Thread and stitch problems – Brother PC 6500 User Manual
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Before calling for service, check the following items. If the problem persists, contact the store where the
sewing machine was purchased or your nearest service representative.
Thread and stitch problems
Symptom
1. Upper thread breaks
2. Bobbin thread breaks
3. Skipped stitches
4. Fabric puckers
5. Inability to thread needle
6. Inability to adjust thread tension
Probable cause
1. Upper threading is not correct.
2. Upper thread is tangled.
3. Spool of thread is not correctly set.
4. Correct needle is not used.
5. Shuttle is damaged.
1. Upper thread is tangled.
2. Bobbin is not threaded properly.
1. Needle is not correctly inserted.
2. Correct needle is not used.
3. The combination of fabric, thread and
needle is not correct.
4. Dust is clinging to bottom of needle
plate.
5. Upper threading is not correct.
1. Threading is not correct
2. Correct needle is not used.
3. Combination of fabric, thread and
needle is not correct.
4. Thread tension is set to AUTO.
1. Needle is not correctly inserted.
2. Needle threader lever cannot be
lowered.
1. Upper threading is not correct.
2. Bobbin is not threaded correctly.
3. Combination of fabric, thread and
needle is not correct.
4. Thread tension is set to AUTO.
Remedy
1. Re-thread upper thread.
2. Remove thread ends from race and
shuttle.
3. Set spool of thread correctly.
4. Install proper needle.
5. Contact service representative.
1. Remove thread ends from race and
inner shuttle and from around spool
pin.
2. Re-thread bobbin thread.
1. Insert needle correctly.
2. Install proper needle.
3. Check “FABRIC/THREAD/NEEDLE
COMBINATIONS” chart on page 19.
4. Remove dust by cleaning with a brush.
5. Re-thread upper thread.
1. Re-thread upper and bobbin threads
correctly.
2. Install proper needle.
3. Check “FABRIC/THREAD/NEEDLE
COMBINATIONS” chart on page 19.
4. Refer to “THREAD TENSION” on page
1. Insert needle correctly.
2. Turn balance wheel to raise needle to
its highest position.
1. Re-thread upper thread.
2. Re-thread bobbin thread.
3. Check “FABRIC/THREAD/NEEDLE
COMBINATIONS” chart on page 19.