Master Lock Manuals & User Guides

User manuals, setup guides, troubleshooting help, and repair information for Master Lock products.

Tip: include the full model number printed on your Master Lock label for the best match.

Master Lock manuals

Latest posts, featured manuals, and retailer-linked manuals for this brand tag.

Master Lock 5401EURD Key Storage Compartment Instruction Manual

August 20, 2025

Master Lock 5401EURD Key Storage Compartment Product Specifications Model: 5401EURD Product Type: Key Storage Compartment Combination: Factory set to 0-0-0-0 Wall Mountable: Yes Weather Resistance: Yes Product Usage Instructions Opening the Key Storage Compartment Door: Open the shutter door to…

Brand: Master Lock

Master Lock 8114D Combination Cable Lock Instructions

August 13, 2025

Master Lock 8114D Combination Cable Lock Simple to Set Your Own Combination Specifications Feature Details Combination Dials 4-digit combination Knob Rotation 90 degrees clockwise and counterclockwise SIMPLE TO SET YOUR OWN COMBINATION Instructions for use Step. 1 Set the combination…

Brand: Master Lock

Master Lock 146D Pink Covered Aluminum Keyed Padlock Instructions

July 29, 2024

Master Lock 146D Pink Covered Aluminum Keyed Padlock Product Information Specifications: Product: Padlocks Recommended Cleaning Frequency: Every 3-6 months Ideal Lubricant: Master Lock's PTFE Lock Lubricant 2300D and 2311 Components: Precision locking and keying components Usage Environment: Suitable for various…

Brand: Master Lock

Master Lock M176XDLH Outdoor Combination Lock Instructions

April 3, 2024

Master Lock - Model #M176XDLH How to Change the Combination Open lock with the factory set or previously set combination. The lock must be set to the current combination, or you cannot reset it. Note: the shackle must be in…

Brand: Master Lock

Master Lock 5480EURD Portable Lock Box Instructions

February 25, 2024

Master Lock 5480EURD Portable Lock Box 5480 Portable Lock Box 5481 Wall Mount Lock Box 5482 Portable Cable Lock Box 5480 Portable Lock Box To open lock box Combination is factory set to 0-0-0-0 Open dial cover & enter current…

Brand: Master Lock

MASTER LOCK 4687DNKL Combination Locks Padlock Instruction Manual

January 29, 2024

MASTER LOCK 4687DNKL Combination Locks Padlock Instruction Manual Transportation Security Administration (TSA) baggage screeners are trained to recognize the Travel Sentry® logo on TSA – accepted locks. They have access to a secured set of codes and tools which allow…

Brand: Master Lock

MASTER LOCK 43352951 Portable Key Safe Instruction Manual

January 8, 2024

INSTRUCTIONS FOR PORTABLE KEY SAFE RESET CODE STEPS 43352951 Portable Key Safe Diol the default password (0-0-0-0) to open the key box Push the RESET lever from A to B Set your own combination Push the RESET lever from B…

Brand: Master Lock

MASTER LOCK 5401EURD Key Safe Wall Mounted User Manual

November 9, 2023

MASTER LOCK 5401EURD Key Safe Wall Mounted Product Information The product is a key storage compartment with a combination lock. It is designed to securely store keys and protect them from unauthorized access. The key storage compartment has a shutter…

Brand: Master Lock

Master Lock 630D Combination Lock User Guide

October 20, 2023

Master Lock 630D Combination Lock How to Change the Combination Operating Instructions: This lock is preset to open at 0-0-0. To set your own combination: Set dials so 0-0-0 aligns with the stripe; lift shackle. Turn shackle 90° (1/4 turn).…

Brand: Master Lock

Master Lock 81k9cP0QxIL Bike Cable Lock Instruction Manual

September 20, 2023

Master Lock 81k9cP0QxIL Bike Cable Lock Product Information The 8114D lock is a combination lock designed to secure your belongings. It features a preset combination of 0-0-0-0, but allows you to set your own personalized combination for added security. Product…

Brand: Master Lock

Master Lock ProSeries and Keying Technical Guide

service manual • July 19, 2026

Technical guide for Master Lock keying systems, including ProSeries, EDGE Key Control, and Python plug rekeying procedures, pin calculations, and service instructions.

