Anita GARUDAN GF-2131-443 MH/L34 Guide

User's manual and
Spare parts list
GF-2131-443 MH/L34
GF-2131-447 MH/L34
ANITA B s.r.o.
Průmyslová 2453/7
680 01 Boskovice
Czech Republic
tel: [phone]
[phone]
fax: [phone]
e-mail: [email protected]z
MP00400EN_171102

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All rights reserved
Property of Anita B and protected by copyright. The use of this content without written
permission is prohibited.
Copyright © Anita B s r.o. (2017)
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CONTENTS Page
1) SPECIFICATION 3
2) SAFETY PRECAUTIONS 4
3) BEFORE OPERATION 6
4) INSTALLATION 7
4.1 Installing the knee lifter 7
4.2 Installing the waste oil receiver 7
4.3 Lubrication 8
4.4 Adjusting the amount of oil in the hook 8
4.5 Adjusting the oil in the pump 9
4.6 Installing the synchronizer 9
4.7 Installing the belt cover and the bobbin winder 9
5) HOW TO ADJUST AND USE THE SEWING MACHINE 10
5.1 Attaching the needle 10
5.2 Threading the machine head 10
5.3 Adjusting the stitch length and reverse-feed stitching 11
5.4 Inserting the bobbin thread 11
5.5 Thread tension 11
5.6 Presser foot pressure 12
5.7 Hand lifter 12
5.8 Height of the feed dog 13
5.9 Adjusting the inclination of the feed dog 13
5.10 Adjusting the stitch length for forward and reverse stitching 13
5.11 Adjusting the walking foot and presser foot 14
5.12 Needle to hook relationship 15
5.13 Feed timing 16
5.14 Adjusting counter knife and movable knife 16
5.15 Position between counter knife and movable knife 17
5.16 Adjusting the thread trimming cam 17
5.17 Adjusting the amount of mesh of the movable knife blades 18
5.18 Adjusting the counter knife pressure 18
5.19 Adjusting auxiliary thread tension 18
5.20 One-touch type manual reverse stitching 19
6) TROUBLESHOOTING 20
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1) SPECIFICATION
Machine model Material use Speed Stitch Needle system Presser foot
(hand/knee)
GF-2131-443 MH/L34 Medium 2.500 8mm 135x17(90-160) 6/16 mm
GF-2131-447 MH/L34 Madium 2.500 8mm 135x17(90-160) 6/16 mm
Weight of machine head: 52 kg
Dimensions of machine head: 660x560x490 mm
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2) SAFETY PRECAUTIONS
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3) BEFORE OPERATION
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4) INSTALLATION
4.1 Installing the knee lifter
Fully draw out the knee lifter shafts (2) towards you. Then install it on the sewing machine.
Attach driving arm (1) to respective shafts (2).
Connect right and left driving arms (1) together
with link (3).
Install knee lifter lever (4) to driving arm (1) on the
left side. See fig.1
Fig.1
4.2 Installing the waste oil receiver
Fold mounting section (A) of waste oil receiver bracket (1) at a right angle. See fig.2
Fig.2
Remove one lateral bracing strut setscrew (2). Insert folded mounting section (A) of waste oil
receiver bracket (1) into the section between strut (3) and lateral bracing strut (4). Tighten
lateral bracing strut (4) and waste oil receiver bracket (1) with lateral bracing strut setscrew
(2) together. Place waste oil receiver (5) on waste oil receiver bracket (1). Insert tube (7)
coming from oil pan (6) into waste oil receiver (5). Adjust the length of tube (7) according to
the distance between oil pan (6) and waste oil receiver (5). See fig.3
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Fig.3
4.3 Lubrication
Fill the oil tank with oil up to line „H“ (1). Carry out periodical inspection while the sewing
machine is in use to check the oil quantity. If the oil surface level is below line „L“ (2), add oil
until the oil surface reaches line „H“ (2), see fig.4. Use „spindle oil“.
Run the sewing machine to check how oil splashes on oil sight glass (1). See fig.5.
Fig.4 Fig.5
4.4 Adjusting amount of oil in the hook
Turn screw (1) to adjust the oil quantity. Turning
screw (1) in the „+“ direction increases the oil
quantity, or in the „-„ direction decreases it. See
fig.6. After adjusting the oil quantity with the
screw, run the sewing machine idle for 30 seconds
or more. Then, check the oil being splashed from
the hook. Fig.6
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4.5 Adjusting the oil in the pump
In the standard state, bypass hole (2) is fully closed
with the adjusting plate (1). The wider bypass hole
(2) is opened, the less the oil quantity becomes.
See fig.7.
Fig.7
4.6 Installing the synchronizer
Screw whirl stop (5) into the tapped hole in the
arm in the fig.8 and fix it with nut (6).
Determine upper and lower stop position of the
needle by adjusting the angle of the synchronizer
(see more details in operation manual of the
servomotor).
