obtain my lost combination when my lock is attached to my locker, bike, cabinet, etc.?
	Master Lock will not provide lost combinations if you are unable to prove ownership. To prove ownership, you must be able to photocopy the back of your lock and submit a notarized Lost Combination Form. If you cannot do so, you will need to contact your local locksmith for lock removal. Please note that Master Lock does not reimburse for locksmith fees and/or services.

	How long will it take to receive my combination?
	It will take approximately 6 - 8 weeks for you to receive your combination once we receive the information.

	I live outside of the US, can you e-mail the combination to me?
	Due to increased security concerns nationwide, Master Lock recognizes the need for additional safety measures. Click here to forward a note to our E-Commerce Team for further instructions.

	What is the dialing sequence to open a standard combination lock?
	Please follow the steps outlined below: Turn the dial 3 times to the right and stop on the first number of the sequence. Turn the dial to the left, pass the first number of the sequence and stop on the second number. Turn the dial to the right and stop on the third number of the sequence. Pull up on the shackle.

I've lost the combination to my resettable Master Lock. Can you tell me what it is?

Resettable combination locks have a combination that is assigned by the owner of the lock. Therefore, Master Lock does not have record of the combination that the owner set. The lock cannot be reset unless it is in the open position. If your lock is attached to something, you will need to call a locksmith for removal. Please note that Master Lock does not reimburse for Locksmith services and/or fees.

How do I open (or reset) my TSA Approved Master Lock Travel Sentry™ Certified lock (Model # 4680DBLK or # 4680DNKL)?

Click here for instructions on how to change/reset the combination for your TSA Approved Master Travel Sentry™ Certified lock.

*Once the lock is set, there is no way to open it without the combination. Please make sure you record your NEW combination in a safe place. (Try our new combination registration site at combolocker.com, a free service from Master Lock!)

The file requires Adobe Reader.

	I have a luggage lock from Master Lock that has a resettable combination. I would like to reset the lock to a different combination, but have lost the instructions for doing this. Can you help me?
	Click here for instructions on how to change/reset the combination for your Model # 620/630/646/647 lock. Once the lock is set, there is no way to open it without the combination. Please make sure you record your NEW combination in a safe place. (Try our new combination registration site at combolocker.com, a free service from Master Lock!)* The file requires Adobe Reader.

How To Reset a Set-your-own Combination Luggage Lock

Instructions for:

Model # 620/630/646/647 Luggage Lock

Model # 4680/4684 TSA Approved Master Travel Sentry™ Certified lock

*Once the lock is set, there is no way to open it without the combination. Please make sure you record your NEW combination in a safe place. (Try our new combination registration site at combolocker.com, a free service from Master Lock!)

The file requires Adobe Reader.

	Someone was playing around with my resettable combination lock and accidentally reset the combination. Now, I do not know the correct combination. Is there any way to reset this lock back to "0" and assign a new combo?
	Unfortunately, this lock is not resettable without knowing the combination that was assigned by the owner. It's most likely that you will need to purchase a new lock.

I have a brass padlock #175, #176, #177 or #178 from Master Lock that has a resettable combination. I would like to reset the lock to a different combination, but have lost the instructions for doing this. Can you help me?

Models #175, 176, 177 and 178:

Open lock with the factory set or previously set combination. The lock must be set to the current combination, or you cannot reset it. Note: the shackle must be in the open position to reset the combination.
Insert reset tool (enclosed in package) in hole on side of lock.
Push reset tool in and turn 90 degrees (in either direction). Reset tool automatically stays in this position.
Set wheels to desired combination.
Turn and remove reset tool. Lock is now set to new combination.
Record your new combination in a safe place. (Try our new combination registration site at combolocker.com, a free service from Master Lock!)

How do I set/reset my 179LH lock?

Here are the instructions on how to change the combination to your model #179 lock:

To Open: Turn each digit to "0" and depress shackle.

To Lock: Depress Shackle. Scramble digits.

Important: When changing to new combination, dial setting must remain on old combination!

