Baby Lock BL9 (BL9) Instruction and Reference Guide - Manual (Page 50)

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Clean the bobbin case.
Replace bobbin.
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Make the stitch
length shorter.
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Make the stitch
lenfth longer.
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Reference
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 fabric is not being drawn to the back when sewing is finished.
6. The thread is either too heavy or too fine for the needle.
1. The bobbin thread is not threaded properly in the bobbin case.
2. Lint has collected in the bobbin case.
3. The bobbin is damaged and doesn't turn smoothly.
1. The needle is incorrectly inserted.
2. The needle is bent or blunt.
3. The needle clamp screw is loose.
4. The tension of the needle thread is too tight.
5. The fabric is not drawn to the back when sewing is finished.
6. The needle is too fine for the fabric being sewn.
7. The pattern selector dial had been turned while the needle was
in the material.
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. The needle thread is not threaded properly.
1. The needle thread tension is too tight.
2. The machine is not threaded correctly.
3. The needle is too heavy for the fabric being sewn.
4. The stitches are too long for the fabric being sewn.
* When sewing extremely light weight materials, place a sheet
of paper underneath the fabric.
1. The needle thread tension is too loose.
2. The needle is either too heavy or too fine for the thread.
1. The feed dog is packed with lint.
2. The stitches are too short.
1. The machine is not plugged in.
2. Thread is caught in the hook race.
3. Handwheel has been disengaged for bobbin winding.
1. Threads have been caught in hook mechanism.
2. The feed dog is packed with lint.
Troubleshooting
Condition
The needle thread
breaks.
The bobbin thread
breaks.
The needle breaks.
Skipped stitches
Seam puckering
Stitches form loops
below the work
The cloth is not
feeding smoothly.
The machine does
not work.
The machine does
not run smoothly
and is noisy.
Cause