This is a bizarre instruction manual. Inexplicably it says to remove all manner of extremely delicate components that are not in the way and seem to have nothing to do with replacing the battery. It could be, as others have said, to protect delicate parts from the adhesive remover. I didn’t need that either and managed to remove the battery by simply prying it out gently. Perhaps the adhesive on others was tougher than mine. Anyway, I’d be hesitant to follow this if I were you.