I doubt there's anyone on here with a Fuzion as this is a Redwood forum!
But if they're like most recliners they most likely have a lever on either side of the back that releases the back to raise off then each piece easily fit through any doorway. Or lay them in their side & angle them out.
If neither of those methods work try the Crossroads or Keystone forums for other Fuzion owners.
Danny & Linda
Former '13 FB owner