Is the EFKA DC1600 Motor still available as a spare part?

No, the production of the DC1600 sewing motor is discontinued. It is not available as a spare part anymore.
However, old DC1600 motors can still be repaired. To do this, it is necessary to send it to Dürkopp Adler in Germany or an authorized service partner through your local distribution partner.

If even a repair is not possible anymore, the old DC1600 motor can often be replaced by the new DC1550 motor with an exchange kit. This kit should be assembled to your machine only by your local Dürkopp Adler distribution partner because there are lots of different exchange kits for various machine classes.