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There is a gong wire with the figure of "ten" under the red lid, unscrew it a little. Grab that tube and turn from left to right. The red lid opens in the opposite direction.
The white balloon has a gong wire on its arm, unscrew it a little. The balloon was raised. This is up and down the water level.
Don't be too high. Beware of water leaks. Let's use my first method first.
I am a professional repairer for bathroom toilets.
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Limit the fall of the "float" (control the float with a flexible wire or nylon rope, etc.), as long as the float does not touch the reset of the "cap", and this is OK.
Try it with hand cream, my mother just did it when the clothes were dyed, not dry cleaning, and then with water, I don't know if the furniture will work.
The lid is plastic, if it is scalded to the point that it is stained, it is generally difficult to wash off, you can try to use a toilet bowl cleaner, this thing is very corrosive, otherwise there is no other way.
You can go to the market and buy a replacement of the same size, which is not expensive, dozens of dollars.
Definitely not, even if it is a different model of a brand, the appearance may be different. If it's broken, you can only take a bad one to match, and if you're lucky, other models or brands may also be matched.
If you can flush down, there is no problem, if you can't flush down, then it is best to find a professional pipe dredging company for dredging.