Master Lock locks can be reset by bringing locks with serial numbers to an official Master Lock distributor or retailer to retrieve the combination, or submit a notarized lost combination form to Master Lock by mail. Locks without serial numbers cannot be reset, but Master Lock offers online combination storage for purchasers so that they can store their combinations securely online and retrieve them if they are forgotten. However, if the combination was not recorded when the purchase was made, then Master Lock is unable to provide combination retrieval.
For serialized locks, visit the distributor or retailer with the lock who will then receive the information from Master Lock. The combination will not be released without the physical lock present. Some distributors and retailers charge for doing this, but others don't. Master Lock provides the service free of charge.
Master Lock's website offers a lost combination form that is printable online or downloadable in PDF format. Owners of locks needing combination retrieval assistance print out this form, fill it out and have it notarized before mailing it to the address provided. Requests for up to six locks can be made per form, but it can take up to 6 weeks for the combination to be mailed to the lock owner after submitting the form.