Fig.8
4.7 Installing the belt cover and the bobbin winder
Bore wood-screw guide halls A,B,C,D in the table-top. Fit belt cover struts (1) and (2) in
tapped holes in the machine arm. Adjust position of bobbin winder (3) and fix it in guide
holes A and B with wood screws. Temporarily fix belt cover C (4) in guide holes C and D.
Mount belt cover A (5) and belt cover B (6) to struts (1) and (2). Adjust the position of belt
cover C (4) and fix it with the wood screw. See fig.9
Fig.9
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5) HOW TO ADJUST AND USE THE SEWING MACHINE
5.1 Attaching the needle
Turn off the power before starting to work.
The standard needle is 135x17 (DPx17). By special order, machine can also be equipped with
needle bar for needle 134R.
Turn the hand wheel to move the needle bar up to its highest position. Loosen needle
clamping screw (2) and hold needlem(1) so that long groove A in needle (1) faces exactly to
the left. Insert the needle into the needle (1) bar until it will go no further. Securely tighten
the needle clamping screw. See fig.10.
Fig.10
5.2 Threading the machine head
Bring the thread take-up lever to its highest position. Thread the machine head according to
the numbers in the fig.11 in the numerical order.
Fig.11
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5.3. Adjusting the stitch length and reverse-feed stitching
To change the stitch length,press push lever (1) and turn stitch dial (2). For reverse stitching
push reverse feed lever (3) down. The machine performs reverse feed stitching as long as
the lever is held depressed. Release the lever and the machine will immediately resume the
forward stitching mode. See fig.12.
Fig.12
5.4. Inserting the bobbin thread
Inert the bobbin thread with thread
(1) into the bobbin case (2) to allow
bobbin to turn in the direction of
the arrow when drawing bobbin
thread. See fig.13.
Fig.13
5.5 Thread tension
A. Adjustment of upper thread tension
Turn tension nut (1) towards (A) to increase the needle thread tension, or towards (B) to
decrease it.
B. Adjustment of bobbin thread tension
Turn the tension screw (2) towards (A) to increase the bobbin thread tension, or towards (B)
to decrease it. See fig.14.
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Fig.14
5.6 Presser foot pressure
Adjust the presser foot pressure according to the sewing product. The pressure of the
presser foot (1) and that of the walking foot (2) can be adjusted separately. Use the machine
with the minimum pressure which is necessary. See fig.15.
Fig.15
5.7 Hand lifter
Turning presser bar lifting lever (1) in the
direction of arrow (A) lifts the presser bar.
See fig.16.
Fig.16
5.8 Height of the feed dog
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Feed dog (1) is factory adjusted to jut out 1 mm from the surface of throat plate (2). When
the feed dog height needs to be adjusted according to the sewing specifications or after the
feed dog is replaced, do as follows: Loosen screw (3) and move feed bar (4) up and down to
adjust the height of the feed dog. Then firmly tighten the clamping screw. See fig.17.
Fig.17
5.9 Adjusting the inclination of the feed dog
The feed dog has been factory-adjusted so that it is levelled (horizontal state). Adjust the
inclination of the feed dog according to the sewing conditions. Loosen feed rock shaft crank
setscrew (1). Turn the eccentric shaft in direction „A“ (to lower the front section) or direction
„B“ (to raise the front section) while pressing the slot in eccentric shaft (2) with a
screwdriver. After the adjustment, firmly tighten feed rock shaft crank setscrew (1). See
fig.18.
Fig.18
5.10 Adjusting the stitch length for forward and reverse stitching
Loosen four mounting base setscrews (1). Turning stitch adjusting pin (2) in direction (A)
increases the stitch length for forward stitching. Turning stitch adjusting pin (2) in direction
(B) decreases the stitch length for reverse stitching. After the adjustment, firmly tighten the
four mounting base setscrews See fig.19.
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Fig.19
5.11 Adjusting the walking foot and presser foot
A. Amount of the alternating vertical movement of the walking foot and presser foot
Amount of the alternating vertical movement of the walking foot and presser foot is to be
adjusted with alternating vertical movement dial
(1) on the top cover. Align the number on the
alternating vertical movement dial with marker
dot (2) on the top cover. The number on the
alternating vertical movement dial indicates the
lift amount of the walking foot and presser foot
when the vertical movement amount of the
walking foot and that of the presser foot are
adjusted equally. In the case the vertical
movement amount of the walking foot and that
of the presser foot are adjusted equally, the lift
amount can be adjusted from 2.0 to 5.0mm with
the alternating vertical movement dial. See fig. 20. Fig.20
B. To change the balance of the alternating vertical movement between the walking foot
and presser foot
The vertical movement amount of the walking foot and that of the presser foot are equal as
standard. It is possible to slightly reduce vertical movement amount of the presser foot
according to the product. If it is needed
to increase the vertical movement
amount of the walking foot and decrease
that of the presser foot. Remove rubber
plug (1) of the top cover. Turn handwheel
until the presser foot goes up from the
throat plate and stop there. Loosen
walking bar adjusting lever clamping
screw (2). Since the presser foot comes
down to the surface of the throat plate
by the spring force, re-tighten walking bar
adjusting lever clamping screw (2) at that
position. See fig.21. Fig. 21
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C. Adjusting the feed pitch of the
walking foot
Top feed amount has been adjusted to
1:1 with respect to the bottom feed
amount. However, i tis possible to
change the top feed amount with
respect to the bottom feed amount
according to sewing conditions. Loosen
nut (1). Adjust the position of the block
up and down.
