JUKI PLC-2710NM User manual

PLC-2710NM, 2710NM-7,
2760NM, 2760NM-7
INSTRUCTION MANUAL

ii
CONTENTS
1. Specications ................................................................................................................. 1
2. Threading the machine head......................................................................................... 3
3. Take-up thread guide ..................................................................................................... 5
4. Setting the pneumatic center guide (PLC-2760NM,2760NM-7) .................................. 6
4-1. Selection of the optional input function .............................................................. 6
4-2. Selection of the optional output function............................................................ 7
4-3. Setting the ancillary device (PLC-2760NM) ......................................................... 8
4-4. Piping of the air (PLC-2760NM) ............................................................................ 9
5. Adjusting the hook needle guard................................................................................ 10
6. Adjusting the bobbin case opening lever .................................................................. 10
7. Adjusting the timing of the opener ............................................................................. 11
8. Position of the thread trimmer cam............................................................................ 13
9. Adjusting the position of the moving knife................................................................ 14
10. Adjusting the position of the clamp spring ............................................................. 15
11. How to adjust the cam timing.................................................................................... 16
11-1. Timing of the vertical feed cam......................................................................... 16
11-2. Top feed cam timing........................................................................................... 17
12. Needle sway (Adjusting the bottom feed amount).................................................. 18
13. How to replace the hook cover ................................................................................. 19
14. How to install the oil lter.......................................................................................... 21
15. How to replace the right hook with the left hook for the 1-needle sewing machine.................. 22
CAUTION
This Instruction Manual for the PLC-2710NM,2710NM-7,2760NM,2760NM-7 only describes
their di󰀨erences from the standard models (PLC-2710-7,2760,2760-7,2760L).
For safety-related information, carefully read and fully understand "Safety precautions"
described in the Instruction Manual for the standard models before using your sewing ma-
chine.

– 1 –
1. Specications
No. Item Application
1 Model PLC-2710NM PLC-2760NM
2 Model name 1-needle, post-bed, unison-feed,
lockstitch machine with vertical-axis
hook
2-needle, post-bed, unison-feed,
lockstitch machine with vertical-axis
hook
3 Application Medium- to heavy-weight materials, car seat, furniture
4 Sewing speed Max. 2,500 sti/min
(Refer to "6. SEWING SPEED TABLE" in the Instruction Manual for the standard
model.)
5 Needle GROTZ BECKERT 135 x 17
(Nm 100 to Nm 180) (Standard : Nm 140)
6 Applicable thread size for sewing # 30 to # 5 (Europe 60 / 3 to 20 / 3)
7 Applicable thread size to be cut
8 Stitch length Max. 12 mm (forward/reverse feed)
However, the machine is shipped with its stitch length restricted to 7 mm.
9 Stitch length dial 1-pitch dial
10 Presser foot lift Hand lifter : 10 mm
Knee lifter : 20 mm
11 Stitch length adjusting mechanism By dial
12 Reverse stitch adjusting method By lever
13 Thread take-up Link thread take-up
14 Needle bar stroke 40 mm
15 Amount of the alternate vertical
movement
1 mm to 9 mm (Alternate vertical dial adjustment type)
However, the machine is shipped with its stitch length restricted to 6.5 mm.
16 Hook Full-rotary vertical-axis 1.6-fold hook (Latch type)
17 Feed mechanism Box feed
18 Drive system/Top and bottom
feed actuation mechanism
V-belt driven type/Timing belt
19 Thread trimming method
20 Lubrication Automatic lubrication by semi-dry head plunger pump (with oil gauge)
21 Lubricating oil JUKI New Defrix Oil No. 1 (equivalent to ISO standard VG7)
or JUKI MACHINE OIL No. 7
22 Bed size 643 mm × 178 mm
23 Space under the arm 347 mm × 298 mm
24 Hand wheel size V-belt e󰀨ective diameter : ø76.0 mm
Outer diameter : ø140 mm
25 Motor/Control box M51N 750W / SC-922A
26 Machine head weight 76 kg 79 kg
27 Noise - Equivalent continuous emission
sound pressure level (LpA) at the
workstation:
A-weighted value of 84.0 dB;
(Includes KpA = 2.5 dB); according to
ISO 10821- C.6.2 - ISO 11204 GR2
at 2,500 sti/min.
-Sound power level (LWA);
A-weighted value of 86.0 dB;
(Includes KWA = 2.5 dB); according to
ISO 10821- C.6.2 - ISO 3744 GR2 at
2,500 sti/min.
-Equivalent continuous emission
sound pressure level (LpA) at the
workstation:
A-weighted value of 84.5 dB;
(Includes KpA = 2.5 dB); according to
ISO 10821- C.6.2 - ISO 11204 GR2
at 2,000 sti/min.
-Sound power level (LWA);
A-weighted value of 93.5 dB;
(Includes KWA = 2.5 dB); according to
ISO 10821- C.6.2 - ISO 3744 GR2 at
2,000 sti/min.

