All the complicated and tricky bits in the Kugelfischer fuel injection system are contained in the main pump, which is below the plenum chamber shown in one of the photos. If this unit is still full of oil and not mucked about with, it's probably not too difficult to get it back into good order. And a Flavia with Kugelfisher injection working as it should, is a delight to experience. as I remember from the not too distant past - see photo.
Colin
Colin,
Obviously not taken in the UK
Brian
8227