Sears 385.12912 - Manual (Page 76)

Troubleshooting
Condition C^uso Reference
^
The needle thread
breaks. 1 The needle thread is not threaded properly
2 The needle thread tension is too 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 the presser fool when sewing is starting.
6 The fabric is not drawn to the rear when sewing is finished
7 The thread is too heavy or too fine for the needle
Page 24
Pages 26,28
Page 10
Page 10
Page 24
P
atia
Page 14
The bobbin thread
breaks. 1 The bobbin thread is not threaded properly in the bobbin
case and shuttie,
2, Lint has collected in the shuttle area.
3 The bobbin is damaged and doesn't turn smoothly.
Page 22
Page 64
Change the bobbin
The needle breaks.
1
The needle is incorrectly inserted
2 The needle is bent or blunt
3 The needle clamp screw is loose
4 The needle thread tension is too tight,
5, The fabric is not drawn to the rear when sewing is finished.
6 The needle is loo fine for the fabric being sewn
Page 10
Page 10
Page 10
Pages 26, 28
Page 32
Page 14
Skipped stitches 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.
Page 10
Page 10
Page 14
Page 14
Page 24
Change the needle
Seam puckering 1. The needie 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 bng for the fabric
Pages 26. 28
Page 24
Page 14
Make stitch denser
The cloth is not
feeding smoothly.
1 The machine is not plugged in
2, The stitches are too fine,
3 The feed dog is not raised after “drop feed" sewing.
Page 6
Make stitch coarser
Page 38
The machine
doesn't work. 1, The feed dog is packed with lint.
2 A thread is caught in the shuttle race
3. Push-clutch is disengaged
Page 62
Page 64
Pages 18, 20
Patterns are
distorted. 1 The stitch is not balanced Page 30
Noisy operation
1
1, There is thread caught in the hook race.
2,, Lint has built up in the shuttie or the shuttie race.
Page 64
Page 64
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