~8~
131
Timing
of
Loopers Running Clear
of
Needles
0
,.,
-----
The
loopers run in
back
of the needles in
their
forward travel and in front of the needles in their
backward
trave
l.
Adjust the
clearance
between the needles
and
the
loopers to anywhere from 0 to
0.05
mm
in
both the forward and
backward
.ravel
s.
(Adjusting
method)
1.
Remove forward feed
arm
cover e.
tum
th
e pulley
toward
yourself until the longitudinal feed eccentric ring set screw shows
thr
ough adjusting hole e.
2.
Loosen the
se
t screw to such
an
extent
that
it does not stick out of
th
e longitudinal feed eccentric ring, turn the pulley toward
yourself
again
and loosen the
other
set
screw
.
3. With scr
ewdriver
kept on the
set
screw, turn the pulley
to
adjust the cl
earance
between the needl
es
and the loopers.
4.
After the adjustment. r
et
i
ghte
n
the
two
set
screws securely a
nd
put
the
forward feed
arm
cover back on.
~
Needle Guard Adjustment (Standard specification)
-----
·
•
The
needle gu
ard
prevents
the
needles from contacting the loopers
in
their forward travel. Position the needle guard as close
to
the
needles
as
possible but
make
sure
that
it
is
clear
of the needles.
(Adjuatlng
method)
1.
Turn
the
pulley
toward
yo
ur
se
lf until
the
needles
co
me down
to
the lowest position.
2. Loosen lower
set
screw
e
at
the end
of
the forward feed
arm
.
3. Adjust the
clearance
between needles e and needle
guard
e to anywhere
fr
om 0.2
to
0.3 mm by moving needle guard 8 .
4.
After
the
adjustment, retighten
set
screw
e securely.
From the library of: Superior Sewing Machine & Supply LLC
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