Then there is the question of identifying the part. I can take a photo of it and describe it but don't know the part number. http://www.orderpartstoday.com/model/TBAM782/_/_/Toshiba/M782/ lists "70051147 GEAR, CAM [B440]" and "70051150 GEAR, LEVER DRIVE [K550]" either of which could be the part. When these machines were in vogue, Toshiba must have had part identification drawings. Do any such drawings remain available?
Yes, an intact used machine might be cheaper. Thanks for the tips.