Its harder than I thought-the seal was attached by 2 spring clamps wich were hard enough to remove but today I just finished doing the pump. It stank to high heavan,full of gunge and objects a nail(no lucky pound lol)and other stuff.
Firstly there is no good news but the bad is is that the inlet holes are jammed with gunge? and the pump lastnight dripped and now I own lake flood in my shed!