Yep, everything is disassembled. The other 750VS that I have looked at did not have a spring at the hollow plastic float. Here's an online pic (not mine)
Maybe it's not necessary with the plastic or nitrophyl floats? The first carb I dissected had brass floats. The hinge pin is captive once it's inserted into the bowl, so it's not like it's going anywhere, i.e. the spring shouldn't be required to secure the crosspin in place.