Zoje ZJ2628-1 User Manual
ZJ2628-1
CYLINDER
BED
SEWING
COMPOUND
OPERATING
FEED
MACHINE
LOCKSTITCH
INSTRUCTIONS
I
I.
MAIN SPECIFICATION
2000s
.p.
Sewing speed
Stitch length
Needle
Presser foot
bar
stroke
lift
0 - 5mm
33 .
7mm {Manual)
14mm (Knee)
m.
2m.m
Needle
Lubrication
Reverse feeding mechanism
DP
X 17 18"
Automatic
Have
-2t
1
12. INSTALL THE MOTOR (
Align
Wheel
or
rightward.
Motor
Groove (A) by moving the Motor(C) leftward
Pulley Groove
(B)
Fig.l)
and
Balance
fj=
~-
·
r
~-A
~
u
W:
X
13. CONNECT THE CLUTCHLEVER WITH THE PEDAL ( Fig.2 )
1.
The optimum tilt angle
15
approximately
2. Adjust Clutch Cover (
(C)
and
Draw
3. The balance wheel should rotate counter-
clockwise
Wheel (G). The direction
can
be
reversed
the power plug
4. Adjust
Motor Vertical Position Screw (E).
of
the
V-belt is a slack
depressed at the center
degree.
Bar (B) run the line.
when
viewed from the outside
of
by
reversing (turning over 180 degree)
of
the motor.
the
tension
of
of
10-20mm
of
the belt by finger.
of
Pedal (A) is
D)
so
that Clutch
of
the
motor pulley rotation
V-belt (F)
The
by
proper tension
when
the belt is
Lever
Balance
turning
.JL.-
6 .. 1
_l
l
qj
"
l 1
I
14. PREPARATION AND LUBRICATION (
1) Cleaning the machine
Before leaving the factory, the machine parts
coated with rust-preventive grease, which may
hardened
shipment.
test before leaving the factory,
be
with jolt.
after cleaning
see
uneven resistance
adjustment must
operation.
be
and
contaminated
This
grease must
2) Examination
Although
loose
if
3)
0)
Line (A)
Line (B)
If
distributed
each
machine is confirmed strictly and
or
deformed after long distance transportation
A thorough examination must
the
machine.
there is running obstruction, parts collision,
or
be
Oiling
Required amount
on
the oil reservoir:
on
the oil reservoir:
oil level goes
to
each
by
dust during storage
be
removed with gasoline.
the
Tum
the
abnormal noise.
made
accordingly before
of
oil
Max
Min
down
under
Line
part
of
machine parts
be
balance
If
these exist,
. oil level
. oil level
(B)
, oil cannot
the
machine, thus
performed
wheel
run
are
be
and
may
causing the parts a seizure.
high
before starting
After
reservoir and securely tighten
reservoir with fresh oil
to
in
Fig.3)
(2) Replenishing
Always use
speed
(3) Replacing oil
To replace oil,
completely draining
only No.
sewing. Be
operation.
l8
sure
to
remove
--~-
special machine oil
replenish oil
Screw (
off
oil
Screw
to
Line (A)
C)
to drain oil.
, clean the
(C),
then
fill the
_,.-
©--
..
for
oil
. , 5. REPLACE NEEDLE ( Fig.4)
Turn the balance wheel to
of
upper end
(B) while keeping the long groove
leftward, fully insert the needle shank up to the
bottom
Clamp
its stroke. Loosen Needle Clamp Screw
of
the needle socket. Then tighten Needle
Screw (B).
lift
needle bar to the
of
the needle(C)
I 6.RUN IN OPERATION (Fig.S)
Run-in operation is required for a new sewing
or
machine,
a considerable length
1) Remove Rubber Plugs (A) on the top
arm and replenish sufficient amount
the red oil bole (D).
2) Lift Presser Foot (B).
3)
(1000-1500spm) to check oil distributing condition
through
4) Perform run-
30
minutes. After a lapse
during which the working speed is increased gradually
and the machine
2000spm can be adopted according to the nature
work.
a sewing machine left
of
time.
Run
the machine at a
Oil Check Wmdow (C).
in
operation
runs sufficiently well, the high speed
out
at
of
one month
of
operation for
of
of
oil, and also to
lo~
speed
1000-1500spm for
of
service
of
the
the
@,-
-
-.-
--
- -
11. THREADING ( Fig.6 )
To thread the needle thread, raise needle
of
upper end
perform threading as shown in Fig.6. To draw the
bobbin thread. hold the end
its stroke, lead the thread from spool and
of
the needle thread and
turn the balance wheel to lower the needle
bar
bar
to the
and
then to
thread and the bobbin thread is
of
presser foot.
lift
it to its highest position. Pull the needle
needle thread
and
bobbin thread frontward under
dr
awn up.
Put
the ends
2
I
s.
WINDING ADJU
1) The
tight,
Tension
bracket.
Note: nylon or polyester thread should be
with little tension, otherwise, Bobbin (D) might break
or
deform.
2) When
a cylindrical shape as shown
Screw (B)
Bracket (C) leftward
as shown in Fig. 7 (b), move
if
thread is
-bracket leftward.
