Log in Social login does not work in incognito and private browsers. Please log in with your username or email to continue. No account yet? Create an account. Edit this Article. We use cookies to make wikiHow great. By using our site, you agree to our cookie policy. Cookie Settings. Learn why people trust wikiHow. Download Article Explore this Article methods. Tips and Warnings. Things You'll Need. Related Articles. Article Summary. Note that a standard digit Master Lock has 64, possible combinations that may open the lock.
If you don't know the serial number, then you can significantly narrow down the number of possible combinations to crack your lock Method 1. If you know the serial number, you can request the combination directly from Master Lock Method 2. Method 1. Turn the dial at least three rotations clockwise first, just to make sure it is clear.
Turn the lock's dial clockwise to zero. Apply pressure on the shackle, which is the curved handle at the top of the padlock. Turn the dial clockwise CW slowly as you press the shackle. If you can't turn the dial at all from the zero point, release the shackle and turn the dial CW just a number or 2 and then try it again.
Find the first sticking point. As you turn the dial CW with tension on the shackle, you will come to the first clockwise stopping point where you can't turn the dial anymore. Make note of where it stops. Sometimes, the dial will stick right on the numbers, but sometimes the sticking point will be between the numbers.
If so, record the number to the half example: Make note of the first counter-clockwise CCW stopping point. Note: Some XXX and xxx locks have a two number sticking range [for example, 28 to 30 and 10 to 12]. A range of 4 and 5 would have a first sticking point of 4.
A range of Each set of numbers that you find will have the same range. For example, one group may be 0. Release the shackle tension and turn the dial clockwise slightly past the first sticking point. Turn the dial clockwise about one number higher from the first sticking point in order to allow you to "escape" that sticking point. Reapply tension to the shackle and continue turning the dial clockwise to find the rest of the sticking points.
You should find 11 more sticking points, for a total of 12 sticking points in one complete turn of the dial. Write all 12 sticking points down. Find the third number of the combination. Look at your list of sticking points and eliminate all those which are not whole numbers that is, cross off any number that ends in 0.
You should eliminate 7 of the 12 numbers with this step. Of the remaining sticking points, choose the number with the unique digit in the "1s" position. Four of the remaining 5 numbers will share the same number in the "1s" place, so for example, if the numbers left on the list are 4, 14, 24, 27, and 34, the number 27 is the only number which does not have a 4 in the "ones" place. This is the third number of the combination. If you only have four numbers remaining and they all share the same digit in the "1s" position, check the "note" above in step 3 about a 2-number range Find the magic number.
Divide the third number of the combination 27 in this case by four, and write down the remainder. Remember that you are only concerned with the remainder, which will always be 0, 1, 2, or 3.
If the third number of the combination is less than four, that is your magic number. The remainder is the magic number. Write it down. Find the possible first numbers of the combination. Add 4 to the magic number 3. Write down the result 7. Now add 4 to that and continue adding 4 to each resulting sum until you have gone completely around the dial once.
Write down each of these numbers. For the example above, the numbers would be 3, 7, 11, 15, 19, 23, 27, 31, 35, and One of these numbers is the first number of the combination. Note: For some XXX locks, this will be the second number of the combination. The next set of numbers will be used as the first. Find the possible second numbers of the combination.
If your magic number is 0 or 1, then add 2 to it. Otherwise, subtract 2 from the magic number. Since the example magic number is 3, subtract 2 and get 1. Write down the answer and add 4 to it. Now add 4 to each resulting sum until you have gone completely around the dial once. In the example, the numbers would be 1, 5, 9, 13, 17, 21, 25, 29, 33, and One of these numbers is the second number in the combination.
Cross out the numbers plus or minus 2 from the third number of the combination. In this example, since 27 is the third number, you can cross 25 and 29 off your list of possible second numbers. Figure out the correct combination by trial and error. You now know all the possible first numbers 3, 7, 11, 15, 19, 23, 27, 31, 35, 39 , all the possible second numbers 1, 5, 9, 13, 17, 21, 33, 37 , and the third number You've just narrowed down 64, combinations to only Try every possible combination until you find the right one.
For many Master Locks, you can use the following to help figure out the first number. Apply pressure on the shackle, Turn the dial counter-clockwise CCW slowly as you pull the shackle. Once per rotation it should stick. Look at the number when it sticks and add 5 to that value. Find the number you wrote down for the first digit in step 9 that is nearest the sum. Speed tip: You don't have to clear the lock to try each combination.
You only have to clear the lock when the first or third number exceeds the second for the first time. The reason this works is the disk for the second digit isn't impacted when we rotate CCW, so we are effectively just setting the 2nd number to a bigger value. Method 2. Wait to fill out your form until you meet with a notary public. Take your form to a notary public and ask to have the form notarized. Fill out the form in the presence of the notary public.
Have the appropriate ID that you'll need to confirm your identity. Pay the notary's fee. Master Lock won't reimburse you for the charges. Photocopy your lock's serial number onto a piece of paper. The photocopy should show that your lock isn't attached to anything.
Then, hand write the serial number beneath the picture of the lock. Mail your notarized form and photocopy to: Master Lock Warehouse W. La Quinta Rd. Wait 4 to 6 weeks. Master Lock will process your request and send you your new combination. This depends on whether or not the Master Lock in question is a "resettable" lock.
It also depends on whether it is in the open or closed position before you attempt to reset it usually it will need to be in the open position. Not Helpful 6 Helpful 5.
While still keeping even pressure on the lock you now need to rotate each of the dials slightly in each direction. You will quickly find the dial that is the hardest to rotate which is the dial you will begin with in my case it was 'C'.
Start to gradually rotate the dial that is the until you hear a resounding 'click' and feel the shackle move upwards slightly. Check the dial and make a note of the number that it 'clicked' on then continue to gradually rotate that same dial to double-check in my case dial 'C' was the hardest to rotate and it 'clicked' on '7'. If it continues to make a 'click' sound on the same number every rotation then you have successfully figured out the first digit of the code and you can now move onto figuring out the next dial.
Once again rotate each of the remaining dials to find which is the hardest to rotate in my case it was dial 'B'. Repeat the same process you used on the first dial until you have figured out the second digit of your code in my case it was '1'. If you have a three digit combination lock like what I have demonstrated with, you should now only have one more dial to figure out. All you will need to do now is keep constant pressure on the lock and slowly twist the remaining dial in a full rotation.
As you rotate the dial the last remaining digit needed for the code will match up with the other two you had previously figured out and the shackle should open. Reply 5 months ago. Hmm I got , but I'll have to check these other 2 answers posted here. The instructions could be more clear, like using specifics like "at least" or "only".
Reply 7 months ago. Reply 1 year ago. I need to try this. I have a lock that I deciphered some time ago and I was so proud of myself. I found it the other day and couldn't remember the combo. Prolly should have written down the combo somewhere.
Reply 4 years ago. Reply 2 years ago. I've successfully found the combination for this lock I have reset twice, though this third time isn't working. My fingers are raw. It feels like it has a lot of false sets? I'm new to this, so I'm not sure if that's true or not. Brand is Disecu. If you just bought it the default code is and if it is unlocked turn it to a degree angle and hold the ring down, then set it and after that pull it up and lock to see if the combination work Hope this help you!
If you need help just find me. Question 7 months ago. Question 2 years ago. Answer 9 months ago. The top of the lock is what we like to call the reset. These lock's are made to be reset if you please.
The way that you use it is to click the button, set the combination that you want and then reset it.
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