Upper position = feed pitch, small (A)
Lower position = feed pitch, large (B) See Fig.22. Fig.22
5.12 Needle to hook relationship
1) Positioning of needle bar
Tighten needle bar connection screw (3) in needle bar connection (2) so that the marker line
of the needle bar aligns with the bottom end of needle bar lower bushing (1) at the lowest
position of the needle bar. Fouth line „A“ from the bottom is for 134R needle, cecond line
„C“ from the bottom is for 135x17 (DPx17) needle. See fig.23.
2) Position of needle and hook
Adjust so that the specified market line (third line „B“ from the bottom is for 134R needle,
line „D“ at the bottom is for 135x17 needle) on the ascending needle bar aligns with the
bottom end of lower bushing (1). Further adjust to make hook point (4) nearly meet the
centre of needle (5) and adjust the clearance between needle (5) and hook point (4) to 0.02
to 0.07mm. Then tighten hook screw (6). To adjust the hook remove the throat plate first.
Loosen hook setscrew (6) with a screwdriver and adjust the hook position from the throat
plate side. See fig.23.
Fig.23
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5.13 Feed timing
Position between feed dog and needle can be adjusted by turning the cam (4). Set the upper
stop position of needle by turning the hand wheel. Set the cam so that after setting the
presser foot pressure the screw (2) on the cam (1) is in the axis of the shaft (3) and
simultaneously side edge of the screw (5) should be levelled with this axis. See fig.24.
Fig.24
5.14 Adjusting counter knife and movable knife
The standard position of the thread trimmer and that of the counter knife are as shown in
the figure 25. If the dimension in the figure is larger than 0.3mm, a three-thread trimming
error can occur causing slip-off of the needle thread after thread trimming. On the other
hand, if the dimension is excessively small, a thread trimming error can be caused.
Adjusting the counter knife:
Adjust the counter knife by moving counter knife blade (1) or knife mounting base (2) in the
direction „A“ or „B“. See figure 26.
Fig.25 Fig.26
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5.15 Position between counter knife and movable knife
The standard positioning of the thread trimer (left) (1) and counter knife (1) is as illustrated
in the figure 27. The thread trimer (left) (1) should be 9mm and the counter knife (2) should
be 5mm away from the center of the needle (3).
Fig.27
5.16 Adjusting the thread trimming cam
Standard position of the thread trimming cam is obtained when green marker dot (1) on the
handwheel aligns with marker dot (2) on the machine arm in the case the thread trimmer is
located as its initial position and thread trimming cam (3) comes in contact with cam roller
(4). Loosen thread trimming cam setscrew (5) and carry out adjustment. See figure 28.
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Fig.28
5.17 Adjusting the amount of mesh of the
movable knife blades
When knife (1) reaches its rtavel end, the
standard depth of mesh between knife (1) and
counter knife (2) is 1,5~2 mm.
Turn the handwheel by hand and move the
knife (1) upward. Loosen driving arm clamping
screw (3). Manually adjust the knife mounting
base (4). Securely tighten driving arm clamping
screw (3). See fig.29.
Fig.29
5.18 Adjusting the counter knife
pressure
Loosen locknut (1) of knife pressure
regulating screw (2). Turning screw (2) in
direction of „A“ lowers the blade tip to
increase the knife pressure. Then tighten
the nut. As the thread thickness increases,
the knife pressure should be increased.
However, it is necessary to minimize the
knife pressure as long as the thread is
trimmed by turning the screw in direction
of „B“. See fig.30.
Fig.30
5.19 Adjusing auxiliary thread tension
Adjust auxiliary thread tension with auxiliary
thread tension nut (1).
Direction „A“ to increase the tension. The
remaining length of the needle thread after
thread trimming is shortened.
Direction „B“ to decrease the tension. The
remaining length of the needle thread after
thread trimming is lengthened.
See fig.31.
Fig.31
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5.20 Reverse stitching
The sewing machine immediately is brought
into the reverse feed mode and starts reverse
stitching only by pressing switch (1). Reverse
stitching can be carried out as long as the
switch is held pressed. The sewing mchine is
brought into the normal feed mode by
releasing the switch. See fig.33.
Fig.33
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