Brand: Master Lock

Master Lock 5480, 5481, 5482 Series Instruction Manual

manual • June 30, 2026

Comprehensive instructions for operating, setting combinations, and mounting the Master Lock 5480, 5481, and 5482 series lock boxes.

Brand: Master Lock

Master Lock Cylindrical Lock Installation and Integration Manual

manual • May 15, 2026

Comprehensive installation, setup, and technical integration guide for Master Lock Cylindrical Lock series (MCB614, MCB624, MCB634, MCB644) and Z-Wave/Zigbee smart modules.

Brand: Master Lock

Master Lock Mortise Lock MCM614/MCM624/MCM634/MCM644 Installation and User Manual

manual • May 15, 2026

Comprehensive installation, programming, and troubleshooting guide for Master Lock Mortise Locks (MCM614, MCM624, MCM634, MCM644). Includes Z-Wave and Zigbee integration instructions.

Brand: Master Lock

Master Lock Mortise Lock MCM614/624/634/644 Installation and User Manual

manual • May 15, 2026

Comprehensive installation, setup, and programming guide for Master Lock Mortise Locks (MCM614, MCM624, MCM634, MCM644). Includes Z-Wave/Zigbee configuration, troubleshooting, and regulatory information.

Brand: Master Lock

Master Lock Mortise Lock Installation and Setup Guide

manual • May 15, 2026

Comprehensive installation, setup, and programming guide for Master Lock Mortise Locks (MCM614, MCM624, MCM634, MCM644) and Yale Pro 2 Smart Modules.

Brand: Master Lock

Master Lock Cylindrical Lock Installation and Z-Wave Integration Guide

manual • May 15, 2026

Comprehensive installation, setup, and Z-Wave integration guide for Master Lock Cylindrical Locks (MCB614, MCB624, MCB634, MCB644) and Yale Pro 2 smart locks.

Brand: Master Lock

Master Lock Mortise Lock MCM614/MCM624/MCM634/MCM644 Installation and User Manual

manual • May 15, 2026

Comprehensive installation, setup, and programming guide for Master Lock Mortise Lock models MCM614, MCM624, MCM634, and MCM644, including Z-Wave and Zigbee connectivity instructions.

Brand: Master Lock

Master Lock Security Safe Owner's Manual

Owner's Manual • April 18, 2026

User manual for Master Lock security safes (models X031ML, X041ML, X055ML, X075ML, X125ML), covering key lock and digital combination models, installation, operation, programming, troubleshooting, and bolt-down instructions.

Brand: Master Lock

Master Lock 5440D/5441D Bluetooth Lock Box: Instructions and Setup Guide

Instruction Manual • December 30, 2025

Detailed instructions for the Master Lock 5440D/5441D Bluetooth Lock Box. Learn how to unlock with your mobile device or keypad, replace batteries, and perform emergency unlocks. Includes setup and troubleshooting.

Brand: Master Lock

Master Lock Door Hardware Technical Manual Version 4.12

Technical Manual • December 20, 2025

Comprehensive technical manual for Master Lock door hardware, detailing Grade 2 and Grade 3 residential and commercial products, BumpStop® and NightWatch® technologies, rekeying procedures, and service kits.

Brand: Master Lock

Master Lock ProSeries Commercial Security Products Technical Manual

Technical Manual • December 18, 2025

This technical manual provides detailed service procedures, component breakdowns, keying information, and specifications for Master Lock's ProSeries line of commercial security padlocks and related products.

