On a Newlong Industrial DS-9C to make a 1 thread back into a 2 thread the following parts need to be replaced.

Parts to be Replaced:

  • Looper: Replace part number 303191 or 033281 with part number 033121.
  • Needle Thread Controller: Replace part number 305251 with part number 035042.
  • Presser Foot: Replace part number 102162 (Presser Foot, Right (CM)) with the appropriate 2-thread presser foot.

Throat Plate Modifications:

  • Remove part number 114131 from the throat plate 304171.
  • Remove part number 3/32S56004 screw from the throat plate 304171.

Note on Throat Plate :

  • If the throat plate 304171 is worn out, it can be replaced by throat plate 104123. This is the standard throat plate and may be a more cost-effective option.

Additional Information:

  • Refer to chapter number 5 of the machine manual for additional settings and adjustments that must be made after the parts have been replaced. This is crucial for ensuring the machine operates correctly and produces the desired stitch.

These steps outline the necessary hardware changes for the conversion. It is important to follow the manual for the final adjustments to ensure proper function.