Trouble Shooting - Bernette Chicago 7 Instruction Manual

Problem Cause
The needle is damaged.
•
• The needle is not correctly inserted.
• Wrong needle size for the fabric.
• The wrong foot is attached.
The needle clamp screw is loose.
•
The presser foot which is attached is
•
not appropriate for the selected type of
stitch pattern.
The upper thread tension is too tight.
•
• The machine is not correctly threaded.
The bobbin case is not correctly
•
threaded.
Needle/fabric/thread combination is
•
wrong.
Thread tension is wrong.
•
The needle is too thick for the fabric.
•
• The stitch length is adjusted incor-
rectly.
• The thread tension is too tight.
Correction
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502020.83.11_2013_06_bernette chicago 7_EN

Trouble Shooting

Insert a new needle.
Insert the needle correctly (flat side
towards the back).
Choose a needle to suit the thread
and fabric.
Select the correct foot.
Use the screwdriver to tighten the
screw firmly.
Attach the presser foot that is appro-
priate for the selected type of stitch.
Loosen the upper thread tension.
Check the threading.
Thread the bobbin case as illustrated.
The needle size must suit the fabric
and thread.
Correct the thread tension.
Select a finer needle.
Readjust the stitch length.
Loosen the thread tension.
Reference
15
15
19/20
21
15
21
16
12
11
19/20
16
19/20
30
16
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