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TROUBLE SHOOTING GUIDE
Check items below before calling for service.
Problem Cause
Corrective
action
Page
Needles break
1. Needles are bent, blunt or
points are damaged.
2. Needles not inserted
correctly.
3. You have forcibly pulled the
fabric
1. Replace with new needles.
2. Insert the needles correctly to
the needle clamp.
3. Guide fabric gently with both
hands.
18
18
Thread breaks
1. Threading is incorrect.
2. Thread tension is too tight.
3. Needles not inserted
correctly.
1. Thread the machine correctly.
2. Reset the thread tension.
3. Insert the needles correctly to
the needle clamp.
9
．
10
12
．
13
18
Skipped stitches
1. Needles are bent, blunt or
points are damaged.
2. Needles not inserted
correctly.
3. Threading is incorrect.
4. Wrong needles used.
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)
18
18
9
．
10
18
Stiches are
irregular
1. Thread tension is not
correct.
2. Thread is caught.
1. Correct the thread tension.
2. Check threading path of each
thread.
12
．
13
9
．
10
Seam puckering
1. Thread tension is too tight.
2. Threading is incorrect.
3. Thread is caught.
4. Differential feet not set.
1. Correct the thread tension.
2. Thread the machine correctly.
3. Check threading path of each
thread.
4. Set differential feed to “S”.
12
．
13
9
．
10
9
．
10
25
Fabric not
cutting neatly
1. Upper cutter is blunt or
wrongly positioned.
1. Replace or adjust the cutter.
19
Fabric edges
curl
1. Too much fabric is within the
stitch.
1. Re-adjust seam width.
17
