Seiko TH-2B, TH-6B, TH-7B, TH-8B Instruction Manual
Operating
Instructiona
*
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* T H - 2 B
* *
* T H - 6 B *
* • *
* T H - 7 B *
* *
* T H - 8 B *
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• *
SEIKO
SEWING.
MACHINE
CO.
1
Lubrication
2
Setting
3
Thre
ad 2
4
Removal
Contents
the
and
needle
insertion
2.
2
of bobbin ' 3
5 Winding
6 Needle
7 Tension
the
threading
of
8 Pressure of
9 Adjustment of
10
Determination
forward
11
Timing
12 Removal
13
Adjusting
(A)
and backward amount 7
of
shuttle
Adjusting
of
feed
(B) Adjusting the
(C) Adjustment
(D)
Adjusting the forward and backward
needle
(E) Timing of
®
Positioning
®
Adjusting
® Adjusting the
® Adjusting the clearance
01
hook
®
Determination
rock
® Each
foot
bobbin
bobbin
presser
stitch
of
thread
on
the
needle
dog. (7B &
for
bar
frame
needle
the
frame
timing
(2B &
thread
thread
and
needle
thread
foot
length
positioning
tension
hook 9
each
points
position
8B
height
timing
and hook
between the
height
position
of
the
for
7B & 8B
for
up/down moving amount
8B
only)
for
stitch
releasing
mechanism
against
Types) 9
length
needle
at
..i.......
hole
of feed dog 10
of
feed
of
of the
position
dog-rise
upper
needle
between
position
side
bar
tip
needle
of
needle
of
of
needle
hook
and
bar
of
of
eye. 11
the
presser
10
10
11
11
tip
12
12
I3
4
5
5
7
7
8
g
Specification
for
Model
TH
Types
Max.
Needle:
Feed
Presser
Needle
Bed
Working
Use:
Sewing
mechanism:
lift:
bar
size:
space:
speed:
stroke:
800
Sewing
models
DDX1,
(8B)
(7B)
(6B)
(2B)
20mm
(s.p.m.)
speed
and
BY X 1
Alternating
Flat
presser;
Roller
Alternating
(10mm
56™"
253inmx656mm
180mm
Suitable
materials
sproting
X
400mm
for
such
goods
may
be
applications.
(forTH-2B)
pressers
or
flat
pressers
by
lever)
sewing
as
shoeSf
and
changed
presser
of
thick
extra
bagSt
fabrics*
,
by
heavy
the
leathert
1
Lubrication
Lubrication
all
points
indicated
by
arrows
in
figures.
- 1 -
Setting
Tii-rn
Sold
as
deeply
needle
the
needle
+hP
balance wheel over tov/ard you
ita
Ind
to
hisLst
insert
as
it
the
left
Mint.
the
Ledle(2)
will
and
go,
tighten
Loosen
keeping
into
the
the
the
the
long
set
until
the needle
needle
needle
groove
sorew(l)
clamp
bar
hoi®
of the
securely.
"bar
sorew(l).
"P
3
Thread
The
the
To
find
ration,
and
will
unwind.
needle
bobbin
forefinger
wind
thread
thread
out
thread
and turn the thread over toward
tighter
should be
can be
twist,
of
right
strands,
used
used
hold the
hand,
and
the
left—twisted
either
and
right-twisted
left
thread
then
left-twisted
or
right
as
you
shown
between the
thread
thread
twisted
by
illust
thread
will
only»
thumb
- 2 -
4
Removal
ORemoval
Open
the
figure)
caseu)
case
outward and
and
of
and
and
insertion
bobbin
bed
slide,
drop-do^
depress
of
bobbin
then observe the
the needle
the
take
the
snap
bobbin
bar
spring
out
hook
at
and
position (as
lowest
apring(l)
pull
up
of the bobbin
point,
and
the
case.
shown
then
bobbin
bobbin
•
b
- 3 -
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