25
Remove the fabric from under the foot. Draw the upper thread through the backside
of the fabric and knot upper and lower threads. Cut the center of the buttonhole with
the seam ripper, being careful not to cut the stitches on either side.
Tips:
1.
Slightly reduce the upper thread tension to produce better results.
2.
Use backing material for fine and stretchy fabrics.
NEEDLE SIZE
FABRICS
THREAD
9-11(65-75)
Lightweight fabrics-thin cottons,
voile,serge, silk, muslin, Qiana,
interlocks, cotton knits, tricots,
jerseys, crepes, wovenplyester,
shirt& blouse fabrics.
Light-duty thread in cotto, nylon or
polyester.
12(80) Medium
weight
fabrics-cotton,
satin, kettlecloth, sailcloth, double
knits, lightweight woollens.
Most threads old are medium size
and suitable for these fabrics and
needle sizes. Use polyester
threads on synthetic materials and
cotton or natural woven fabrics for
best results. Always use the same
thread on top and bottom.
14(90) Medium
weight
fabrics-cotton
duck, woolen, heavier knits,
terrycloth, denims.
16(100)
Heavyweight fabrics-canvas,
woolens, outdoor tent and quilted
fabrics, denims, upholstery
material (light to medium)
18(110)
Heavy woollens, overcoat fabrics,
upholstery fabrics, some leathers
and vinyls
Heavy duty thread, carpet thread.
(use heavy foot pressure-large
numbers).
26
Trouble shooting
Problem Cause Correction
Upper thread breaks
1. The machine is not
threaded correctly.
2. The thread tension is too
tight
3. The thread is too thick for
the needle.
4. The needle is not inserted
correctly.
5. The thread is round wound
the spool pin.
6. The needle is damaged.
1.Rethread the machine.
2. Reduce the thread tension
(lower number).
3. Select a larger needle.
4. Remove and reinsert the
needle (flat side towards the
back).
5. Remove the bobbin and
rewind the bobbin.
6.Replace the needle.
Lower thread breaks.
1. The lower thread is not
inserted correctly.
2. The upper thread tension is
too loose.
1.Check the threading
carefully.
2.adjust the upper thread
tension.
Skipped stitches
1. The needlenis not inserted
correctly.
2. The needle is damaged.
3. The wrong size needle has
been used.
4. The foot is not attached
correctly.
1.Remove and reinsert needle
(flat side towards the back).
2. Insert a new needle.
3.Choose a needle to suit the
the thread and fabric.
4.Check and attach correctly.
Needle breaks
Loose stitches
1.The needle is damaged.
2.The needle is not inserted
correctly.
3.Wrong needle size for the
fabric.
4.The wrong foot is attached.
1. The machine is not
threated correctly.
2. The bobbin case is not
correctly threated.
3. Needle/fabric/thread
combination is wrong.
4. Thread tension wrong.
1. Insert a new needle.
2.Insert the needle correctly
(flat side towards the back).
3. Choose a needle to suit the
thread and fabric.
4. Check and attach correctly.
1.Check the threading.
2. Thread the bobbin case as
illustraded.
3. The needle size must suit
the fabric and thread.
4. Correct the thread tension.
Seams puckering
1.The needle is too large for
fabric.
2. The stitch length is wrongly
adjusted.
3. The thread tension is too
tight.
1.Select a finer needle.
2.Readjust the stitch length.
3.Loosen the thread tension.
Содержание SM-6001
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