In order to change over the inlet pipe to the cisten I need to seperate the cisten from the base, so that I can get at the plastic nut which is trapped between the cisten and base unit on the bottom of the inlet pipe.
The cisten has two wall mounting screws which I can take out and then two screws which go through the bottom of the cisten into the base unit. In between the cisten and the base unit there appears to be a nut, which without loosening the cisten you cannot get a spanner on to loosen it!!!!!
If you turn the screws from the top they just turn and so does the nut.
Any advice would be greatly appreciated.