How much does it cost to change the lock core?

It's cheap to buy lock cores online, so you don't need to change them yourself manually. If you want to hire a professional lock opener to replace it, the service fee ranges from 50 yuan to 200 yuan, even more expensive than the lock core.

How to replace the lock cylinder:

Required materials: a new lock core and a screwdriver.

1. Unscrew the two screws that secure the handle.

2. Unscrew the screw that fixes the lock cylinder.

3. Take down one handle, and then take out the linkage rod in the handle (at this time, write down the positions of the two protrusions on the linkage rod, to the left or right, so as to avoid mistakes during installation).

4. Take out the handle on the other side and the old lock cylinder.

5. As shown in the figure below, adjust the black part in the middle of the new lock core, install the handle, and insert the lock core into the lock.

6. Insert the connecting rod into the handle (pay attention to the position of the protrusion at this time), and then press the handle.

7. Fix the handle and lock cylinder. When fixing the lock core, you only need to turn the key while fixing it to prevent the lock core from being fixed too firmly and the key from turning.

8. The completed drawings are as follows.