The 132K series operates on heavy jute and hemp threads and also on cloth, canvas and leather.
Yes, the arm and bed are to be assembled as a unit so that accurate gear alignment is done.
Maximum length of stitch for the 132K series machines is 4 inches.
Plenty of replacement parts are available such as plates, screws, and other components for the other models as well.
Yes, the 132K series machines do have oil tubes, which have to be oiled with felt packing in order to give the machine its best performance.