1. Product Overview
The Sportneer Bicycle Combination Chain Lock provides high-security protection for your bicycle and other valuables. It features a 5-digit resettable combination mechanism, eliminating the need for keys. The robust design includes a manganese steel chain and a durable nylon cover for enhanced protection and longevity.
This lock is versatile and suitable for securing bicycles, motorcycles, scooters, electric bikes, children's bikes, fences, gates, ladders, barbecues, lawnmowers, sports equipment, and other items requiring security.

Image: Overview of the Sportneer Bicycle Combination Chain Lock, highlighting its alloy steel lock buckle, polyester cloth cover, zinc alloy lock core, and 5-digit password mechanism.
2. Setting Your Combination
Your Sportneer combination chain lock comes with a preset combination of 00000. Follow these steps to set your personalized 5-digit combination:
- Align the original password "00000" with the protruding mark on the lock mechanism.
- Rotate the lock core 90 degrees in the direction indicated by the arrow.
- Set your new desired 5-digit password by turning the number wheels. Choose a memorable combination.
- Turn the lock core back 90 degrees to its original position. Your new password is now set. It is recommended to take a photo or write down your new combination for future reference.

Image: A visual guide demonstrating the four steps to reset the 5-digit combination on the Sportneer bicycle lock, from aligning the default code to setting a new one.
3. Operating the Lock
3.1. Locking
- Ensure your chosen combination is set correctly.
- Pass the chain lock through the frame of your bicycle and around a secure, immovable object (e.g., a bike rack, lamppost).
- Insert the locking pin into the lock body.
- Scramble the number wheels to secure the lock.
3.2. Unlocking
- Align your personal 5-digit combination with the protruding mark on the lock mechanism.
- Pull the locking pin out of the lock body to open the lock.

Image: A collage showing the Sportneer chain lock in use, securing a bicycle to a rack, a stroller, and a scooter, demonstrating its versatility.

Image: A diagram illustrating the lock head diameter (3.3cm) and advising that for scooters or electric vehicles with a wheel gap less than 3.3cm, the lock may need to be wrapped around the vehicle body instead of through the wheel.
4. Maintenance
To ensure the longevity and smooth operation of your Sportneer combination chain lock, consider the following maintenance tips:
- Cleaning: Wipe the lock and chain with a damp cloth to remove dirt and grime. Avoid harsh chemicals that may damage the protective coating or nylon cover.
- Lubrication: Periodically apply a small amount of lubricant (e.g., silicone spray) to the internal locking mechanism and number wheels to ensure smooth operation, especially in dusty or wet environments.
- Storage: When not in use, store the lock in a dry place to prevent rust and corrosion. The durable nylon cover helps protect the chain from water and rust.
- Inspection: Regularly inspect the chain and lock body for any signs of wear, damage, or corrosion. If significant damage is observed, consider replacing the lock for optimal security.
5. Troubleshooting
- Lock is stiff or difficult to open/close:
- Ensure the combination is perfectly aligned with the mark.
- Apply a lubricant to the number wheels and locking mechanism.
- Check for any debris or foreign objects obstructing the mechanism.
- Forgot the combination:
- Unfortunately, if you have forgotten your combination and did not record it, there is no master key or reset button to recover it. The lock is designed for high security, meaning only the correct combination will open it.
- Lock appears damaged:
- If the chain, lock body, or combination wheels are visibly damaged, the security of the lock may be compromised. It is recommended to replace the lock.
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | 19 |
| Lock Type | 5-Digit Resettable Combination Chain Lock |
| Chain Material | 6mm thick Manganese Steel or similar alloy |
| Cover Material | Durable Nylon Fabric |
| Dimensions (L x W x H) | 15 x 12 x 7 cm (approximate packaged dimensions) |
| Weight | 640 Grams |
| Combinations | 100,000 possible combinations |
| Special Feature | Password Unlock, Anti-cutting, Anti-scratch cover |

Image: A close-up view of the lock's chain, showing a caliper measuring its 6mm (0.236 inch) thickness, highlighting its robust construction.
7. Warranty and Support
Specific warranty information for this product is not provided in the available data. For warranty claims, technical support, or further assistance, please refer to the contact information provided with your product packaging or visit the official Sportneer website.
8. Official Product Videos
No official product videos from the seller were found in the provided data for this model. Please refer to the instructions and images above for guidance.