Brand: Master Lock

Master Lock Model 770 Heavy-Duty Hidden Shackle Hasp Instruction Manual

770 • July 17, 2026 • Amazon

Comprehensive instruction manual for the Master Lock Model 770 Heavy-Duty Hidden Shackle Hasp, providing details on installation, operation, maintenance, and specifications for secure applications on trucks, trailers, and vans.

Brand: Master Lock

Master Lock M15BEURDLF Heavy Duty Laminated Padlock Instruction Manual

M15BEURDLF • June 8, 2026 • Amazon

Comprehensive instruction manual for the Master Lock M15BEURDLF heavy duty laminated padlock. Covers setup, operation, maintenance, troubleshooting, specifications, and warranty information for this weatherproof, keyed security lock.

Brand: Master Lock

Master Lock Padlock Model 6327EURD Instruction Manual

6327EURD • June 7, 2026 • Amazon

Comprehensive instruction manual for the Master Lock Padlock Model 6327EURD, covering setup, operation, maintenance, troubleshooting, and specifications for secure use.

Brand: Master Lock

Master Lock 4688D TSA Approved Combination Luggage Lock User Manual

4688D • May 2, 2026 • Amazon

Official user manual for the Master Lock 4688D TSA Approved Combination Luggage Lock. Learn how to set your combination, operate, maintain, and troubleshoot your lock. Includes product specifications and warranty information.

Brand: Master Lock

Master Lock 1534D Word Combination Padlock Instruction Manual

1534D • April 25, 2026 • Amazon

This instruction manual provides detailed guidance for the Master Lock 1534D Set Your Own Word Combination Padlock, covering setup, operation, maintenance, troubleshooting, and specifications. Learn how to set your personalized word or number combination for enhanced security.

Brand: Master Lock

Master Lock 647D Black Combination Padlock User Manual

647D • April 21, 2026 • Amazon

Comprehensive user manual for the Master Lock 647D Black Combination Padlock, including setup, operation, features, specifications, and warranty information for this durable 3-digit customizable lock.

Brand: Master Lock

Master Lock 6121KALJ 10G227 PRO-Padlock Instruction Manual

6121KALJ 10G227 • April 19, 2026 • Amazon

Instruction manual for the Master Lock 6121KALJ 10G227 PRO-Padlock, covering setup, operation, maintenance, troubleshooting, and specifications.

Brand: Master Lock

MASTER LOCK Keyed Padlock Model 4140-2341 Instruction Manual

4140-2341 • April 16, 2026 • Amazon

Instruction manual for the MASTER LOCK Keyed Padlock, Model 4140-2341. This guide covers setup, operation, maintenance, troubleshooting, and specifications for the durable brass padlock.

Brand: Master Lock

Master Lock 653D Resettable Combination Locker Lock User Manual

653D • April 16, 2026 • Amazon

Comprehensive user manual for the Master Lock 653D resettable 4-digit combination locker lock, including setup, operation, maintenance, and specifications.

Brand: Master Lock

Master Lock 653D Set-Your-Own-Combination Padlock Instruction Manual

653D • April 16, 2026 • Amazon

Comprehensive instruction manual for the Master Lock 653D Set-Your-Own-Combination Padlock. Learn how to set and reset your combination, operate, and maintain your padlock for optimal security.

Brand: Master Lock

Master Lock 192D Translucent Front Access Padlock Instruction Manual

192D • April 12, 2026 • Amazon

Comprehensive instruction manual for the Master Lock 192D Translucent Front Access Padlock, covering setup, operation, maintenance, and specifications.

Brand: Master Lock

Master Lock 1175LHSS ProSeries Brass Combination Padlock User Manual

1175LHSS • April 9, 2026 • Amazon

Official user manual for the Master Lock 1175LHSS ProSeries Brass Combination Padlock. Learn how to set and reset your combination, understand product features, specifications, and maintenance for this heavy-duty outdoor padlock.

Brand: Master Lock