How to reset an open master lock
I have lost the combination of my master lock, which is already open, and I am scared to lock it for I do not remember the combination. Please let me know how to reset the combination in order to use the lock.
Locks & Locksmithing - Master Lock - 5400d: Portable Select Access Key Storage Lock
Answers & Comments
Your answer is on this site
http://www.masterlock.com/faq/lostcombo.shtml