After adequately positioning
Set
Screw (B).
3)
length
This
can
winder
wound
if
not, adjust the winding tension
Stud
of
wound
Do
of
thread will
be adjusted by adjusting Screw (E)
stop latch.
bobbin thread should
Nut
the
wound thread la
bobbin winder tension bracket and slide
as shown
not overfill the bobbin.
(A)
of
or
rightward.
fill
about
STM
ENT < Fig.7 )
be
neat
by
turning
bobbin winder tension
wound
yer
does not present
in
Fig.7 (a), loosen
If
thread is
the
bracket rightward,
in
Fig.7 (c), move
the
bracket, tighten
The
80%
of
bobbin capacity.
wound
optimum
of
bobbin
and
Set
but
the
----
-®
19. SET STITCH LENGTH
1) Stitch length
2) The figures on face (
length
in mm.
3) Reverse feeding starts when Reverse
Lever (C) is depressed, and
forward again
can
be
set
if
Reverse Feed Lever
by
turning Dial (A).
B)
of
the
machine will feed
(C)
AND
dial
show
is released.
REVERSE FEEDING ( Fig.8 )
stitch
Feed
-----
I-
l_
3
Ito.
ADJUST THREAD TENSION (Fig.9,
Generally,
according
conditions.
Fig.9 shows different stitch forms.
form should
abnormal stitches
break-age, the tension
thread must
In
case
bobbin thread tension is
(b
),
turn
the needle thread tension,
regulating
thread tension (See Fig. 10,11)
In
case
bobbin thread tension is too strong, as shown in Fig.9
(c
),
tum
needle thread tension,
regulating
bobbin thread tension.
the
thread tension
to
the sewing materials and
be
as
shown
cause
of
needle thread
be
adjusted accordingly.
needle thread tension
too
the
thumb
screw
the thumb
screw
nut
counterclockwise
or
of
bobbin case to increase the
needle thread tension is too weak
nut
clockwise
or
loosen the tension spring
of
bobbin case
is
to
Normal
in Fig.9 (a).
puckering and thread
is
too strong
weak,
as
shown
tighten the tension spring
to
to
decrease the
be
adjusted
sewing
When
and
bobbin
in
to
decrease
bobbin
increase
stitch
to,tt)
~
a
b
c
or
Fig.9
or
the
I
tt.
ADJUST THREAD TAKE-UP SPRING (Fig.t2)
!.Adjustment
Loosen the stopper
regulating
the thread take-up spring,
(C)
rightwards
adjustment, tighten the
2.Adjustment
Loosen the nut
regulating screw (F) clockwise to decrease the tension
of
the thread take-up spring,
screw (F) counterclockwise to increase the tension.
Then tighten the
of
the thr
ead
take-up spring stroke
screw
ring
(C)
leftwards to decrease
to
increase the stroke. After the
screw (B).
of
the thread take-up spring tension
or
(B) and
move
the regulating
(D) and screw
or
turn
nut (D)
and
the
screw
move
the
(E) and
the
(E)
.
the
stroke
of
ring
turn
the
regulating
4
j
12
.TIME NEEDLE MOTION TO HOOK MOTION (Fig.
1.
Adjusting the height
When the needle bar is at its highest point,
normally the measurement between the surface
needle plate and the upper end
20mm.
2. Time needle motion to hook motion
Before
then
needle bar reaches its lowest point. Continue turning
and allow the needle
its upward stroke. With needle bar in this position, the
hook point (A) should be at the center
needle(B), and normally the measurement between
hook point and the upper
should be
hook point and the needle hoUow should
0.05 to O.lmm
adjustment, set stitch length to minimum,
turn the balance wheel toward you until the
2-2.4mm, further the clearance between the
.
of
the needle
bar
to raise about
end
bar
(Fig. 13)
of
the needle
2mm
while
of
the needle eye (C)
be
of
eye
of
about
the
is
on
2.4mrn
the
the
13
,14)
0.05-
O.lmm
113. REPLACE ROTATING
1) Lift needle
stroke and remove needle and bobbin case
2)
Loosen
needle plate (A)
3)
Loosen Screw (B)
then loosen screw
take down rotating hook.
Note: The clearance between convex surface
positioner (E) and the side face
should be
adjust the clearance by moving needle plate bracket
(C).
at
screw
(D) and
0.5-0.
bar
to the highest position
of
needle plate (A), take down the
of
needle plate bracket (C) ,
lift
needle plate bracket (C),
7mm
,
if
not, loosen screw (B) and
HOOK
of
of
the rotating hook
of
hook
(Fig.15)
its
l t4.ADJUST PRESSER FOOT (Fig.16,1
1.
Lift adjustment
The
normal height
8mm, yet
actual requirement. Loosen the pressure regulating
screw(
presser foot, loosen
bar
presser foot.
will result
presser
adjustment must
procedure 3 stated below for proper way.
2. Pressure adjustme
Turn pressure regulating screw (
increase the pressure
counterclockwise to decrease
3. Adjus
presser foot (A) and the walking foot (B) (Fig.
