-19-
9-7 .
...t~sl~Btr.JiJ!Jij
I Upper thread
arm
thread
guide
adjustment
i}iji'J 1:s51
~a-tt1t
1:s~•s•~jesima.t,
1J°
~ilf5K::1J
.
1.
f~:ff
~tr,
z.J§iJWYi-ft
1#
J::
~15
I
~a
JL~
JJ(
1JZ
.
2. i)iji'J~m,
rr•~n
.
Adjust the upper thread arm thread guide
so
that the
upper thread
ha
s a slight tension when
the
loopers
run out
of
upper thread loops.
1.
Loosen the screw O , and then adjust
so
that the
upper thread arm thread guide
@i
s nearly horizo-
ntal.
2. After the adjustment, retighten the screw
O.
9-8.
f'i}~ff-1¥.Jifaji,
I Thread release
shaft
adjustment
ijij~~Sff-ft
-~ffi
M
J::
~a.t
,
M5K:h~;
ffiM
rltfa.t, SiJ~h:k.
I. f~Jffflij{tJ.
2.
~~f
~S
ff iAl~-ftli
~
ffilt$
lt
tt:tfi 1J.iffil5~4mm
a.tS:tf
~t~~
.
3. iffil~
mrr
•~f'.
f'.
.
Adjust the thread release shaft so that the thread ten-
sion discs loosen when the presser foot is raised and
tighten when the presser foot is lowered.
1.
Loosen set screw O.
2. Make an adjustment by turning thread release shaft
8 so that the thread tension discs begin
to
loosen
when the presser foot
ri
ses
4mm
above the top
of
the needle plate.
3.
After the adjustment, retighten set screwO
securely.
9-9.
Ji~fl~~ff{Ji}!Ji, I
Lower
thread
take-up
timing
adjustment
iffil~R-~•s•*~~E8~a.t,
EM•s•
.!§Mf&
tt
,
:tf:ltfl£S•Ma~~7mm
.
1.
~~f'.f'.,1£-=fMA
E
~I•sa~~ft(Jif.3~1
Lf~:tf
2-i'~tr
0
2.
Jl
·Mi~S•sa:a~
lt
;tt
ftUfl5~7mm
.
3.
if.3~Etr•2-i'ffl~tr
.
Make an adjustment so that, when the loopers begin
moving backward, l
ower
thread take-up @ contacts
thread @, and is 7
mm
up from lower thread take-up
base@).
1.
Insert screwdriver through the adjusting hole in
the lower thread take-up base, and loosen two set
scre
wsC,
.
2. Rai
se
lower thread take-up O until it is 7 mm up from thread take-up base 8 .
3.
After the adjustment, retighten
two
set
screws
C,
securely.
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
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