−33 −
Adjustment Procedures Results of Improper Adjustment
Place an appropriate round wood of 12 mm in height between
the presser and the throat plate, loosen the setscrew in the
presser bar position bracket, press down the presser bar position
bracket and the slide roller installing base while fully depressing
the presser lifting pedal. Then, tighten the setscrew in the presser
bar position bracket.
<Check after the adjustment>
After the adjustment, make sure that the presser functions
completely.
Loosen nut 1 to adjust the solenoid.
™ If the presser lifting amount is
excessively increased, the presser
starts going up before the bobbin
thread is trimmed.
™ If the slide roller installing base is
bent when installing, it will come in
contact with the projection of the
needle thread trimmer arm or the
projection comes off.
Refer to “(19) Longitudinal amount
of the needle thread trimmer”.
™ If the position of the solenoid is
excessively protruded or drawn
back, thread tension value is
affected.
™ If the angle (45˚) of the thread
tension shaft is not proper, the
proper thread tension cannot be
obtained.
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