I found this rather interesting video on youtube which I will embed here, and also typed it out (for my own reference) as well, which will make it easier for you guys to copy/paste this into word or something for your own saved reference.  I found this one helpful as every other “trick” I found to discovering your combi padlocks numbers involved having the lock already open and basically just watching the wheel pack, which really isn’t a trick at all.  Thanks to HeaviestJ on YouTube for sharing this trick!

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Note for Step One: (Faster) This takes a bit of practice and feel, but I have found it is much faster to determine the last digit of the combination as follows.

Use the below steps for finding the stop points on the dial, using tension on the locking bar. Starting from 0, work around each stop point putting just enough pressure to find the middle digit as listed, but continue to apply tension until you feel “drag” on the dial, you should be able to eventually lock up the dial in fact.

Continue with this all the way around the dial. However, one of the 12 stop points will have NO drag no matter how much tension is applied (as the fence is hitting the contact points on either side of the wheel notch.)

This is the final digit of the combination.

Written steps for above video. (Pretty sure I got them right)

Step 1

Use tension to find the numbers that the dial will stop on during a full rotation of the dial from 0 and back to 0.  Write these numbers down. You will end up with 12 numbers.

Write down these numbers, we will use this lock from the video’s numbers.

3
6.5
9.5
13
16.5
20
23
26.5
29.5
33
36.5
39.5

You should have 7 numbers ending in .5 and 5 integers.

Take the 5 integers which are.

3

13

20

23

33

3

13

20

23

33

Now remove all numbers that end in the same digit, which in this case would leave us with the number 20. This is the 3rd number in your combination.

We now have the number 20 as our 3^rd number.

Step 2

Using the number you received from step one above,  (in this case 20) divide this number by 4.

So 20/4 = 5.

In this case we received no remainder.

If you DO receive a remainder, write it down. It will either be, 0, 1, 2, 3.

If for example we had an ending digit of 18, when dividing by 4, we would have a remainder of 2.

This is the number we will use to find the final two digits of the combination.

Since we had no remainder with our number of 20, we will start with 0 (using the 0,1,2,3 corresponding to the number of remainders in the 3^rd digit division), and add 4 to it until you reach the last number possible in the master lock, which in this case would be 39.

This gives us:  0, 4, 8, 12, 16, 20, 24, 28, 32, 36

If we had a remainder of 1, we would have started with 1 getting: 1, 5, 9, 13….

With a remainder of 2, we would start with 2 getting: 2, 6….

Step 3

Now working off of the numbers we acquired earlier we have ten numbers.

0, 4, 8, 12, 16, 20, 24, 28, 32, 36

Any of which can be the first number of the combination.

Now

If the remainder we had earlier from the four division is either a 0 or 1 add 2 to that number. Giving:

0 = 2

1 = 3

If the remainder is either a 3 or 4, subtract 2, Giving:

3 = 1

4 = 2

Now since we had a remainder of 0, we will start with 2, and 4 to each number so:

2, 6, 10, 14, 18, 22, 26, 30, 34, 38

Which gives us ten numbers, any of which can be the 2^nd number of the combination.

We have now worked 34,000 possible combination’s down to 100.  So:

First Digit is one of these ten digits.

0, 4, 8, 12, 16, 20, 24, 28, 32, 36

Our 2^nd digit is one of the next ten digits which we worked out with the remainder addition/subtraction step:

2, 6, 10, 14, 18, 22, 26, 30, 34, 38

And our last digit is 20.

Start from the first digit and work your way through them, with the started combination being 0, 2, 20, the next being 4, 2, 20, 8, 2, 20 and so on, until you have your combination to your lock, this will take a few minutes but is certainly faster than trying 34,000 combinations!

Thanks to HeaviestJ from YouTube for this awesome trick!