Introduction
This manual provides essential information for the proper use and care of your EasyKeys Replacement Key for Yale Lock MS33. This key is specifically designed for Yale Lock Key Series MS01 - MS1050, compatible with Yale Lock manufacturers (GCODE 997X) and cut on a Y6 key blank.
Please read these instructions carefully before using your new key to ensure correct application and longevity.
Key Identification and Verification
Before using your replacement key, it is crucial to verify that the key code and manufacturer match your existing lock. This replacement key is for Yale Lock MS33 series.

Figure 1: Example of a replacement key with the code MS33. Ensure the code on your key matches your lock's requirement.
To ensure compatibility, locate the code on your existing key or lock. The code is typically stamped directly on the key, on the lock face, on a label inside or behind the lock, or on a cabinet/door label.

Figure 2: Common locations for identifying your lock code. Always verify the manufacturer and code for proper key selection.
- Order by Manufacturer: Lock codes are specific to the manufacturer. A code from one brand may not work with another, even if it appears similar.
- Key Cut Differences: Even if codes look similar, the actual key cuts vary significantly by brand.
Operating Instructions
- Insert Key: Gently insert the replacement key into the lock's keyway. Do not force the key.
- Turn Key: Once fully inserted, turn the key clockwise or counter-clockwise, depending on the lock mechanism, to engage or disengage the lock.
- Remove Key: After the lock is operated, return the key to its original insertion position (usually vertical) before gently pulling it out.
If the key does not turn smoothly, do not apply excessive force. Ensure the key is fully inserted and that it is the correct key for the lock.
Maintenance
- Cleaning: Keep the key clean and free from dirt or debris. A soft, dry cloth can be used for cleaning.
- Lubrication: If the lock mechanism becomes stiff, a small amount of graphite-based lubricant can be applied to the lock's keyway, not directly to the key.
- Storage: Store the key in a dry place to prevent corrosion. Avoid exposing it to harsh chemicals or extreme temperatures.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Key does not insert fully. | Obstruction in keyway, incorrect key. | Check for debris in the keyway. Verify the key code matches the lock. |
| Key turns but lock does not operate. | Worn key, internal lock mechanism issue. | Inspect the key for wear. If the key is new, the lock mechanism may require service. |
| Key is stiff or difficult to turn. | Lack of lubrication, minor misalignment. | Apply graphite lubricant to the lock's keyway. Ensure the key is fully inserted and aligned. |
Specifications
| Brand | EasyKeys |
| Model Name | MS33 |
| Manufacturer | Yale Lock |
| Compatible Series | Yale Lock Key Series MS01 - MS1050 |
| Material | Brass |
| Lock Type | Cam |
| Special Features | Custom Cut Key, Durable |
| Dimensions (L x W x H) | 0.5 x 0.5 x 1 inches |
| Item Weight | 4 ounces |
| Included Components | Key (1) |
Support
For further assistance or inquiries regarding your EasyKeys Replacement Key for Yale Lock MS33, please contact EasyKeys customer support through their official channels. Refer to your purchase documentation for specific contact details.
You can also visit the EasyKeys Store on Amazon for more product information and support resources.


