4.
Adjustment/•
Adjusting
Thread
Tension
Check a samp
le
seam to the tightness
of
thread. For
needle
loosen thread tension. upper (2), Figure 1.
Tighten it
if the needle thread loose and too high. To
adjus
t,
tum
thread ten
sion
nut.
4·2) Setting
Needle
and
AdjUSting
Needle
Bar Height
(J)
Insert a
new
needle
in
needle
bar (
172132)
as far
as
it will
go
3).
Secure the needle
in
position with screw
( 15/ 64S28001 )
on
needle stopper ( 172
14
I).
Look
out
for
the
of
needle. The shaved part
of
the
needle
must face toward the pulley
of
the machine.
(2) To adjust needle bar height. tum pulley until needle is in
the lo
west
position.
There
two mark lines on
the
Align upper mark line with the bottom
of
needle bar
bush.
upper
I),
as
shown
in
Figure
4.
Timing Shuttle
and
Needle
Tum
pulley toward you (counterclockwise as you face
it)
until
needle
is
in
the lowest position. (Be sure
that
the upper
mark line on the
is
aligned with the bottom
of
needle bar bush, upper). Turn pulley further until the lower
mark line
on
the needle (see Figure
4)
is aligned with the
bottom
of
needle bar bush, upper. At this moment, the shuttle
race
body
must be so adjusted the point
of
the shuttle is
on
the
left side of needle (Figure
After
adjustment,
the shuttle race holder with three screws ( l/4S40006).
screws must so tightened that the clearance between the
shaved part
of
need
le
and shuttle point
is
O.
l to 0.2mm
A,
Figure 5).
172151
-*~=f(1)1=1t
~L,41,,~l,.
-C
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I
"t:'7FT
(2)
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::,,7·J±(l)~Jlli*-
~-r-t--Y
r~
lf!L
-Cfi~1t
1
1-t
o
4-2
) itO)J&t-tttn~tfitfl(1)~~
(1)
i t
lJ:
Fig
.31:~TJm
~ji-·
( l 72132) ~:j!Jl~J}., 1t~t?
~,;tJ.,i"C"~~/v
"'fT~"'" -i-l -Cit
J.t)
(172
14
I)
'1)~
~
(
l.5/
64S2800l)
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ig
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im
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(1/
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r
~1t•o
Needle
Bar
BusHng
Upper
tt•
'1
·:;
)I
.1
..t.
I
~
15164$20001
172132
Needle
Bar
&t•
172141
Needle
Clafll) Stud
it.11::.;(
Shaved_part
.I
/j
lJ
ffl!
Flg.3
Align
.
a
--Ut;;::="'-
-fl~
it~
b
Mark
li
nes
El~-
172132
Need
le
Bar
jtff
Flg.4
4
Detail@
@!Ui
i/
[0
.
~2mm
1/4540006
Flg.1!!5
From the Library of Superior Sewing Machine & Supply LLC
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