Howto adjust the thread length remaining in the needle after thread trimming:
o In order to prevent the needle thread from slipping
off
and produce neat stitch on the bottom
. face of the materialat the start of
sewing,
a proper lengthof needlethread must beleft in the
needle eye after thread trimming.
o The thread length is adjusted by the thread tension No. 1.
o It is possible to provide the thread trimmer with different timing of action to trim a synthetic
thread from that of cotton thread. Consult withour distributorsor agentsin your area for this
modification.
Increased
Adjusting
screw
Reduced
10.
Attaching
the
needle
Bobbin
thread
tension:
Bobbin
thread
tension can be adjusted by
tightening or loosening
the
tension screw
of
the
bobbin
case.
Turn
the
screw
clockwise
for
increasing and counterclockwise for reducing
the
bobbin
thread
tension.
Use
a proper size of
DB,\1
or DAxl needle according to the
material as listed below;
thickness and
type
of
thread
and
Needle
Thread
Material
Cotlon
Synthetic
DB
X 1
#9
#80
#80
Fine
Georgette, nylon,
tetron
broadcloth
11
80-60
80-60
Light-weight
Broadcloth, light-weight knits
14
60-50
60-50
General
cloth
Cotton
gabardine,
drill
16
0
1
o
50-30
Medium-weight Coatings
18
30-20
30-20
Heavy-weight
Denim
21
30-
8
Extra-heavy
Cantton,
canvas
22.23
8
Extra-heavy
Cantton,
canvas
DA
xl
8-9
80
80
Fine
Georgette, nylon,
tetron
broadcloth
11
60
60
Light-weight
Broadcloth,
fine
knits
14
50
50
General
cloth
Cotton
gabardine, drill
-
17
-
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