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Resetting Your Combination

To reset your combination, you will need to know your current combination.

175 & 176

643D

653

• Here are the instructions for changing the combination on you model 653D lock. This lock is preset at the factory to operate at 0-0-0-0.

1. With dials at 0-0-0-0, pull out the shackle
2. Turn shackle counterclockwise 90 degree (1/4 turn)
3. Continue pressing shackle down and turn another 90 degree (1/4 turn)
4. Set the dials to your own combination
5. Turn shackle clockwise back to the original 90 degree position, lift and return shackle to closed position
6. Be sure to record your NEW combination as you are the only one that knows it!

875, 975

• Instruction sheet: https://cdn.masterlock.com/masterlock/resources/documents/pdfs/7000-0081--875-and-975-Combination-Reset-Instruction-Sheet.pdf

1175, 1177, 1178

1500iD

1535D, 1535DWD

1590D