Hmm... I thought the unit was actually welded to the 1800 floor from what I can remember. And how can a person replace the handle if the unit can't be removed/taken apart without cutting it?It's been a few years, but I think the whole mechanism comes out as a unit. I don't remember ever separating the handle from the rest of it. It's just barely possible to sneak the whole thing out if you get the angle just right.