21
To adjust the upper thread tension release (1)
The clearance of upper thread tension disks should be 0.8 mm when the presser foot is
raised.
Approximately
0.8 mm
1. Remove the top cover, face plate, thread guide cover
and arm thread guide.
2. Remove the front cover.
3. Loosen the setscrew.
4. Adjust the clearance by turning the eccentric pin.
5. Tighten the setscrew.
Setscrew
Setscrew
Eccentric pin
Thread tension disk
Thread
tension
release pin
Eccentric pin
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