If you decide to buy the cheapest toilet and install in the toilet, then you first have to dismantle the old toilet. In advance, prepare all the necessary tools, namely a lot of rags, a crowbar, keys of different sizes and pliers.
First treat the toilet with an antiseptic. Before this process, pour more water into the system, then disinfect. Be sure to put on the protective equipment, since microdlocks are possible during dismantling, there is a risk of infection here. Early eyes and gloves are enough.
Free the flush barrel from the water. And proceed to dismantle. If your toilet of the production of Soviet times, then it is attached to a wooden basis, which is in the floor. In this case, the screws need to be broken.
If the toilet is acquired in our time, then most likely the mount was carried out in the floor itself. Plastic dowels are inserted and fastened with screws. Such a mount can be twisted. In the case of a bite of fastening, you will also have to break the screws, as in the first case. Do this work as accurately as possible, in order to avoid breakdown of the facing material.
The work ends with cleaning the formed fragments and covering the neck for a new toilet.