Before leaving the factory, your combination padlock has been set to open at 0-0-0-0.

To Reset a New Combination:

Open Lock and expose shackle hole.
Leaving digit wheels on old combination, insert attached combination changing tool and press it as far as it will go. turn the combination tool 180 degrees until it is aiming at the shackle. Warning: If the combination changing tool is not fully depressed, a lost combination will result!
Set digits to your own personal combination and make sure the numbers are perfectly in line with the indicator.
Return combination changing tool 180 degrees and remove.
Depress shackle. If shackle cannot return to locking position, the change of combination is not successful. Adjust the dials so that they are lined up exactly with the indicator.
Spin the dials.

Note: Please make sure you record your NEW combination in a safe place since you are the only one that knows it! (Try our new combination registration site at combolocker.com, a free service from Master Lock!)

	I have lost the reset tool that allows me to change the combination on my resettable lock (175, 176, 177, 178). How can I obtain one?
	Contact your local hardware store or locksmith. (Master Lock's part number for the reset tool is K175).

	Can Master Lock reset my "set-your-own" combination lock if I return it to Master Lock?
	Unfortunately, your lock is a "set-your-own" combination lock. Once you have set the combination, we cannot reset it for you!

How do I reset the combination on my bike or cable lock? It has a resettable combination. I would like to reset the lock to a different combination, but have lost the instructions for doing this. Can you help me?

Please look for specific directions under the model number of your lock.

Model #8114:

Open the lock & withdraw the cable.
Turn the collar (circular, ribbed & in front of the combination wheels) - clockwise until it stops (about halfway around).
Set the combo wheels to your desired combination.
Turn the collar counterclockwise until it stops at its original position.
Record your new combination in a safe place. (Try our new combination registration site at combolocker.com, a free service from Master Lock!)

Model #8119, 8120, and 8122:

Open the lock and withdraw the cable.
Flip the small reset lever by the combination wheels to the "up" position.
Set the combo wheels to your desired combination, making sure the numbers are lined up with the marks on the case.
Flip the reset lever "down" to the starting position.
Record your new combination in a safe place. (Try our new combination registration site at combolocker.com, a free service from Master Lock!)

Model #8280 (Pro-Sport):

Press the button and remove u-bar from lock body.
Open the anti-dust cover and align the opening combination to the guide points.
Push the red button towards notch in body. Hold down (there should be a clicking sound).
Turn the dials to your desired combination.
Pull back reset button to its original position. The lock should now be reset to your new combination.
Record your new combination in a safe place. (Try our new combination registration site at combolocker.com, a free service from Master Lock!)

I have a retractable Master Lock cable lock (model #4603) and I have misplaced the instructions on how to set/reset a new combination

To Lock:
1. Press Cable Trigger Button and extend cable to desired length.
2. Insert Cable Head into Locking Port until it locks in place.
3. Scramble the combination dials.
4. Press the Cable Trigger Button to reduce slack and tighten cable.

To Un-lock:
1. Turn Dials to the opening combination.
2. Press the Release Button to release Cable Head from the Locking Port.
3. Hold down the Cable Trigger Button to retract cable.
Caution: The cable return mechanism is spring loaded. Please keep your hands and face out of rebound path.

To Set/Reset Your Own Combination:
1. The combination is pre-set at the factory to 0-0-0.
2. While holding down the Cable Trigger Button, push down the Cable Head until you hear a "click".
3. Rotate the Dials to your desired combination.
4. Pull out Cable Head while holding down the Cable Trigger Button.
--- Your personal combination is now set. ---
Note: Cable should be fully retracted for Step 1.

I have a backpack lock model #1542, 1544, 1547, 1548 and 1554 from Master Lock. How can I reset the combination on my backpack lock?

Here are the instructions on how to reset the combination on your backpack lock (which is pre-set at the factory to open to combination 0-0-0):

1. With dials at 0-0-0 (or combination the lock was previously set to), push in the shackle
2. With shackle pushed in, set your new combination
3. Release shackle and scramble wheels to lock
4. Be sure to record your NEW combination as you are the only one that knows it! (Try our new combination registration site at combolocker.com, a free service from Master Lock!)

