646T Master Lock set your own combination padlock.
This lock is preset at the factory to open at 0-0-0. To set your own combination:
- With dials at 0-0-0, pull out shackle.
- Turn shackle counterclockwise 90 degrees and press it down.
- Continue pressing shackle and turn another 90 degrees.
- Set the dials to your own combination.
- Turn the shackle clockwise back to the original 90 degree position. Lift and return shackle to the closed position.
manufacturer website - http://www.masterlock.com/