– 2 –
No. Item Application
1 Model PLC-2710NM-7 PLC-2760NM-7
2 Model name 1-needle, post-bed, unison-feed,
lockstitch machine with vertical-axis
hook, with thread trimmer
2-needle, post-bed, unison-feed,
lockstitch machine with vertical-axis
hook, with thread trimmer
3 Application Medium- to heavy-weight materials, car seat, furniture
4 Sewing speed Max. 2,500 sti/min
(Refer to "6. SEWING SPEED TABLE"
in the Instruction Manual for the standard model.) *1
5 Needle GROTZ BECKERT 135 x 17 (Nm 100 to Nm 180) (Standard : Nm 140)
6 Applicable thread size for sewing # 30 to # 5 (Europe 60 / 3 to 20 / 3)
7 Applicable thread size to be cut # 30 to # 5 (Europe 60 / 3 to 20 / 3)
8 Stitch length Max. 12 mm (forward/reverse feed)
However, the machine is shipped with its stitch length restricted to 7 mm.
9 Stitch length dial 2-pitch dial
10 Presser foot lift Hand lifter : 10 mm
Automatic presser foot lifter : 20 mm
11 Stitch length adjusting
mechanism
By dial
12 Reverse stitch adjusting method Air cylinder type (with touch-back switch)
13 Thread take-up Link thread take-up
14 Needle bar stroke 40 mm
15 Amount of the alternate vertical
movement
1 mm to 9 mm (Alternate vertical dial adjustment type)
However, the machine is shipped with its stitch length restricted to 6.5 mm.
16 Hook Full-rotary vertical-axis 1.6-fold hook (Latch type)
17 Feed mechanism Box feed
18 Top and bottom feed actuation
mechanism
Main shaft direct drive system/Timing belt
19 Thread trimming method Cam-driven scissors type
20 Lubrication Automatic lubrication by semi-dry head plunger pump (with oil gauge)
21 Lubricating oil JUKI New Defrix Oil No. 1 (equivalent to ISO standard VG7)
or JUKI MACHINE OIL No. 7
22 Bed size 643 mm × 178 mm
23 Space under the arm 347 mm × 298 mm
24 Hand wheel size Outer diameter : ø123 mm
25 Motor/Control box 550W AC servomotor / SC-922B
26 Machine head weight 81 kg 84 kg
27 Rated power consumption 193VA
28 Noise -Equivalent continuous emission
sound pressure level (LpA) at the
workstation:
A-weighted value of 79.5 dB;
(Includes KpA = 2.5 dB); according to
ISO 10821- C.6.2 - ISO 11204 GR2
at 2,500 sti/min.
-Equivalent continuous emission
sound pressure level (LpA) at the
workstation:
A-weighted value of 84.0 dB;
(Includes KpA = 2.5 dB); according to
ISO 10821- C.6.2 - ISO 11204 GR2
at 2,500 sti/min.
-Sound power level (LWA);
A-weighted value of 86.0 dB;
(Includes KWA = 2.5 dB); according to
ISO 10821- C.6.2 - ISO 3744 GR2 at
2,500 sti/min.
*1 The speed setting according to the amount of the alternating vertical movement of the walking foot
and presser foot is automatically carried out.

