The basic steps to reset your Master Lock combination
Most Master Locks use one of two methods to change the combination: the reset lever method for padlocks with a small lever on the back, or the bolt cutter method for locks without a reset lever. The method depends on your lock model and whether you still have the original combination or are locked out.
If you have the current combination and your lock has a reset lever, you can change it yourself in about two minutes. If you don't have the current combination or your lock has no reset lever, you'll need to cut the lock off and replace it, or contact Master Lock directly for a replacement.
Key Takeaways
- Locks with a reset lever on the back can be opened and reset to a new combination without tools or the original code.
- Locks without a reset lever cannot be changed without destroying the lock or contacting Master Lock with proof of ownership.
- The reset lever method takes about two minutes and requires only your hands and the current combination.
- Master Lock offers replacement services if you've lost the combination and cannot access the reset lever.
Resetting a Master Lock with a reset lever
Open the lock using your current combination. Pull the shackle (the U-shaped metal piece) straight up as far as it will go. Look at the back of the lock for a small lever or button — this is the reset lever.
While holding the shackle up, slide the reset lever to the opposite side. You should hear or feel a click. Lower the shackle back down. The lock is now in reset mode and will open with any combination.
Spin the dial at least three full rotations to clear the old combination. Stop on any number you want as your first digit of the new combination. Pull the shackle up again. Spin the dial three more times and stop on your second digit. Pull the shackle up a third time. Spin the dial three more times and stop on your third digit. Pull the shackle up one final time — if it stays up, your new combination is set. If it falls down, repeat the process.
What to do if your lock has no reset lever
Locks without a reset lever cannot be changed without destroying the lock. This includes most older Master Locks and some specialty models. Your options are to cut the lock off with bolt cutters or an angle grinder, or to contact Master Lock directly.
Master Lock offers a replacement program if you can prove ownership. You'll need to provide proof of purchase or ownership, such as a receipt or photo of the lock with identifying information. Contact Master Lock through their website or customer service line with your lock's serial number and proof of ownership. They will send you a replacement lock with a new combination.
If you're locked out and don't know the combination
If you cannot open the lock because you don't remember the combination, you have two paths. If the lock has a reset lever, you can still use it — the reset lever works even if you don't know the current combination. Open the lock using the reset lever method described above, then set a new combination you will remember.
If the lock has no reset lever and you don't know the combination, the lock must be cut off. Use bolt cutters, an angle grinder, or a hacksaw to remove it. Master Lock does not have a method to unlock a padlock without the combination or reset lever, even with proof of ownership, because doing so would defeat the purpose of the lock.
Choosing a new combination you'll remember
When you set your new combination, pick numbers that form a pattern you can recall but that aren't obvious to someone who knows you. Avoid birthdays, anniversaries, or sequences like 1-2-3. Write the combination down and store it somewhere safe — not on a note attached to the lock or in an obvious place.
Test your new combination several times before you rely on it. Open and close the lock at least five times to make sure you have the sequence right and that the lock responds consistently.
Master Lock models and their reset capabilities
Master Lock makes dozens of models, and not all of them can be reset by the user. Combination padlocks with a visible reset lever on the back can always be reset. Dial padlocks without a reset lever, key padlocks, and electronic locks cannot be reset without destroying the lock or contacting the manufacturer.
Check your lock's packaging or manual to see if it has a reset lever. If you've lost the packaging, look at the back of the lock — if you see a small lever or button, you can reset it. If the back is smooth or has only a keyhole, the lock cannot be user-reset.
Frequently Asked Questions
Can I reset my Master Lock if I don't know the current combination?
Yes, if your lock has a reset lever. The reset lever works independently of the combination, so you can use it even if you've forgotten the code. If your lock has no reset lever, you cannot reset it without cutting it off.
What if the reset lever doesn't click or move?
The lever may be stuck or you may be pushing it the wrong direction. Try sliding it firmly in both directions. If it still won't move, the lock may be damaged or may not have a functional reset lever. Contact Master Lock or cut the lock off.
How many times can I reset my Master Lock?
You can reset a Master Lock with a reset lever as many times as you want. Each time you use the reset lever, the old combination is erased and replaced with the new one you set.
Will resetting my lock erase any security features?
No. Resetting the combination does not change how the lock works or reduce its security. It simply replaces the old code with a new one.
What should I do if I lose the combination to a lock I can't reset?
Contact Master Lock with your lock's serial number and proof of ownership. They can send you a replacement lock. If you don't have proof of ownership, you'll need to cut the lock off and replace it with a new one.