Introdución
This manual provides essential instructions for the proper setup, operation, and maintenance of your Master Lock 6421LJWO Keyed Padlock. Please read these instructions carefully before using the product to ensure optimal performance and security.

An image of the Master Lock 6421LJWO Keyed Padlock, featuring a black rectangular body and a silver U-shaped shackle.
Configuración
Contido do paquete
- One Master Lock 6421LJWO Keyed Padlock
- Two operating keys
Inspección Inicial
Before first use, inspect the padlock for any signs of damage. Ensure the shackle moves freely and the key inserts smoothly into the keyway. Verify that the provided keys operate the lock correctly.
Instrucións de funcionamento
Desbloqueando o candado
- Insert the key fully into the keyway.
- Turn the key clockwise approximately one-quarter turn (90 degrees).
- Pull the shackle upwards to open the padlock.
- Retire a chave.
Pechando o cadeado
- Align the shackle with the padlock body.
- Push the shackle firmly downwards until it clicks into place.
- Ensure the shackle is securely locked by attempting to pull it open without the key.
- The key can be removed only when the padlock is in the locked position.
Mantemento
Lubricación
To ensure smooth operation and prolong the life of your padlock, periodically apply a small amount of graphite lubricant or a silicone-based lubricant to the keyway and shackle mechanism. Avoid using oil-based lubricants as they can attract dirt and debris, potentially hindering operation.
Limpeza
Wipe the padlock body with a clean, dry cloth to remove dirt and grime. For stubborn dirt, a mild soap solution can be used, followed by thorough drying to prevent corrosion.
Resolución de problemas
A chave é difícil de inserir ou xirar
- Ensure the key is inserted correctly and fully into the keyway.
- Apply lubricant to the keyway as described in the Maintenance section.
- Check for any debris or foreign objects in the keyway that might be obstructing the key.
O grillete non abre nin pecha con suavidade
- Apply lubricant to the shackle mechanism where it enters the padlock body.
- Ensure the key is fully turned when attempting to open the shackle.
- Check for any physical obstructions preventing the shackle from moving freely.
Chaves Perdidas
If keys are lost, contact Master Lock customer support for assistance. Note that this model uses a unique key for each padlock, and replacement keys may require specific information about your lock, such as the key code if available.
Especificacións
| Marca | Master Lock |
| Número de modelo | 6421LJWO |
| Tipo de bloqueo | Bloqueo de teclas |
| Material do corpo | Steel (Laminated Finish) |
| Material de grillete | Boro |
| Diámetro do grillete | 5/16 polgadas |
| Shackle Height | 2 1/2 polgadas |
| Shackle Width | 7/8 polgadas |
| Body Dimensions (H x W x T) | 2 13/32 in (Height) x 2 1/8 in (Width) x 1 5/16 in (Thickness) |
| Cor | Negro |
| Tipo de chave | Different (Unique Key) |
| Resistente á intemperie | Si |
| Rekeyable | Si |
| UPC | 071649074257 |
Información da garantía
Master Lock products are manufactured to demanding standards and are warranted to be free from defects in workmanship and materials for the life of the product. This warranty does not cover product abuse, modification, or improper installation. If you experience any issues, please refer to the support section or visit the official Master Lock websitio web para obter información detallada sobre os termos e condicións da garantía.
Apoio
Para obter máis axuda, rexistro de produtos ou para view frequently asked questions, please visit the official Master Lock websitio:
You may also contact Master Lock customer service directly through their website for personalized support regarding your 6421LJWO Keyed Padlock.





