This was a pretty simple toy to build -- mostly. The spigot wouldn't stay in place, but that's not surprising. The illustrator apparently thought the large block had a series of holes in the middle, instead of the slots it actually has. As I prepared the shot, the spigot dowel, held in place by two fiberboard collars, slowly slide down the slot.
Also, it's not clear from the illustration exactly how the long dowel is supposed to attach to the pump arm. I tried stripping the wire and inserting it into the center fo the dowel, but that didn't work (the wire was too thin and kept bending). In the end, I just used tape to secure the hook to the dowel.