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Adjustment Procedures
1) Longitudinal adjustment of the rear needle guide
1. Loosen the setscrew
or backward to adjust the height.
2. After adjustments, tighten the setscrew
(Caution) When the rear needle holder is adjusted, recheck the
presence of a clearance between the respective needles
(
,
, and
). If any clearance is perceived, readjust the related
conditions.
2) Height adjustment of rear needle guide
1. Loosen the setscrew
vertically to adjust the height.
2. After adjustments, tighten the setscrew
and move the rear needle guide
.
) and the respective loopers (
and move the rear needle guide base
.
Results of Improper Adjustment
o I f a c l e a r a n c e i s a c t u a l l y
forward
,
, and
o When the rear needle holder
– 23 –
developed between the needles
,
,
and the rear needle
holder
, this can be a cause of
n e e d l e b r e a k a g e o r s t i t c h
skipping.
presses the respective needles
( ,
, and
) too much, this can
be a cause of needle tip being
blunt.
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