It's Lentar rather than Lantar...
Threading will be very similar to this...
https://www.youtube.com/watch?v=N9HcCIusrdY
http://www.ebay.com/itm/Lentar-810-D-815-Dual-8-Movie-Projector-Motor-BELT-NEW-/181110107381?pt=US_Movie_Slide_Projectors&hash=item2a2b00ecf5
http://www.ebay.com/itm/lentar-8mm-dual-projector-Model-810-D-/171054751423?pt=US_Movie_Slide_Projectors&hash=item27d3a85ebf
Peccavi, June 2013