One way is to use a sharp object like a paperclip or pin to try and feel for the correct numbers in the mechanism. If not, there are a few other ways to try to open the lock. First, if you have the owner’s manual for the lock, it may have the factory default code listed in it. If you forgot the combination to your lock, there are a few ways that you can try to open it. How Do You Open a Combination Lock If You Forgot the Code?