ELNA 3210 Instruction Manual page 26

Close zipper. Turn zipper face up (right seam allowance
forms a small fold at basting line) and smooth zipper
teeth away from seam. Attach foot with right side pin.
Reset machine to normal straight stitch settings. Starting
at the bottom, sew through the folded seam allowance
and zipper tape.
Stop just before the zipper foot reaches the slider on the
zipper tape. Lower the needle slightly into the fabric.
Raise the zipper foot and open the zipper. Lower the foot
and stitch the remainder of the seam.
Close the zipper and spread the fabric flat with the right
side facing up. Baste through the opened seam
allowance and zipper tape.
Move the zipper foot to the left side pin. Guide the edge
of foot along the zipper teeth and stitch through the
garment and zipper tape. Stop about 5 cm (2") from the
top of the zipper.
Slightly lower the needle into the fabric. Raise the foot,
remove the seam basting stitches and open the zipper.
Lower the foot and stitch the remainder of the seam,
making sure the fold is even. Remove remaining basting
stitches.
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