– 3 –
[PLC-2710NM, 2710NM-7]
Thread the machine head following the
order as illustrated in the gure.
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following
work after turning the power o󰀨 and ascertaining that the motor is at rest.
* Pass thread through the right
side of thread guide 󱢵.
2. Threading the machine head
󱢶
󱀇
󱀁
󱀃
󱢳
󱢴
󱢵
󱀅
󱀄
󰿿
󱀀
󱀂
󱀆
󱢷
󱀅
󱀂
󱀃
󱀄
󱀆
󱢵
󱢶
󱢷

– 4 –
[PLC-2760NM, 2760NM-7]
Thread the machine head following
the order as illustrated in the gure.
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following
work after turning the power o󰀨 and ascertaining that the motor is at rest.
󱢶
󰿿󰿿
󱢵
󱀇
󱀁
󱀃
󱀅
󱀀
󱢳
󱢴
󱢵󱀆
󱀂
󱢶
󱢴
󱀄
󱀄
󱀃
󱀂
󱀁
󱀄
󱀃
󱀂
󱀁
󱀅
Right-hand
needle thread
Left-hand
needle thread

– 5 –
3. Take-up thread guide
If you want to change the feed amount of thread fed
from the thread take-up lever, loosen the setscrew of
take-up thread guide 󱀀and move take-up thread guide
󱀀appropriately.
Move the take-up thread guide in direction Ato de-
crease the thread feed amount.
Move the take-up thread guide in direction Bto in-
crease the thread feed amount.
* Standard position of the take-up thread guide
The position where take-up thread guide 󱀀is at its
lower end while the setscrew is fitted in the upper
tapped hole (󱤪) in the thread guide mounting plate 󰿿
(See the gure on the left.)
If you want to move the take-up thread guide in direc-
tion Bfrom its standard position, insert the setscrew of
take-up thread guide 󱀀into the lower tapped hole (󱤫)
in thread guide mounting plate 󰿿.
󰿿


󱤫
󱤪
󱀀
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following
work after turning the power o󰀨 and ascertaining that the motor is at rest.

– 6 –
󱀄
󱀃󱀂󱀁
󰿿
󱀀 󱀅
󱠅󱠄
0i 6 on P
1 2 TPo_
2L 9
0i 6 UGCd
0i 6 2L 9
2H 9
0i 7 on P
nEd
_ni _
TPo_
in
TPo_
4. Setting the pneumatic center guide (PLC-2760NM,2760NM-7)
4-1. Selection of the optional input function
2. Press switch 󱀂to advance the setting number to select the function
No. 12. If you want to return the setting number, press switch 󱀁to
return it.
(Caution) When you advance (return) the setting number, the previous (or
next) content is conrmed. It is necessary, therefore, to be very
careful when you have changed the content (i.e., touched the
switch).
3. Select the item of "in" with keys 󱀃and 󱀄.
4. Select i06 with key 󱀂.
5. Select the "CGUd" center guide switch input function with keys 󱀃and 󱀄.
6. Determine the "CGUd" center guide switch input function with key 󱀂.
7. Set the ACTIVE of the signal with keys 󱀃and 󱀄.
Set the display to "L" if the operation is carried out when the signal is
"Low". Set the display to "H" if the operation is carried out when the sig-
nal is "High".
8. Determine the aforementioned function with key 󱀂.
9. Finish the optional input with key 󱀂.
10. Select the item of "End" with keys 󱀃and 󱀄to return to the function setting mode.
Lighting alternately
1. While holding down switch 󱀅, turn the power ON. (The display items that have been
changed in the previous operation will be displayed.)
* If the screen display does not change, start over the operation again from the beginning.

– 7 –
4-2. Selection of the optional output function
1 2 TPo_
3L 3
3H 3
nEd
TUo_
TPo_
on P
1o5
UGCd
1o5
3L 3
1o5
on P
1o6
TUo_
TPo_
*1 Item to be selected di󰀨ers with the model.
o13PLC-2760NM
o15PLC-2760NM-7
1. Select the function No. 12 with the operating procedure of the optional
input setting procedures 1 and 2.
2. Select the item of "oUT" with keys 󱀃and 󱀄.
3. Select o13/o15 with key 󱀂. *1
4. Select the "CGUd" center guide switch input function with keys 󱀃and 󱀄.
5. Determine the "CGUd" center guide switch input function with key 󱀂.
6. Set the ACTIVE of the signal with keys 󱀃and 󱀄.
Set the display to "L" if the operation is carried out when the signal is
"Low". Set the display to "H" if the operation is carried out when the sig-
nal is "High".
7. Determine the aforementioned function with key 󱀂.
8. Finish the optional output with key 󱀂.
9. Select the item of "End" with keys 󱀃and 󱀄to return to the function setting
mode.
Lighting alternately

