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101
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4. MAINTENANCE
4-1. Cleaning the inside of the hook cover
Periodically clean the inside of the hook cover
to
remove dust and thread waste.
4-2. Cleaning the thread clamp
When thread is caught at top end
of the thread clamp, thread clamp becomes incomplete and sewing
trouble at the sewing start will be caused. If sewing problems such as stitch skipping occur at the beginning
of sewing, the below-stated cleaning should be carried out.
In the case of clean-
ing the inside of
the hook with the
throat plate base re-
moved, take care not
to stress right and
left cylinder sensor
cords
and
.
2) Open the hook cover. Blow cloth dust and thread
waste off of the thread clamp by blowing air
through the clearance between the throat plate
base and the hook with an air gun or the like.
Cloth dust is likely to gather in the circled section
in the gure. Carefully blow cloth dust off of that
section, in particular.
1) Press work PRESSER and WINDER key
to display "work clamp lowering screen".
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