Summary: top when it is closed up. It would hit the top of a Lexmark cartrige, stopping the lid being closed. In the image below a box has been drawn around the spigot to make it easier to see. Adapting the machine to take Lexmark cartriges is simplicity itself. All you need to do is hold the cover firmly and grasp the spigot with a pair of pliers and gently twist it. It will easily
Image Dimensions: 403 x 512
Image originally found here.