Th
vibrate alternately with
in operation,
requirements. To incre
walking
presser
bar
(A)
screw (E)
needle plate and then tighten the
decrease vibrating
increase vibrating height
balance wheel until
separate
depress
then tighten the screw
4. Movement height adjustment
walking foot (Fig17)
The thickness
the height
foot. The
the material. To adjust, loosen the
crank
movement,
nut (H).
Time walking foot (B) to needle (Figl6
5.
This is the normal timing
wheel toward y
the walking
than the needle eye comes
raises, the walking foot (B) should leave the feeder
after the needle
reason that
goods while the needle is passing
avoiding irregular stitches. To adjust this, loosen
two
cam
tighten the screws (G).
it
C)
and
upwards
NOTE: The
foot
tment
e presser foot (
foot
foot (A),
lifter and turn balance wheel until
is
slightly separate from the needle plate, loosen
from
the
lift
rod
screws (G)
(F) faster
of
presser foot
of
the
can
be
adjusted,
lift
the
presser
the
screw (D)
and
downwards to
changeable
in
the
alternate movement
(A)
and
the walking
be
made
nt
of
the press
of
of
the alternate vibrating height
A)
equal
but
it
can
be
as
(B) and decrease vibrating height
adjust
as
and
depress
the
walking
of
the
should
upwards
and
downwards
ou
foot (B) should
eye
the
walking
and
or
the pres
heighl
of
the
walking
needle plate, loosen screw (E)
foot
(B)
(E
).
of
the material
lift
of
the
be
just
to
increase
, after lowering
has
left the feeder. This is
foot (B)
adjust
slower
(Fig.l6)
presser foot (A) should
if
necessary, according
bar
lifter to raise the
and
change
lift
of
to
the
presser
it
if
y
and tlie walking
height
adjusted according
e vibrating
follows:
ser
of
the walking
the
presser
to
reach needle plate and
sewn
presser
enough
to
decrease it, then tighten
when
the
reach
to, and
must
the
rotating position
as
may
the
the presser
height
foot (B), therefore,
it
accordingly.
er
foot (A)(Fi.g.l6)
C)
foot (A),
ou
desire.
when
height
Down
the
foot (A) to
screw (E). To
foot
foot (B) is slightly
of
presser
should control
foot
for
net
(H)
the
up
)
turn
presser
the
feeder earlier
when
tightly hold
the
be
be
to
move
presser
lift
of
the
foot
(A)
of
the
See
clockwise to
and
of
the
l6)
foot
(B)
machine is
to
actual
of
the
of
the
the
presser
presser
foot
and
clearance
the balance
the
desired,
(B)
(A):
foot
walking
move
and
bar
needle
due
goods
of
foot
reach
and
Turn
and
and
of
the
down
lifter,
the
the
for
the
the
and
7)
6
I15.ADJUST FEED
!.Adjustment
Generally, the position
When minimizing the stitch
needle hole
center
follow:(Fig.l8)
l )
2) Loosen the
Shaft Crank (Right) and move the
Crank.(Fig.l9)
3 ) Turn Feed Rock Shaft( C) and align the
center
center
4) After the adjustment, be sure to tighten the
screw
5) The standard height
of
top
surface.(Fig.20)
2.
Relative position adjustment between needle and
the needle hole
Make sure that needle
center
1 ) Remove the arm side cover and loosen the
screw (A).
2) Holding the needle bar and move it to
center
screw (A) and replace the arm side cover
of
the position
on
the Feed Dog (A) should align the
of
the Needle Plate (B).
Minimize stitch length
of
the Needle Hole
of
the Needle Plate (B).
(D),(E).
feed dog is 1.2mm above needle plate
in the feed dog. (Fig.21)
of
the needle hole,
of
the needle hole
DOG
of
of
Screw (D)
of
can
if
not, adjust
in
(Fig.18,19,20,21,22)
feed dog (Fig.l8,19)
the feed dog should be:
length, the center
If
necessary, adjust as
of
the Feed
two
on
the feed dog and the
feed dog (A) is that the
be
descended to the
it
as follows:
the feed dog, the tighten
Screw
of
the
Rock
(E)of
the
3. Time feed motion to needle motion (Fig.22)
of
The standard timing
motion is that the feed dog starts moving forward
when the needlepoint reaches the needle plate surface.
If
feed motion is not timed to needle motion, adjust
as follows:
1) Remove the arm side cover
(A), (D)
turn balance wheel slowly until the reference hole(C)
on the feed and feed lifting eccentric aligns with mark
(F).
feed lifting eccentric (B) and feed link lever
should be 0.3-0.Smm.
(A), (D).
of
the feed and feed lifting eccentric.
2) Holding feed and feed lifting eccentric (B) and
When adjusting, the clearance between feed and
After the adjustment, be sure to tighten the screw
feed motion to needle
and
loosen the screw
(E)
7
l
t6.
REGULAR CLEANING (Fig.23,24)
1.
Cleaning feed dog
Remove
lint between the feed
2.Cleaning rotating hook
Swing out
Wipe the bobbin case with soft
the
throat plate
the
machine head
and
teeth slots.
and
cloth
clear
and
.
off
clean
the dust
the
hook.
and
8
PARTS LIST
9
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