Master Lock® Lost/Reset Combination

Combination locks fall into two main types: retrievable and resettable. Retrievable locks have a fixed combination set by the manufacturer, while resettable locks let users change their combination for optimized security.

This blog covers how to retrieve your lost fixed combination padlock and how to reset your combination padlocks. 

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Have you forgotten or lost your combination?

A retrievable combination lock has a fixed combination set by the manufacturer, which is unchangeable but retrievable if lost. Locker locks like the Master Lock 1525 combination padlock comes with a preset combination that can be retrieved with the serial number located on the back or on the packaging. 

If you've lost your locker lock combination, review how to retrieve your code here.

Need to reset your combination lock? 

A resettable combination lock allows the user to set and change their own combination whenever they want, providing heightened security.

This blog covers the following resettable combination lock models: 

• Master Lock 175, 176, 178
• Master Lock 643D
• Master Lock 653
• Master Lock 875 & 975
• Master Lock 1175, 1177, 1178
• Master Lock 1535 & 1535DWD
• Master Lock 1534D
• Master Lock 1550
• Master Lock M175XD
• Master Lock 8114 Combination Bike Lock
• Set Your Own Combination Cable Lock

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

Master Lock 175, 176, 178

General Security  |  Solid Brass  |  Advanced Durability

The Master Lock 175, 176, and 178 are all part of Master Lock's line of resettable combination locks, commonly used for a variety of security needs.

Master Lock 643D

General Security  |  Nickel Plated Steel  |  Advanced Durability

The Master Lock 643D is a combination padlock with 4-digit dialing that allows thousands of possible numeric combinations. This lock is ideal for securing cabinets, boxes, and other small items.

Master Lock 653

General Security  |  Laminated Steel  |  Basic Durability

The Master Lock No. 653D Set Your Own Combination Padlock features a robust 2-inch wide metal body that enhances durability and strength. This model allows for easy setting and resetting of numeric combinations, catering to user preference.

How to change the combination:

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!

Master Lock 875 & 975

General Security  |  Solid Brass  |  Advanced Durability

The Master Lock No. 875 and 975 are robust padlocks with brass bodies. Both feature resettable 4-digit combinations, providing ample security options without the need for a reset tool. The 875 boasts a roller pin mechanism and shackle seal for weather resistance, while the 975 includes a dual deadlocking feature for enhanced security.

View the instruction sheet for how to reset the 875 & 975 locks here

Master Lock 1175, 1177, 1178

General Security  |  Solid Brass  |  Advanced Durability

The Master Lock No. 1175, 1177, and 1178 are all sturdy combination padlocks with brass bodies. They feature resettable 4-digit combinations, offering users reliable security with customizable convenience.

Master Lock 1535D & 1535DWD

General Security  |  Solid Brass  |  Advanced Durability

The Master Lock No. 1535D, and 1535DWD are modern combination padlocks with durable designs. Each lock offers a user-settable 4-digit combination for personalized security. The 1535D and 1535DWD provide traditional dial combination entry, with the 1535DWD also featuring weather-resistant construction for outdoor use.

Master Lock 1534D

General Security  |  Hardened Steel  |  Great Durability

The Master Lock No. 1534D provides a customizable letter and number combination system for personal belongings, like school or gym lockers, ensuring security and personalization.

Master Lock 1550

Enhanced Security  |  Mixed Metal  |  Great Durability

The Master Lock No. 1550 padlock blends compact design with strong security features, ideal for small lockers or personal cases. Its small size and tough build are perfect for securing personal items without added bulk.

Here are the instructions on how to reset the combination on your backpack lock (which is pre-set at the factory to open to combination 0-0-0):

1. Align dials to preset combination (0-0-0).
2. While pushing in button located on the bottom of the lock, turn the dials to any combination you choose.
3. Release button only after you have finished choosing your combination.
4. The lock is now ready to be used. To change your new combination again, dial your combination and repeat steps 2-3.
5. Don't forget to write your combination down and keep it someplace safe!

Master Lock M175XD

Maximum Security  |  Solid Zinc  |  Advanced Durability

The Master Lock No. M175XD padlock boasts superior security and durability. Plus, its design includes a dust cover for the combination dials, ensuring reliability in harsh environments like storage units, gates, and sheds.

View instructions on how to change/reset the combination for M175XDLF Combination Lock.

Master Lock 8114 Combination Bike Lock

Protective Security  |  Braided Steel  |  Advanced Durability

The Master Lock No. 8114D is a sturdy cable lock designed for versatile security needs. With an integrated keyed locking mechanism for added pick resistance, it's perfect for securing bicycles, motorcycles, outdoor gates, and more, offering both security and flexibility.

To set the combination on the #8114 Set-Your-Own combination bike lock, follow these steps:

1. Open the lock & withdraw the cable.
2. Turn the collar (circular, ribbed & in front of the combination wheels) - clockwise until it stops (about halfway around).
3. Set the combo wheels to your desired combination.
4. Turn the collar counterclockwise until it stops at its original position.
5. Record your new combination in a safe place.

Set Your Own Combination Cable Lock

Protective Security  |  Braided Steel  |  Advanced Durability

This cable lock provides personalized and flexible security with its Set Your Own Combination feature, allowing users to choose a numeric or letter code for easy recall and increased security. It's versatile, ideal for securing bikes, outdoor furniture, or sports equipment, providing portability and peace of mind.