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BA_KA-ED_A22_190313_en.doc
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Problems during sewing and possible solutions
C A U T I O N ! Danger of injury!
Switch the machine’s electric power off and pull the power plug.
Otherwise danger of finger bruises and needle through stitches.
Thread tears
Possible reasons:
-
sharp edges or grooves in the needle guide, thread take-up, looper or
needle eye after a long time of machine operation
-
looper or loop stroke are not set correctly, therefore the thread loop is not
always caught
-
thread tension set too high
-
thread size does not correspond to needle size (thread is too thick)
Solutions:
-
replace or polish the damaged parts
-
re-adjust looper and/or loop stroke
-
re-adjust thread tension, check thread course
-
choose the correct thread size
PLEASE OBSERVE:
Thread course, thread, needle plate with plunger and cloth
retainer, needle and thread tension should always be set
and chosen according to the material to be sewn.
Inexact needle penetration
Possible reasons:
-
worn out or damaged needle or wrong needle system
-
wrong pressure or setting of cloth retainer
-
wrong setting of needle plate or needle guide
-
damaged or worn out needle glide plate
-
wrong needle size (too thin)
-
damaged plunger or wrong plunger setting
Solutions:
-
replace damaged needle, choose suitable needle size, correct needle
system
-
check settings and re-set, if necessary
-
replace needle glide plate
-
exchange or adjust plunger
Summary of Contents for KA-ED
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