3:4
Maintenance and trouble-shooting
Trouble-shooting
The needle thread breaks.
The needle thread is not threaded properly. Page 1:9
The needle thread tension is too tight. Page 1:15
The needle is bent or blunt. Page 1:5
The needle is incorrectly inserted. Page 1:5
The needle thread and the bobbin thread are not set under the
presser foot when start sewing.
Page 2:2
The threads were not pulled to the rear after sewing. Page 2:3
The bobbin thread breaks
The bobbin thread is not threaded properly in the bobbin holder. Page 1:8
Lint has collected in the bobbin holder. Page 3:2
The bobbin is damaged and does not turn smoothly. Change the
bobbin
The needle breaks
The needle is incorrectly inserted. Page 1:5
The needle screw is loose. Page 1:5
The threads were not pulled to the rear after sewing. Page 2:3
The needle is incorrectly inserted, bent or blunt. Page 1:5
The machine skips stitches
The needle thread is not threaded properly. Page 1:9
A poor quality needle is used. Change the
needle; 1:5
The needle thread tension is too tight. Page 1:15
Seam puckering
The needle thread is not threaded properly. Page 1:9
The stitch length is too long for the fabric.
Page 1:12
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