Why would anyone even want to service the freewheel or hub, as I remember things, "333s" were 5spd cog sets usually installed on steel-hubs?
Not that it matters, but there's some chance someone in a hurry to remove that freewheel, even using the correct tool - will end up stripping/damaging the freewheel body or tool or both. This freewheel removal design wasn't exactly the height of Shimano's technical acumen.