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This can't be removed.
It can only be sawn down.
So you need to find someone who is professional.
to deal with this.
1.The first thing to do is to see what type of toilet (split and conjoined) you are supplemented: the conjoined is that the toilet and the cistern are not fixed by screws, and the split is that the toilet and the cistern are fixed by screws. >>>More
Go to the hardware accessories store and you can buy the drain valve you need.
3. Next, find the drain valve in the toilet tank and observe the composition and structure of the toilet drain valve, as shown in the figure below. >>>More
In this case, most of the newly renovated flush valves are available, and they do not need to be adjusted, and they will be fine after a long time.
Materials required: Slotted cone.
1. Remove the drainage components first, and then you can remove them by turning them. >>>More