Filter
Top Products
Troubleshooting
f ................
Condition
The needle thread
breaks.
The bobbin thread
breaks.
The needle breaks.
Skipped stitches
Seam puckering
The cloth is not
feeding smoothly.
The machine
doesn't work.
Patterns are dis-
torted.
Noisy operation
Cause
1. The needle thread is not threaded properly
2_ The needle thread tension istoo tight
3. The needle is bent or blunt,.
4_ The needle is incorrectly inserted.
5. The needle thread and the bobbin thread are not set
properly under (drawn to the rear of) the presser foot
when sewing is starting
6. The fabric is not drawn to the rear when sewing is
finished_
The thread is too heavy or too fine for the needle,
The bobbin thread is not threaded properly in the
bobbin holder.,
2 Lint has collected in the bobbin holder,
& The bobbin is damaged and doesn't turn smoothly
1,, The needte is incorrectly inserted
2, The needle is bent or blunt_
3,, The needle clamp screw is looser
4, The needie thread tension is too tight,
5, The fabric is not drawn to the rear when sewing is
finished.
6, The needle is too fine for the fabric being sewn,,
I, The needle is incorrectly inserted,,
2, The needle is bent or blunt
3., The needle and!or threads are not suitable for the work
being sewn.
4 A blue needle is not being used for sewing stretch, very
fine fabrics and synthetics.
5., The needle thread is not threaded properly.,
64 The presser foot pressure is not strong enough,
7,_The wrong needle is used.,
I,, The needle thread tension is too tight,
2., The needle thread is not threaded properly,
3, The needle is too heavy for the fabric being sewn.
4. The stitch length is too long for the fabric
5o The presser foot pressure is not correctly adjusted.
7_
1o
2.
3.
4.
Reference
Page 26
Pages 28, 30
Page I 0
Page 10
Page 26
Page 38
Page 16
Page 24
Page 94, 96
Change the bobbin
Page 10
Page t 0
Page 10
Pages 28, 30
Page 38
Page 16
Page 10
Page I 0
Page 16
Page 16
Page 26
Page 8
Change the needle
Pages 28, 30
Page 26
Page 16
Make stitch denser
Page 8
.....I ......................
The feed dog is packed with linto Page 96
The presser foot pressure is too weak, Page 8
The stitches are too fine., Make stitch coaser
The feed dog was not raised after "drop feed" was used Page 46
Page 6
Page 94,96
Page 22
Page 36
Page 94,96
Page 94,96
1. The machine is not plugged ino
2. A thread is caught in the hook race.
3, Push-pull clutch is disengaged.,
1. The stitch is not balanced
!. There is thread caught in the hook race.,
2. Lint has built up in the bobbin holder or hook race,
98