You may have a combination lock that is broken and you want to open it so you can get your safe back. This guide will teach how to safely un-lock the master combination of your lock with the correct number of tumblers in order.

The “master lock combination serial number chart” is a guide that includes how to open a master combination lock. It also includes the appropriate combinations for different types of locks.

Padlocks are a practical method to keep your belongings secure. The majority of individuals choose a master lock, which provides them with more protection against intruders. Many others, on the other hand, have found themselves at a fork in the road after forgetting their master lock combination. A master combination lock may be opened in a variety of ways. Bolt cutters, shim, blowtorch, and even locksmiths are used by some persons to unlock padlocks in a damaging manner. However, you don’t have to use the damaging approach to unlock your master lock since an older method, combination cracking, is a safer option. This is the most elegant and non-destructive method of implementation. It’s worth noting that you may still employ the old-school way and spend many hours trying to find the perfect mix. This has been a very long time. The following is a step-by-step instruction to opening a master combination lock in less time. A 40-digit master lock has 64000 possible combinations. Randomly cracking it would take an average person 177 hours. To properly access your master lock, follow these easy steps.

## 1. Figure out what model of Master Lock you have.

In order to breach a master lock, you must first figure out what model it is. The reason for this is because you could spend hours attempting to break a master lock, just to discover that the procedures you’re using don’t work. In other words, depending on their setup, various models may need extra or separate processes. As a result, you must authenticate your lock model, which may be found on the back of your lock. It’s likely that you won’t be able to breach your master lock in certain circumstances, such as if the model number begins with 800 or 902. However, if your model starts with these numbers, you should not be discouraged from attempting since it may work, albeit this is not guaranteed.

## 2. Remove the Lock

When breaking any lock, the first guideline is to set a standard point from which to begin the procedure. When it comes to the master lock, the first step is to clear it. To clear the lock, start by rotating the dial three or four times and making sure you pass the zero point each time. You should spin counterclockwise and stop on the first number in the combo. Next, spin the dial clockwise for one complete round, passing the first number you stopped at and arriving at the second number in the combination.

## 3. Solve the Combination’s third number

After clearing the lock as part of the cracking phase, check for the third number in your combination. This may come off as a little strange. You may be thinking, “Why don’t we start with the first number in the combination?” However, you must begin with locating this number since it has just one possible solution, although the other numbers have several. So, how do you figure out the third number? On begin, apply strain to the master lock’s shackle. Note that, depending on the padlock, shackles come in a variety of lengths and widths. To add tension, you’ll need to use one hand to grab the lock. The shackle should then be pushed upwards with your finger. At this point, continue to apply upward pressure while gradually spinning the dial in an anticlockwise manner. When you apply force to the dial, it is likely to get stuck at zero, preventing you from spinning it. If this occurs, don’t panic; all you have to do is relax the strain on the shackle and turn the dial to the first or second number on the list in a counterclockwise manner, which means to the left. Reapply upward pressure on the shackle and attempt to twist the dial anticlockwise once more. The dial will then depart the zero point, which is where it might have been stuck.

## 4. Locate the first sticky point

As you circle the lock’s dial in the anticlockwise direction as described in the previous step, you will reach a point where you can no longer freely revolve the dial. The dial is caught in a groove between two digits, as you can see. However, while maintaining pressure on the shackle, try turning the dial slightly clockwise (right) then back to the same position. This is your first ever sticking range. You should make a mental note of the two rest stops in this grove. Let’s say the dial stopped at 5 and 7 while spinning in the anticlockwise direction and stopped at 5 and 7 when spinning in the clockwise way. This suggests you have a sticking range of 5 to 7. The next step is to locate the sticking point, which is number 6, which is the mean of the sticking range. It’s conceivable that the dial will come to a halt halfway through (a number with a decimal point). In our example, the dial may halt between 5.5 and 7.5, indicating that the sticking point is 6.5.

## 5. Locate the second sticking point.

After locating the first stumbling block, our next goal is to locate the second. To do so, first release the shackle tension and then spin the dial slightly clockwise beyond the first sticking point, which in our case is 6 or 6.5. As a result, the turning should occur once the greatest number of the 1st sticking point’s sticking anger has been reached. It should be beyond number 7 or 7.5, if we apply our example above. This indicates that you’ve gotten through the initial snag. You may now repeat the procedure of obtaining the sticking point by reapplying upward strain on the shackle and twisting the dial counterclockwise until it jams again. You’ll get the second sticking point this way.

## 6. Locate the Remaining Sticking Points

After obtaining two of the twelve sticking points, continue the technique to acquire the remaining ten by cracking the third number in the combination. As you did with the prior two, make a list of all the sticking spots.

