Set-Your-Own Combination Locks FAQs

Q: How do I change the combination on my key, mini or portable safe?

A:

Instructions for Set-Your-Own Combination Key, Mini, or Portable Safes:

Note: 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.

Store your combination at www.masterlockvault.com - a FREE service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

Q: How do I set or reset a Master Lock combination padlock that has a resettable “Set-Your-Own” combination? I would like to reset the lock to a different combination, but have lost the instructions for this. Can you help me?

A:

Click on the PDF below that matches your lock model number for instructions on how to change/reset the combination:

Note: 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.

Store your combination at www.masterlockvault.com - a free service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

Q: How do I set or reset a Master Lock luggage lock that has a resettable "Set-Your-Own" combination? I would like to reset the lock to a different combination, but have lost the instructions for this. Can you help me?

A:

Click on the PDF below that matches your lock model number for instructions on how to change/reset the combination:

Note: 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.

Store your combination at www.masterlockvault.com - a free service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

Q: How do I set or reset a Master Lock luggage lock that has a resettable “Set-Your-Own” combination? I would like to reset the lock to a different combination, but have lost the instructions for this. Can you help me?

Q: How do I set or reset the combination on my backpack lock model #1550?

A:

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. Align dials to preset combination (0-0-0).
  2. While pushing in button located on the bottom of the lock, turn the dials to any combination you choose.
  3. Release button only after you have finished choosing your combination.
  4. The lock is now ready to be used. To change your new combination again, dial your combination and repeat steps 2-3.
  5. Don't forget to write your combination down and keep it someplace safe!

Store your combination at www.masterlockvault.com - a free service from Master Lock! The Master Lock Vault provides a safe & convenient place to store all of your confidential data for quick & easy access from your PC, iPhone, or any other mobile devices!

Q: How do I set or reset my "Set-Your-Own" combination lock model M40EURDNUM?

A:

To set your own combination:

1. Locate ‘reset’ tool on back of package. Insert tool in side of lock. Lock must be OPEN to reset.
2. Push tool in and turn 90° clockwise. Must PUSH IN AND TURN to reset combination.
3. Set to desired combination. Turn tool counter-clockwise and remove.
4. Be sure to record your new combination at www.masterlockvault.com.
5. Close lock and scramble dials to close.

Q: How do I set or reset the combination on my bike chain lock model 8392?

A:

Please follow the steps outlined below: 
This lock is preset to operate at 0-0-0-0.

1. To set your own combination, dial the combination wheels to 0-0-0-0 and withdraw the lock.
2. Turn the knob 90 degrees in a clockwise direction to the designated position.
3. Now set your own combination, make sure the numbers are lined up with the marks.
4. Once you have selected your combination numbers, turn the knob back to the original position in a counterclockwise direction.
5. The reset operation is now complete.

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

A:

Please follow the steps outlined below: 
This lock is preset to operate at 0-0-0-0.

1. To set your own combination, dial the combination wheels to 0-0-0-0 and withdraw the lock.
2. Turn the knob 90 degrees in a clockwise direction to the designated position.
3. Now set your own combination, make sure the numbers are lined up with the marks.
4. Once you have selected your combination numbers, turn the knob back to the original position in a counterclockwise direction.
5. The reset operation is now complete.

Q: How do I locate the preset combination for the 1500iEURD and then reset the combination?

A:

The instruction sheet is located inside the packaging, in a drawer behind the plastic card. Use a pair of scissors to cut through the packaging and access the leaflet. The preset combination code is located on the upper right side of the instruction sheet.

To set your own combination:
You can set your combination to any pattern of any length. For extra security, it is best to create a longer combination
using several of the up, down, left and right positions. FOLLOW INSTRUCTIONS EXACTLY!