– 8 –
󱀄
󱀃󱀂󱀁
󰿿
󱀀 󱀅
󱠅󱠄
4-3. Setting the ancillary device (PLC-2760NM)
41 1 nUF _
nE_ d
nUF _
1TU _
2TU _
＊＊＊ ＊
1U 0
＊＊＊ ＊
＊＊
U＊
0GC 1
0
0
0
G
G
G
C
C
C
2
3
4
1. While holding down switch 󱀅, turn the power ON.
If you keep the switch held pressed for three seconds or more, the buzzer will sound to allow you to set the
functions that are available under the Service mode.
2. Select the function No.141 with keys 󱀁and 󱀂.
3. Select the items of "_End", "UT1_", and "UT2_" with keys 󱀃and 󱀄.
4. If you have selected the UT1 or UT2, "U1 0" or "U2 0" will be displayed on dis-
play unit Ⓐ. Then, specify the ancillary device setting item number with key 󱀁
and 󱀂.
5. Select the parameter you want to set from the following with keys 󱀃and 󱀄and
input it.
PLC center guide
(Interlocked with the
BT/DL/Initialization of
the FL)
PLC center guide
(Interlocked with the
BT/DL/FL)
PLC center guide
(Interlocked with the
BT)
PLC center guide
(Interlocked with the
BT/FL)

– 9 –
4-4. Piping of the air (PLC-2760NM)
CN151
CN152 CN154
CN155
CN153
Center guide
(With no wire mark)
AK
(Wire mark 󰴭)
BT
(Wire mark 󰴫)
DL
(Wire mark 󰴩)
Plug
(PX950013000)
Connect the air hose coming from the machine head to the position shown above while matching the number
of the air hose and the number of the port.
Insert the plug into the half union of the CN154.

– 10 –
When a hook has been replaced, be sure to check the
position of the hook needle guard.
As the standard position of the hook needle guard, hook
needle guard 󱀀must push the side face of needle 󰿿to
lean the needle by 0.05 to 0.2 mm away from its straight
position.
If the aforementioned standard state is not achieved,
insert a screwdriver (small) 󱀂into needle guard ad-
justment screw 󱀁and adjust the position of the needle
guard.
0.05 to
0.2 mm
󰿿
󱀀
󱀂
BA
󱀁
ab
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following
work after turning the power o󰀨 and ascertaining that the motor is at rest.

󱀁
󱀂
󰿿
󱀀
0.2 to 0.3 
󱀃
󱀄
1) Open the hook cover. (How to open : move the
hook cover to the right or left after lifting it right
above.)
2) Turn the handwheel in its normal rotational direc-
tion to bring bobbin case opening lever 󰿿to its
back end position.
3) Turn inner hook 󱀀in the direction of the arrow un-
til stopper 󱀁is pressed against the slits in throat
plate 󱀂.
4) Loosen bobbin case opening lever crank setscrew
󱀃. Adjust the clearance between the bobbin case
opening lever and protruding portion Aof the bob-
bin case to 0.2 to 0.3 mm.
5) Tighten setscrew 󱀃while pressing down bobbin
case opening lever crank 󱀄.
6) Move inner hook guide 󰿿up and down to make
sure that there is not play in the thrust direction.
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following
work after turning the power o󰀨 and ascertaining that the motor is at rest.
6. Adjusting the bobbin case opening lever
In case of 2-needle machine, perform the
same adjustment to the right and left hooks.
5. Adjusting the hook needle guard
1) To bend the hook needle guard in direction a, turn the needle guard adjusting screw in direction A.
2) To bend the hook needle guard in direction b, turn the needle guard adjusting screw in direction B.