Note: The lock may only be reset when it is in the open position. If you do not recall the combination the lock is set to, you will not be able to reset the combination.

I have a Set-Your-Own Master Lock combination lock (model #1520D and/or 1523D). How do I change the combination?

Here are instructions for changing your model number 1520D/1523D combination lock:

1. Open lock and withdraw the shackle.
2. Pull spring loaded metal end cap off.
3. Remove all 4 combination wheels.
4. IMPORTANT: Make sure the red clutch plate marks remain aligned with pointer. Install wheels so desired combination aligns with pointer.
5. Snap metal end cap back into place. (Note: If end cap will not mount properly, check wheels to make sure they are right side up.)

Note: Please secure your NEW combination in a safe place since you are the only one who knows what it is! (Try our new combination registration site at combolocker.com, a free service from Master Lock!)

I have a Set-Your-Own Master Lock combination lock (model #643D). How do I change the combination?

Here are the instructions for changing the combination on you model 643D lock. This lock is preset at the factory to operate at 0-0-0-0.

1. With dials at 0-0-0-0, pull out the shackle
2. Turn shackle counter clockwise 180 degree (1/2 turn) and press it down
3. Continue pressing shackle
4. Set the dials to your own combination
5. Lift and return the shackle to closed position
6. Scramble the dials to lock

Note: Be sure to record your NEW combination as you are the only one that knows it! (Try our new combination registration site at combolocker.com, a free service from Master Lock!)

Note: The lock may only be reset when it is in the open position. If you do not recall the combination the lock is set to, you will not be able to reset the combination.

I have a Set-Your-Own Master Lock combination lock (model #653D). How do I change the combination?

Here are the instructions for changing the combination on you model 653D lock. This lock is preset at the factory to operate at 0-0-0-0.

1. With dials at 0-0-0-0, pull out the shackle
2. Turn shackle counterclockwise 90 degree (1/4 turn)
3. Continue pressing shackle down and turn another 90 degree (1/4 turn)
4. Set the dials to your own combination
5. Turn shackle clockwise back to the original 90 degree position, lift and return shackle to closed position

Note: Be sure to record your NEW combination as you are the only one that knows it! (Try our new combination registration site at combolocker.com, a free service from Master Lock!)

Note: The lock may only be reset when it is in the open position. If you do not recall the combination the lock is set to, you will not be able to reset the combination.

	I have a high security Master Lock combination lock (model #2002 and/or 2010). How do I open it?
	1. Turn the dial 3 times to the right and stop on the first number of the sequence 2. Turn the dial to the left, pass the second number of the sequence and stop on it the second time around 3. Turn the dial to the right and stop on the third number of the sequence 4. Turn the dial to the left until it stops 5. Hold dial at stop and pull up on shackle to open lock

	I have a Master Lock Titanium Series combination padlock (model #2050XD and/or 2051XD). How do I open it?
	1. Turn the dial 3 times to the right and stop on the first number of the sequence 2. Turn the dial to the left, pass the second number of the sequence and stop on it the second time around 3. Turn the dial to the right and stop on the third number of the sequence 4. Push the button while pulling the shackle

How do I change the combination on my key safe?

Instructions for Set-Your-Own Combination Key Safes:

Model # 5400D Portable Key Safe

Model # 5401D Wall Mount Key Safe

Model # 5404DHC Wall Mount Single Key Safe

Model # 5406D Portable Key Safe

How do I set/reset the combination for my Master Lock Sports Series Ultra Combo (ML285) 5 ft x 12 mm cable combo lock?

Click on the following PDF file to download instructions on how to set/reset the combination for your lock.

Master Lock Sports Series Ultra Combo Cable Lock Instructions

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Note: Be sure to record your combination. Store in safe location. (Try our new combination registration site at combolocker.com, a free service from Master Lock!)