1. Dial the combination to open the lock. Keep the lock open.
2. On the back of the lock, use a pointed object to slide the reset lever into the "up" position (toward the "R").
3. SQUEEZE THE SHACKLE FIRMLY TWICE TO CLOSE THE LOCK AND "CLEAR" IT.
4. Pull up the shackle to open the lock.
5. Enter your new combination. Write your new code down in a safe place.
6. SLIDE THE RESET LEVER DOWN.
7. Insert the shackle into the lock and squeeze firmly.
8. Your lock will now open with the new combination.

To reset the combination again, repeat steps 1 - 8.
Remember to squeeze the shackle firmly toward the lock twice and release to "clear" the lock each time before opening it.

Q: How do I set or reset the combination on my backpack lock model 1547EURDCOL, 1549EURDCOL, or 1555EURDCOL?

A:

To set your own combination:

1. With dials at 0-0-0 push in the shackle.
2. With shackle pushed in, set your new combination.
3. Release shackle and scramble wheels to lock.
4. Make sure to record your secret combination.

Q: How do I set or reset the combination on a retractable cable lock model 4603EURD?

A:

To set 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 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.

Q: How do I set or reset my "Set-Your-Own" combination lock model M175EURDLF or M178EURD?

A:

To set your own combination:

1. OPEN lock and TURN shackle 90° to position I.
2. PUSH shackle in to lock until it “clicks.”
3. TURN shackle another 90° to position II.
4. SET dials at black indicator line to desired combination.
5. PULL shackle UP. VERIFY dials remained set to your combination before locking.

Lock is now set to new combination.
TO LOCK: Close the shackle and SCRAMBLE THE DIALS.
TO REOPEN: DIAL your combination and PULL shackle.

Q: How do I open or reset my TSA Approved Master Lock Travel Sentry Certified lock Model 4680EURDBLK or 4680EURDNKL?

A:

To set your own combination:

1. With dials at 0-0-0, pull out shackle.
2. Turn shackle counterclockwise 90° and press it down.
3. Continue pressing shackle and turn another 90°.
4. Set the dials to your own combination.
5. Turn shackle clockwise back to the original 90° position.
6. Lift and return shackle to closed position.

Q: How do I set or reset the combination on a built-in locker lock model?

A:

View the instructions on how to change the combinations on your built-in locker locks.

Q: How do I change the combination on a "Set-Your-Own" combination lock model 653EURD?

A:

To set your own combination:

1. With dials at 0-0-0-0, pull out shackle.
2. Turn shackle counterclockwise 90° and press it down.
3. Continue pressing shackle and turn another 90°.
4. Set the dials to your own combination.
5. Turn shackle clockwise back to the original 90° position.
6. Lift and return shackle to closed position.

Q: How do I change the combination on a "Set-Your-Own" combination lock model 604EURD?

A:

To set your own combination:

1. With dials at 0-0-0-0, pull out the shackle.
2. Turn shackle 90° (1/4 turn) and press it down.
3. Continue pressing shackle and set the dials to your own combination.
4. Lift and turn shackle to the initial position.
5. To lock, turn dials to scramble combination.

Q: How do I change the combination on a "Set-Your-Own" combination lock model 1520EURD, 1523EURD, or 1534EURD?

A:

To set your own combination:

1. Open and withdraw shackle. Note: For first time use, position wheels so that the numbers 0-0-0-0 aligns with the Master logo.
2. Pull spring-loaded metal end cap off.
3. Remove all four combination wheels.
    IMPORTANT: Make sure the red clutchplate marks remain aligned with pointer.
4. 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).
6. To lock: Dial your new combination; close shackle, scramble wheels “to lock”. Be sure to record your secret combination.

Q: How do I set or reset the combination on a "Set-Your-Own" combination padlock model 175EURD?

A:


1. 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.
2. Insert reset tool (enclosed in package) in hole on side of lock.
3. Push reset tool in and turn 90 degrees (in either direction). Reset tool automatically stays in this position.
4. Set wheels to desired combination.
5. Turn and remove reset tool. Lock is now set to new combination.
6. Record your new combination in a safe place.