Trouble Shooting; Trouble Shooting Guide - Bernette Chicago 7 Instruction Manual

Trouble Shooting

Trouble shooting guide

Before calling for service, check the following items. If the problem can't be solved, contact the place of purchase or your
nearest authorized dealer.
Problem Cause
The machine is not threaded correctly.
•
The thread tension is too tight.
•
The thread is too thick for the needle.
•
The needle is not inserted correctly.
•
The thread is wound around the spool
•
pin.
The needle is damaged.
•
• The bobbin case is not inserted cor-
rectly.
The bobbin case is threaded incor-
•
rectly.
The needle is not inserted correctly.
•
The needle is damaged.
•
The wrong size needle has been used.
•
• The foot is not attached correctly.
The machine is not threaded correctly.
•
The presser foot pressure is not strong
•
enough.
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Correction
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502020.83.11_2013_06_bernette chicago 7_EN
Rethread the machine.
Reduce the thread tension. (Lower
number).
Select a larger needle.
Remove and reinsert the needle (flat
side towards the back).
Remove the spool and wind thread
onto spool.
Replace the needle.
Remove and reinsert the bobbin case
and pull on the thread. The thread
should run easily.
Check both bobbin and bobbin case.
Remove and reinsert needle (flat side
towards the back).
Insert a new needle.
Choose a needle to suit the thread.
Check and attach correctly.
Rethread the machine.
Adjust the presser foot pressure.
Reference
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16
19
15
12
15
11
11
15
15
19/20
127-132
12
17