AEG 30Z Instruction Manual page 58

Instruction manual for Model AEG 30Z /AEG 35Z
Trouble shooting guide
Problem
7. The upper thread tension is too
Needle
tight.
breaks
1. The machine is not correctly
threaded.
2. The bobbin case is not threaded
Loose
correctly.
stitches
3. Needle/ fabric/ thread
combination is wrong.
4. The thread tension is wrong.
1. The needle is too thick for the
fabric.
Seam gather
or pucker 2. The stitch length is wrong.
3. The thread tension is too tight.
1. The needle thread tension is too
tight.
2. The needle thread is not
threaded correctly.
Seam
3. The needle is too heavy for the
puckering
fabric being sewn.
4. The stitch length is too long for
the fabric.
5. If you are sewing on thin fabric.
1. The correct presser foot is not
used.
Patterns are
distorted
2. The needle thread tension is too
tight.
1. Thread is caught in the hook.
The
2. The feed dogs are packed with
machine
lint.
jams
1. Fluff or oil have collected on the
hook or needle bar.
2. The needle is damaged.
The
3. Slight humming sound coming
machine is
from internal motor.
noisy
4. Thread is caught in the hook.
5. The feed dogs are packed with
lint.
Cause
56
Correction
7. Loosen the upper thread
tension.
1. Check the threading.
2. Thread the bobbin case as
illustrated.
3. The needle size must suit the
fabric and thread.
4. Correct the thread tension.
1. Select a finer needle.
2. Readjust the stitch length.
3. Loosen the thread tension.
1. Loosen the thread tension.
2. Rethread the machine.
3. Choose a needle to suit the
thread and fabric.
4. Make the stitch length shorter.
5. Sew with a stabiliser material
under the fabric.
1. Select the correct foot.
2. Loosen the thread tension.
Remove the upper thread and
bobbin case, turn the handwheel
backwards and forwards and
remove the thread remnants.
1. Clean the hook and feed dog.
2. Replace the needle.
3. Normal.
Remove the upper thread and
bobbin case, turn the handwheel
backwards and forwards and
remove the thread remands.
Reference
24
15
13
21
24
21
30
24
24
15
21
30
29
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24
53
53
20
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53