Hi there guys,
for memory , i think i used to just loosen the rubber boots either side, then you could rotate the base of carbi toward you, then I think there was just enough room there to get to the base to either remove the base of carbi and also can remove jets ,etc for cleaning.
So maybe dont need to remove the whole thing.
I actually cut down a 17mm ring spanner to about 50mm long, used that to remove drain plug in base of carbi without touching anything else.
Cheers,