– 11 –
1） For the right hook, loosen the setscrew in the side
cover on the operator's side to remove the side
cover.
(For the left hook, remove the side cover on the
opposite side of the operator.)
2） Loosen opener cam setscrew 󱀃.
3) Turn the handwheel until the marker dots on the
handwheel, as shown in the table, are aligned with
the marker dots (without the thread trimmer) on
the machine arm or with the marker lines (with the
thread trimmer) on the motor cover. At this time,
tighten opener cam setscrew 󱀃at the position
where opener 󰿿starts to move from the position
that is farthest from the protruding portion C of in-
ner hook 󱀀.
At this time, tighten opener cam setscrew 󱀃in
such a way that a clearance of 0.2 to 0.5 mm is
provided between the top surface of opener cam
󱀄and the undersurface of opener arm 󱀅.
4) Install the side cover with the side cover setscrew.
Check to make sure that the marker dots
(four) on the handwheel are aligned with the
marker dots (without the thread trimmer) on
the machine arm or with the marker lines
(with the thread trimmer) on the motor cover
when the needle bar is at its upper dead
point.
In the case of the 2-needle sewing machine,
opener arm clamping screw 󱀂 of the left
hook is located on the opposite side of the
operator.
󱀂
7. Adjusting the timing of the opener
󱀁
0.2 to 0.5 mm
󱀀
󰿿
󱤪
󱀂
󱀃
󱀄
Right hook Three marker dots
Left hook Two marker dots
[Conditions]
With the thread trimmer
Marker dots on the handwheel
and marker lines on the motor
cover
Without the thread trimmer
Marker dots on the
handwheel and marker
dots on the machine arm
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following
work after turning the power o󰀨 and ascertaining that the motor is at rest.

– 12 –
Marker dots on the handwheel (PLC-2700NM)
Screw No.1 of the
handwheel A
For adjustment of the opener
cam timing (left hook)
(two marker dots)
For adjustment of the opener
cam timing (right hook)
(three marker dots)
Upper dead point of the
needle bar
(four marker dots)
Marker dots on the handwheel (PLC-2700NM-7)
Upper stop position
(one marker dot)
Upper dead point of the
needle bar
(four marker dots)
For adjustment of the opener
cam timing (left hook)
(two marker dots)
For adjustment of the opener
cam timing (right hook)
(three marker dots)

– 13 –
󱀅󱀅
󱀆󱀆
󱀅󱀅
󱀄
󱀃
󱀀󱀀󱀁󱀁
󱀇
󰿿󰿿
󱀂󱀂
0.1 to 0.2 
[Position of the thread trimmer cam]
1. Let the sewing machine fall down.
2. Set the thread trimmer solenoid to initial position.
3. Loosen three setscrews 󱀅of the thread trimmer solenoid mounting plate. Adjust the thread trimmer solenoid
mounting plate 󱀆so that the clearance between the thread trimmer cam roller 󱀀and the dwell section of
thread trimmer cam 󱀁is 0.1 to 0.2 mm in the state that the moving knife driving arm link 󱀃is in contact with
the roller 󱀄. Then tighten three setscrews 󱀅of the thread trimmer solenoid mounting plate.
4. Raise the sewing machine.
8. Position of the thread trimmer cam
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following
work after turning the power o󰀨 and ascertaining that the motor is at rest.
Close contact
Check that the end face of thread trimmer cam 󱀁 comes in close contact with the end face of collar 󱀂.
Fix the lower shaft set collar 󱀇 in a position so that the end face of lower shaft set collar 󱀇 is almost
aligned with the end face of lower shaft 󰿿󰿿.

– 14 –
9. Adjusting the position of the moving knife
1) Loosen the bed cover setscrews (1-needle machine: Two pieces; 2-needle machine: Four pieces) to remove
the bed cover.
2) Loosen clamping screw(s) 󰿿(1-needle machine: One piece; 2-needle machine: Two pieces) of the moving
knife shaft connecting arm A.
3) In the state where the at surface of the thread trimming cam and the cam roller come in contact with each
other, adjust the distance between the tip of counter knife 󱀁and the tip of moving knife 󱀀to 1.3 ± 0.1mm.
4) Tighten clamping screw(s) 󰿿(1-needle machine: One piece; 2-needle machine: Two pieces) of the moving
knife shaft connecting arm A in such a way that there is no thrust play in moving knife driving shaft 󱀂.
󰿿
󱀂󱀂
󱀁󱀁
󱀀󱀀
1.3 ± 0.1 mm
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following
work after turning the power o󰀨 and ascertaining that the motor is at rest.

