33
104 73 15-26
23. 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 10 - 14 g when pulling the
thread slowly, using normal polyester thread.
Adjustment
1. Turn screw (a) until the correct thread tension is obtained. Please use a 12-14 g lead weight or a
tension gauge as a setting gauge.
NOTE! Before any adjustment is made remove any loose pieces of thread or fl uff from the thread tension
discs.
Settings
1
2
a
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