### Using the 12 Sticking Points, crack the third number in the combination.

It’s time to break the third number now that you’ve noted the 12 stumbling blocks. Here’s how to go about doing it. Seven of the twelve numbers are fractions, whereas five are whole numbers, as you may have seen. You should remove the fractions from the equation and only use whole integers. If the procedures were followed correctly, you will see that these numbers all finish in the same digits, with the exception of one, which is known as the fortunate number. One may use the numbers 1, 11, 21, 29, and 31 as an example, with 29 being our separate number and hence the third number. If all of your numbers but one do not finish in the same number, you should repeat the operation. It’s important to note that if you have two numbers that finish in a different number from the rest, determining the lucky number might be difficult. The process may not provide results if assumptions are made.

## 7. Solve the Combination’s First Number

As previously said, cracking the other numbers gives you 10 options. You must first divide the separate number or the third number by four. It’s dividing 29 by four in our situation. After you’ve divided, you’ll be concerned with the remaining, which is 1. You must divide 29 by 28 and leave one as a residual since it cannot be divided by four. It’s also worth noting that the remaining you obtain should be no more than four digits (0, 1, 2, and 3). If you obtain a different leftover than the four you’re expected to get, you’ve made a mistake. We can acquire the 10 potential numbers by adding 4 to the remainder (1) in our example. When you multiply four by one, you get five; when you multiply four by five, you get ten, and so on. This is what you should receive in our case: 1, 5, 9,13,17,21,25,29,33, and 37. You now have the 10 potential numbers, as well as the third and second numbers, which you will need later.

## 8. Solve the Combination for the 2nd Number

You should be able to crack the second number now that you’ve cracked the first. You go back and examine the residual you used in the previous stage to break the second number of your combination. The remaining in our instance was one. You must multiply two by one (1+2). You should note, however, that if your leftover was two or three, you would have been required to deduct two from it. Add four to whatever you receive from addition or subtraction, just as you did with the residue in the first step when cracking the first number. For instance, we had one as a leftover in our situation. As a result, the answer should be 1+ 2, which equals three. You add four to number three and continue adding the results until you have all 10 potential numbers. You should, however, make three your first number on the list. Here’s what you should have in our case: 3,7,11,15,19,21, 25,29,31,35, and 39. The second set of 10 probable numbers is now available.

## 9. Figure out the Combination

You’ve figured out the first and second numbers, with the correct solution being these 10 digits in both instances. You also have the third number, which in our instance was the fortunate number (29). You’ve now decreased the total number of potential combinations from 64,000 to 80. As a result, it’s now simple since you may experiment with various combinations until you find one that works. This is how you should go about doing it. Following the calculations we did before, you rearrange the results by inserting the first possible ten numbers, the second possible ten numbers, and lastly the fortunate number as we have described below:

- 1, 5, 9, 13, 17, 21, 25, 29, 33, 37,38,39,39,39,39,39,39,39,39,39,39,39,39 (First 10 possible numbers in the combination) 3,7,11,15,19,21, 25,29,31,35, 39; 3,7,11,15,19,21; 25,29,31,35, 39; 3,7,11, (Second 10 possible numbers in the combination) 29. (the third number in the combination)

Then you should start playing with the numbers. In our situation, we start with 1,3,29, then 1,7,29, then the previous number before moving on to the second number on the list, which is 5,3, 29, then 5,7,29, and so on. If you’re fortunate, you won’t have to go through all 80 alternatives before solving the puzzle.

## When experimenting with different combinations, there are a few things to keep in mind.

Before testing the combinations, you must first clear the lock, which you may do by spinning the dial three times in a clockwise manner. After clearing the lock, spin clockwise until you reach the first number, which in this instance is 1. Next, move the dial anticlockwise beyond your second number, which in our instance is 3, until you reach it again. Finally, twist the dial counterclockwise until you reach the third number, which in our instance is 29. The initial combination may not work; nonetheless, since you don’t know which combination will work for you, you should attempt all of them without skipping any. It won’t take long for you to figure out the magic combination, indicating that you’ve cracked the master lock.

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The “master lock serial number lookup” is a guide on how to open a master combination lock. This guide includes the steps that need to be taken in order to unlock a master combination lock.

### Frequently Asked Questions

#### How do I open my Master Lock if I forgot the combination?

A: You should contact a locksmith to tell you how to open your lock, they can be found on the internet.

#### How do you unlock a 3 digit Master combination lock?

A: You need to use a combination of two sets of numbers. The first set must be 1-9, the second set can be any number between 0 and 9.

#### How do you open a master lock step by step?

A: The first thing you should do is make sure that the master lock has no batteries. If it does, then take them out and hold on to them until after youve finished opening your door. After this, look at where the key goes inside of the lock and use a screwdriver if necessary to remove any screws or pins holding in place one side of the keyway. Once removed, push down hard on that section and pull up gently once more with your other hand while pushing down again as well. With pressure being applied both ways simultaneously, lift open just enough for yourself to fit through using one arm still gripping onto whatever sections are left behind by whichever pieces fell off when you opened around its edges

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