Master Lock 8392EURDPROCOLR Bike Chain Lock

Introduction

The Master Lock No. 8392EURDPROCOLR chain with integrated set-your-own combination lock is designed for securing bicycles, including road, mountain, folding, and electric bikes. It is suitable for both indoor and outdoor use. This lock features hardened steel links for resistance against cutting and sawing, a protective nylon sleeve, and a 4-dial resettable combination for keyless convenience. Its bright red color aids in easy identification.

Product Overview

The Master Lock 8392EURDPROCOLR is a robust security solution for bicycles. Key features include:

• Universal Application: Suitable for various bike types, including road, mountain, folding, and electric bikes.
• Maximum Security: Features hardened steel chain links designed to resist cutting, sawing, and prying attempts.
• Keyless Convenience: Equipped with a four-dial set-your-own combination mechanism.
• Durable Design: A nylon cover protects the bike frame from scratches and helps prolong the life of the chain.
• Dimensions: The chain measures 90 cm in length and has an 8 mm diameter.

Image: The Master Lock 8392EURDPROCOLR bike chain lock, showing its full length and integrated combination lock.

Setup: Setting Your Combination

Your Master Lock combination chain lock is factory preset to 0-0-0-0. To set your own personal combination, follow these steps:

1. Open the lock by rotating the dials to the preset combination (0-0-0-0) and pulling the shackle open.
2. Rotate the shackle 90 degrees counter-clockwise from the open position.
3. Press the shackle down firmly into the lock body.
4. While holding the shackle down, set your desired new 4-digit combination by rotating the dials. Ensure the numbers are aligned with the indicator line.
5. Release the shackle and return it to its original closed position. Your new combination is now set.
6. Scramble the dials to lock the device. Test your new combination immediately to ensure it works correctly before securing your bike.

Image: A close-up view of the 4-digit combination dials and the hardened steel chain links of the Master Lock.

Operating the Lock

To Unlock:

1. Align the dials to your personal 4-digit combination.
2. Pull the shackle away from the lock body to open the chain.

To Lock:

1. Wrap the chain around your bicycle frame and a secure, immovable object (e.g., a bike rack, lamppost).
2. Insert the free end of the chain's shackle into the lock body.
3. Scramble the combination dials to a random set of numbers. This secures the lock and prevents unauthorized opening.

Maintenance

Proper maintenance ensures the longevity and reliable operation of your Master Lock chain lock.

• Nylon Cover Care: The nylon sleeve protects your bike's finish. Regularly inspect the cover for tears or excessive wear. Clean the nylon cover with a damp cloth and mild soap if it becomes dirty.
• Lock Mechanism: Periodically apply a small amount of graphite lubricant or a silicone-based spray to the combination dials and the shackle mechanism. This helps ensure smooth operation and prevents corrosion, especially if used in wet or dusty environments. Avoid oil-based lubricants as they can attract dirt.
• Storage: When not in use, store the lock in a clean, dry place to prevent rust and dirt buildup.

Image: An illustration highlighting the protective nylon cover on the chain, designed to prevent scratches and offer weather resistance.

Troubleshooting

• Lock Will Not Open with Correct Combination:

  Ensure each number on the dials is precisely aligned with the indicator line. Sometimes, slight misalignment can prevent opening. If the lock feels stiff, apply a small amount of lubricant to the dials and shackle mechanism and try again.

• Difficulty Setting New Combination:

  Ensure the shackle is rotated exactly 90 degrees and pressed down firmly into the lock body while setting the new combination. If it's not fully depressed, the combination may not set correctly. Double-check that you are following the steps precisely.

• Lock Feels Jammed or Stiff:

  Dirt, dust, or corrosion can cause the lock mechanism to become stiff. Clean the lock thoroughly and apply a suitable lubricant (e.g., graphite or silicone spray) to the moving parts. Work the dials and shackle to distribute the lubricant.
• Forgotten Combination:

  Unfortunately, if you have forgotten your combination and did not record it, there is no master key or reset code for this type of lock once it has been set. You may need to contact Master Lock customer support for further assistance, though recovery of a forgotten combination is generally not possible for user-settable combination locks.

Specifications

Image: The Master Lock chain illustrating its 90 cm length and 0.8 cm (8 mm) diameter.

Warranty and Support

The Master Lock 8392EURDPROCOLR Bike Chain Lock comes with a limited lifetime warranty, providing assurance against defects in material and workmanship. For warranty claims, technical support, or any product-related inquiries, please contact Master Lock customer service directly. Refer to the official Master Lock website or product packaging for the most current contact information and detailed warranty terms.

You can typically find support information on the official Master Lock website: www.masterlock.com