28
104 72 79-26
20.Lower thread tension (thread tension of the bobbin case)
Check
1. Insert a full bobbin into the bobbin case.
2. The thread tension spring of the bobbin case shall give a resistance of 12 - 20 g when pulling the thread
slowly, using normal polyester thread.
Adjustment
1. Turn screw (A) until the correct thread tension is obtained.
Use Needle plate # 412 78 96-01 as a setting gauge.
NOTE!
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discs.
Settings
A