How do you change combination for fire fyter ff250?

To change the combination on a Fire Fighter FF250 lock, first, ensure the lock is in the open position. Locate the reset lever or button, usually found on the side or back of the lock. Press or slide this lever while setting your new combination by turning the dials to your desired numbers. Finally, release the lever to save the new combination, and test it to ensure it works correctly before securing the lock again.