– 15 –
󱀁󱀁
󱀃󱀃
󱀂󱀂
󰿿󰿿
󱀁󱀁
󰿿󰿿
󱀃󱀃
1 mm
󱀀󱀀
Press against the end face
10. Adjusting the position of the clamp spring
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following
work after turning the power o󰀨 and ascertaining that the motor is at rest.
1) Loosen clamp spring setscrew 󰿿.
2) Move moving knife 󱀀to the position where it does
not come in contact with clamp spring 󱀁.
3) Slide clamp spring 󱀁while keeping it pressed
against the end face of counter knife base 󱀂.
4) Adjust clamp spring 󱀁so that it protrudes 1 mm
from the end face of counter knife 󱀃.
5) Tighten clamp spring setscrew 󰿿.
6) Return moving knife 󱀀to its initial position. Then,
check that it comes in light contact with clamp
spring 󱀁.
Press against
the end face

– 16 –
11. How to adjust the cam timing
1) Set the stitch dial to "6".
2) Set the alternating vertical movement dial to "3".
3) Tilt the machine head.
4) Loosen vertical feed cam setscrews 󱀃(two piec-
es).
5) Turn vertical feed cam 󱀂in such a way that needle
󰿿, throat plate 󱀀and feed dog 󱀁are positioned
as shown in the gure on the left.
6) Tighten vertical feed cam setscrews 󱀃(two piec-
es).
7) Raise the machine head.
󱀁
󰿿
󱀀
󱀃󱀃
󱀂󱀂
Lower shaft
C
D
Top end of the eyelet of needle 󰿿, top surface of throat
plate 󱀀 and top surface of feed dog 󱀁 are aligned
[Conditions]
Amount of feed: 6 mm
Alternating vertical movement amount: 3 mm
When the needle comes down and the feed dog
goes up
11-1. Timing of the vertical feed cam
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following
work after turning the power o󰀨 and ascertaining that the motor is at rest.

– 17 –
1) Set the stitch dial to "6".
2) Set the alternate vertical dial to "3".
3) Remove the top cover.
4) Loosen top feed cam setscrews 󱀄(two pieces).
5) On the condition that the amount of the alternating
vertical movement of the walking foot and presser
foot is uniform, turn top feed cam 󱀃in such a way
that needle 󰿿, throat plate 󱀀, walking foot 󱀁and
feed dog 󱀂 are positioned as shown in the gure
on the left.
6) Tighten top feed cam setscrews 󱀄(two pieces).
7) Attach the top cover in place.
11-2. Top feed cam timing
󱀂
󰿿
󱀀
󱀁
Top end of the eyelet of needle 󰿿, top surface of
throat plate 󱀀, undersurface of walking foot 󱀁 and
top surface of feed dog 󱀂 are aligned.
󱀀
󰿿
󱀁
󱀂
[Conditions]
Amount of feed: 6 mm
Alternating vertical movement amount: 3 mm
When the needle and the walking foot come down
󱀄
󱀃
󱀄
󱀃
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following
work after turning the power o󰀨 and ascertaining that the motor is at rest.

– 18 –
1) Loosen eight setscrews 󱀂of the post window plate
to remove the post window plate 󱀃.
2) Set the stitch dial to “6”.
3) Loosen hinge screw nut 󰿿of the horizontal feed
rear arm.
4) Tighten hinge screw nut 󰿿of the horizontal feed
rear arm at the position where the center of hinge
screw 󱀀of the horizontal feed rear arm aligns with
the marker line 󱤪of bottom feed connecting trian-
gle lever 󱀁.
5) Attach the post window plate 󱀃using eight set-
screws 󱀂of the post window plate.
(Standard) When Adjust the position of hinge screw
nut 󰿿 of the horizontal feed rear arm
in the direction of arrow A, the bottom
feed amount is decreased. When Adjust
the position of hinge screw nut 󰿿 of the
horizontal feed rear arm in the direction
of arrow B, the bottom feed amount is
increased.
When you change the bottom feed amount,
re-adjust since a change in the longitudinal
position of the needle entry.
12. Needle sway (Adjusting the bottom feed amount)
A
B
󰿿
󱀀
󱀂
󱀃
󱤪
󱀁
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the following
work after turning the power o󰀨 and ascertaining that the motor is at rest.