Moving knife
Needle
a
Shorter Longer
Length of remaining thread
after trimming
Fig.
22
Lower
part
of
throat
plate
i.5bb
Graded
part
of
bed
(Note):
DLN-415-2
Set
the
feed adjusting dial to
"0".
Fixed
knife
0.6mm
Fig.
23
The fixed knife can be installed by moving it to the right of the standard installation position.
In that case, the length of the remaining thread of needle thread and the bobbin thread not
only gets longer by the distance the fixed knife has
moved,
but
because
the timing of the
trimming also is delayed which makes the length of the thread at the tip of the needle eye
much
longer
(Fig.25)
In the case of synthetic thread, move the fixed knife to right to delay the timing of the thread
trimming. However, to make the adjustment complete, it is also necessary to adjust the timing
of
the
thread
trimmer.
(Chapt.
IV-1).
4.
The
floating
range
of
the
second
thread
tension
disc
1)
How
to
verify
the
floating
range
At
the
position
where
the
take-up
has
come
just
before
the
upper
dead
point,
lower
the
presser
foot and when the hook thread presser (Fig. 16 (D) is pushed hard to right, verify
that
the floating
range
of
the
second
thread
tension
disc is
0.5~lmm.
2)
Adjusting
the
floating
range
of
the
second
thread
tension
disc
(Fig.26)
(DTo increase the floating range, loosen nut
(B)
and tighten nut
©.
©To
decrease the floating range, loosen nut
(g)
and tighten nut
©.
After
the
adjustment
is
completed,
tighten
both
®
and
(B>
nuts.
Bring
to
center
Moving knife
Fixed
knife
l(M
Fig.
24
Sewing
Wlien
fixed
knife
is
moved
to
right
Standard
Moving knife
Bobbin
thread
presser
Fig.
25
-
19
-
®
(D
® d) ©
Fig.
26
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