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Troubleshooting
f
Condition
The needle thread
breaks.
The bobbin thread
breaks.
The needle breaks.
Skipped stitches
Seam puckering
The cloth is not
feeding smoothly.
Cause
1_The needle thread is not threaded properly.
2oThe needle thread tension is too tight°
3, The needle is bent or blunt.
4oThe needle is incorrectly inserted.
5_The needle thread and the bobbin thre_.d are not set properly
under the presser foot when sewing is starting.
6, The fabric is not drawn to the rear when sewing is finished o
7. The thread is too heavy or too fine for the needle.
1. The bobbin thread is not threaded properly in the bobbin
case and shuttle
2. Lint has collected in the shuttle area,
3. The bobbin is damaged and doesn't turn smoothly.
I. The needle is incorrectly inserted,
2. The needle is bent or blunL
3, The needle clamp screw is loose.
4, The needle thread tension is too tight°
5o The fabric is not drawn to the rear when sewing is finished,,
6. The needle is too fine for the fabric being sewn°
1. 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.
6._The wrong needle is used.
1, The needle thread tension is too tight.
2o The needte thread is not threaded properly.
3. The needEeis too heavy for the fabric being sewn°
4, The stitch length is too long for the fabric,
!. The machine is not plugged in_
2. The stitches are too fine.
3. The feed dog is not raised after "drop feed" sewing.
Reference
Page 24
Pages 26,28
Page lO
Page lO
Page 24
Page 32
Page14
Page 22
Page 68
Change the bobbin
Page 10
Page 10
Page 10
Pages 26,28
Page 32
Page 14
PagelO
PagelO
Page 14
Page14
Page 24
Changethe needle
Pages 26, 28
Page24
Page 14
Make stitch denser
Page 6
Make,itch coaxer
Page 38
The machine 1_ The feed dog is packed with linto Page 66
doesn't work. 2. A thread is caught in the shuttle race° Page 68
& Push-clutch is disengaged° Pages 18, 20
Patterns are 1, The stitch is not balanced., Page 30
distorted,
Noisy operation 1, There is thread caught in the hook race,, Page 68
2. Lint has built up in the shuttle or the shuttle race. Page 68
72
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