How to replace the saw blade of the stone cutting machine?

1. First, we put aside the saw blade that needs to be replaced, and then prepare a wrench for removing the saw blade of the stone cutting machine.
2. Then, we saw that there are four holes on the cutting machine, these four holes are used to fix the saw blade, we use a wrench to loosen these four holes.
3. After loosening the four holes on the cutting machine with a wrench, press and hold a small button in the middle of the four holes. The button is a little small, so you have to check it yourself.
4. After finding the small button, press and hold the button and do not let go. Only by pressing it can the cutting blade be taken out. If we do not press it, we cannot take out the saw blade.
5. Next, we hold down that button and carefully take out the saw blade.
6. Next, take out a new saw blade, press and hold that button in the same way, hold it down, take out a new saw blade, align it with the four holes just now and replace it.
7. After putting it on, we tighten the four holes, and finally fix it with a wrench.