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Adjustment Procedures Results of Improper Adjustment
Adjustment Procedures Results of Improper Adjustment
™ If the presser foot is not closely
fitted on the throat plate, the
material will not be fed straight
and the material will flop causing
thread breakage and stitch
skipping.
1) Loosen screws 1.
2) In the state that bobbin winder lever 4 is tilted in the direction
A, slightly press bobbin winder driving wheel 2 to rubber ring
3 of the bobbin winder unit.
3) Temporarily tighten screws 1 and in the state that bobbin
winder lever 4 is tilted in the direction A, turn bobbin winder
shaft 5 by hand, and check that the bobbin winder shaft does
not rotate.
If bobbin winder driving wheel 2 and rubber ring 3 shift with
each other, adjust again.
4) Securely tighten screws 1.
(Caution) The rubber ring is the article for consumption. If
the rubber ring is excessively worn out, replace it with a
new one.
Part No. : A321600100A
1) Put the pressser foot in the presser bar, and insert screw 1,
At this time, do not tighten screw 1.
2) Turn the handwheel until the feed dog descends under the top
surface of the throat plate.
3) Applying a pressure onto the presser foot, tighten screw 1
with the sole of the presser foot closely fitted on the top surface
of the throat plate.
™ When turning the bobbin winder
shaft by hand in the state that
the bobbin winder lever is tilted
in the direction A, if the bobbin
winder shaft rotates, the bobbin
thread is not completely wound
up.
™ If the bobbin winder driving
wheel and the rubber ring are
strongly pressed with each
other, the service life of the
rubber ring is shortened.
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