"Set-Your-Own" Combination Locks Instructions FAQs

To set your own combination: (REMEMBER: Combination can only be set when lock is open.)

1. INSERT ‘reset’ tool (A) (enclosed in package) in hole on side of lock.
2. PUSH key in and TURN key 90° in either direction (key automatically stays in this position). Failure to exert force while pushing key in will result in a failed attempt to set or reset combination.
3. SET wheels (B) to desired combination.
4. TURN and remove reset tool. Lock is now set to new combination. BE SURE TO RECORD YOUR SECRET COMBINATION.

To Lock: SCRAMBLE the wheels and CLOSE the shackle.
To Reopen: DIAL your secret number and DEPRESS shackle.

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.
4. IMPORTANT: Make sure the red clutchplate marks remain aligned with pointer.
5. Install wheels so desired combination aligns with pointer.
6. 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).
7. To lock: Dial your new combination; close shackle, scramble wheels “to lock”. Be sure to record your secret combination.

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.

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.

Print or view the installation instructions for our built-in locker locks.

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

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.

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.

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.

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.

To set or reset the combination on your Master Lock 1550 backpack lock:

1. Align the dials to the previous combination. The factory-set combination is 0-0-0. 
2. Push in the button at the bottom of the lock. While holding in the button, turn the dials to your new combination. 
3. Once the dials are set to your new combination, release the button. The lock now has a new combination. 
4. Record your combination in a safe place.

For further guidance on how to set or reset the combination on your lock, please see the instruction sheet.

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.

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:

1. You can set your combination to any pattern of any length. For extra security, it is best to create a longer combination
2. using several of the up, down, left and right positions. FOLLOW INSTRUCTIONS EXACTLY!
3. Dial the combination to open the lock. Keep the lock open.
4. On the back of the lock, use a pointed object to slide the reset lever into the "up" position (toward the "R").
5. SQUEEZE THE SHACKLE FIRMLY TWICE TO CLOSE THE LOCK AND "CLEAR" IT.
6. Pull up the shackle to open the lock.
7. Enter your new combination. Write your new code down in a safe place.
8. SLIDE THE RESET LEVER DOWN.
9. Insert the shackle into the lock and squeeze firmly.
10. 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.

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.

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

• Model # 1500iD Speed Dial Combination Padlock
• Model # 1590 Precision Dial Combination Padlock

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!