Toyota ad157 thread take up arm

Question

I have a toyota flat bed single fase sewing machine which has a broken thread take up arm (thanks to 2 uninsured numb skull removel men!) I've tried several suppliers of machine parts but apparently Toyota no longer produce spare parts. I beleeive the part number is 2111102-021-D and the number on the front of the machine is AD157103 any help would be gratefully received. regards Julia