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(B)
(A)
Adjusting Tension Release Mechanism
When the presser foot lifter is raised, the tension release mechanism should work correctly.
If not, adjust as follows.
Adjusting tension release claw
1 Remove the top cover unit.
2. Lower the presser foot and turn the thread
tension dial until the convex part of tension
dial is set at the tension release claw .
In this condition, loosen screw (A) and
adjust the tension release adjusting plate
to touch the tension discs supporter .
The tension discs should be opened slightly.
3. Tighten screw (A).
To Adjust the thread releasing plate
4. Lower the presser foot, turn the thread
tension dial until the flat surface position
touches the releasing claw .
5. Loosen screw (B).
6. Set the thread releasing lever so it touches
the thread release plate slightly and
tighten screw (B).
7. When the presser foot is raised, the tension
discs should be opened.
Note: The clearance between the tension disc
supporter and the thread releasing plate
should be 0.5 to 1.0 mm when the
presser foot is lowered.
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Presser Foot
Sensor Switch
Thread Releasing
Plate
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