How do you change the combination on a master lock and the product number is 2811M?

To change the combination on a Master Lock 2811M, first, open the lock using the current combination. Then, locate the reset lever on the side of the lock; you may need to use a pen or a small tool to push it down. While holding the reset lever down, turn the dials to your desired new combination. Finally, release the reset lever, and your new combination will be set.