You cannot reset your lock combination without knowing the original combination you had set. You can buy bolt cutters to break open your lock - but there is another more simple solution if you have 15 minutes to spare. Simply try all the possible combinations from 000 - 999 ( 000, 001, 002, 003 through to 999) It may sound like a laborious task, but it should only take you 15 minutes to go through all the numbers - and it will save you from breaking your lock. So it’s the best solution if you forget your combination code. Try it out instead of breaking your lock and having to buy a new one..