Trouble Shooting Guide - Siruba HSO-747D Instruction

TROUBLE SHOOTING GUIDE

Check items below before calling for service.
Problem
Needles break
Thread breaks
Skipped stitches
Stiches are
irregular
Seam puckering
Fabric not
cutting neatly
Fabric edges
curl
Cause
1. Needles are bent, blunt or
points are damaged.
2. Needles not inserted
correctly.
3. You have forcibly pulled the
fabric
1. Threading is incorrect.
2. Thread tension is too tight.
3. Needles not inserted
correctly.
1. Needles are bent, blunt or
points are damaged.
2. Needles not inserted
correctly.
3. Threading is incorrect.
4. Wrong needles used.
1. Thread tension is not
correct.
2. Thread is caught.
1. Thread tension is too tight.
2. Threading is incorrect.
3. Thread is caught.
4. Differential feet not set.
1. Upper cutter is blunt or
wrongly positioned.
1. Too much fabric is within the
stitch.
Corrective action
1. Replace with new needles.
2. Insert the needles correctly to
the needle clamp.
3. Guide fabric gently with both
hands.
1. Thread the machine correctly.
2. Reset the thread tension.
3. Insert the needles correctly to
the needle clamp.
1. Replace with new needles.
2. Insert the needles correctly to
the needle clamp.
3. Thread the machine correctly.
4. Use correct needles. (HA×1 or
130/ 705H)
1. Correct the thread tension.
2. Check threading path of each
thread.
1. Correct the thread tension.
2. Thread the machine correctly.
3. Check threading path of each
thread.
4. Set differential feed to "S".
1. Replace or adjust the cutter.
1. Re-adjust seam width.
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