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(4)
When the
small
looper is in its left
most
position, the position of the
slot
bottom in the small looper
must come out
1 to
2mm
from the
side
face of
the
hook needle as
illustrated
in
Fig.
I1
.
If this projection
is
excessive. the
chain-off
thread
wi
ll
be difficult to come out
To
adjust
the
posiuon of the small looper.
loosen
the setscrew
in the
small
illustrated in
Fig.12
Fig.
11
(5)
The trimming of the small
looper is almost same
as
the
timing
of
the large looper. Adjust the timing while confirming the
c;tate
that the threads is
properly threaded
through
the hook needle.
To
adjust
the timing of
the
small
looper, use the right large
rod. To
advance
the timing, loosen the two
setscrews
in the right
large
rod
"1th a hexagon wrench (2.Smm) as
iJlustrated in
Fig.13,
and
move
the
hexagon wrench
up. To
retard
the
timing
move the hexagon
wrench
down.
Tighten
up the
set-screws
making
sure
that the
setscrev.
s are
closely fit to
the
collar
on the right-hand
side.
4)
Adjustment of
needle guide
looper block as
Fie.
12
F
i
e
13
Install the
needle guide
to the upper and lower
side,
making
sure
that the needle
guide will
not
come
into
contact
with
the
lower
surface of the
large
looper
(Fig.14,
"E'?.
To adjust
this
position, position
the
needle guide
b~
loos\!ning
the se1screw in the needle guide as
illustrated
in
Fig.14.
F
1
g
14
Fie.
16
Fig.
t6
5)
Adj
ustment
of
thread
tension
spring
\\hen threading the
large looper
(Fig.15)
,
reduce
the
working volume of the
thread
tension spring,
ifthe
loop
of the parent need le
thread
is
il)sufficient. Or increase the working
volume,
if
the
loop is excessive.
Excessive
or
insufficient loop size
may
cause jumping of stitches. To adjust the working volume of
the thread tension
spring
(/it:.16).
loosen
the
small screw
in the upper
thread adjuster and
tum the upper thread
adjuster
(upper
thread
adjusting shaft)
all
the
way so as to
adjust
the distance between the
thread adjuster.
confirm the close
fit
of
the
i..:n:.ioner shoe
by
moving the presser foot down. If this tensioner shoe
is
raised,
the
thread
may not
be tightened
- 6 -
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