Brother 2340CV User Manual
Cover Stitch Machine Operation Manual
Manual de instrucciones de la máquina de puntada de recubierto
I. Names of parts and their functions .............
II. Preparation before threading .....................
III. Threading ..................................................
IV. Types of stitches .....................................
Two needle three threads cover stitch ........
Chain stitch sewing .....................................
V. Sewing .....................................................
VI. Maintenance ...........................................
VII. Machine specifications ..........................
I. Nombres de las partes y sus funciones ....
II. Preparación antes del enhebrado ............
III. Enhebrado ..............................................
IV. Tipos de puntadas ...................................
Puntada de recubierto triple .......................
Puntada de recubierto de
dos agujas con tres hilos .................
Costura de puntada de cadena ..................
V. Costura ....................................................
VI. Mantenimiento ........................................
VII. Especificaciones de la máquina ............
"IMPORTANT SAFETY INSTRUCTIONS"
When using the sewing machine, basic safety precautions should always be followed, including the following.
"Read all instructions before using." DANGER – To reduce the risk of electric shock.
1.The sewing machine should never be left unattended when plugged in. Always unplug this sewing machine from the electrical outlet immediately after using and before cleaning.
2.Always unplug before relamping. Replace bulb with same type rated 15 watts.
WARNING – To reduce the risk of burns, fire, electric shock, or injury to persons.
1.Do not allow to be used as a toy. Close attention is necessary when the sewing machine is used by or near children.
2.Use this sewing machine only for its intended use as described in this manual. Use only accessories recommended by the manufacturer as contained in this manual.
3.Never operate this sewing machine if it has a damaged cord or plug, if it is not working properly, if it has been dropped or damaged, or dropped into water. Return the sewing machine to the nearest authorized dealer or service center for examination, repair, electrical or mechanical adjustment.
4.Never operate the sewing machine with any air openings blocked. Keep ventilation openings of the sewing machine and foot controller free from the accumulation of lint, dust, and loose cloth.
5.Never drop or insert any object into any openings.
6.Do not use outdoors.
7.Do not operate where aerosol (spray) products are being used or where oxygen is being administered.
8.To disconnect, turn the main switch to the symbol “O” position which represents off, then remove plug from outlet.
9.Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord.
10.Keep fingers away from all moving parts. Special care is required around the sewing machine needle.
11.Always use the proper needle plate. The wrong plate can cause the needle to break.
12.Do not use bent needles.
13.Do not pull or push fabric while stitching. It may deflect the needle causing it to break.
14.Switch the sewing machine to the symbol “O” position when making any adjustments in the needle area, such as threading needle, changing needle, or changing presser foot, and the like.
15.Always unplug the sewing machine from the electrical outlet when removing covers, lubricating, or when making any other user servicing adjustments mentioned in the instruction manual.
16.This sewing machine is not intended for use by young children or infirm persons without supervision.
17.Young children should be supervised to ensure that they do not play with this sewing machine.
CAUTION – This appliance has a polarized plug (one blade wider than the other) to reduce the risk of electric shock, this plug is intended to fit in a polarized outlet only one way.
If the plug does not fit fully in the outlet, reverse the plug.
If it still does not fit. Contact a qualified electrician to install the proper outlet. Do not modify the plug in any way.
"SAVE THESE INSTRUCTIONS"
"This sewing machine is intended for household."
•When leaving this sewing machine unattended, the main switch of the machine must be switched off or the plug must be removed from the socketoutlet.
•When servicing the sewing machine, or when removing covers or changing lamps, the machine or the electrical set must be disconnected from the supply by removing the plug from the
FOR USERS IN THE UK, EIRE, MALTA AND CYPRUS ONLY.
If your sewing machine is fitted with a 3 pin non rewireable BS plug then please read the following.
If the available socket outlet is not suitable for the plug supplied with this equipment, it should be cut off and an appropriate three pin plug fitted. With alternative plugs an approved fuse must be fitted in the plug.
NOTE: The plug severed from the mains lead must be destroyed as a plug with bared flexible cords is hazardous if engaged in a live socket outlet. In the event of replacing the plug fuse, use a fuse approved by ASTA to BS 1362, i.e. carrying theASA mark, rating as marked on plug.
Always replace the fuse cover, never use plugs with the fuse cover omitted.
WARNING: DO NOT CONNECT EITHER WIRE TO THE EARTH TERMINAL WHICH IS MARKED WITH THE LETTER ‘E’, BY THE EARTH SYMBOL OR COLOURED GREEN OR GREEN AND YELLOW.
The wires in this mains lead are coloured in accordance with the following code:
As the colours of the wiring in the mains lead of this appliance may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows.
The wire which is coloured blue must be connected to the terminal which is marked with the letter ‘N’ or coloured black or blue.
The wire which is coloured brown must be connected to the terminal which is marked with the letter ‘L’ or coloured red or brown.
CHOOSING THIS COMPACT COVER STITCH MACHINE
Your machine is a high quality,
If you need more information regarding the use of your machine, your nearest authorized dealer is always happy to be of service.
WHEN THREADING, REPLACING NEEDLE OR LIGHT BULB, BE SURE TO TURN OFF THE MAIN POWER SWITCH OF THE MACHINE.
WHEN THE MACHINE IS NOT IN USE, IT IS RECOMMENDED THAT THE ELECTRIC SUPPLY PLUG IS DISCONNECTED FROM THE WALL SOCKET TO AVOID ANY POSSIBLE HAZARDS.
Notes on the motor
•The normal operating speed of this sewing machine is 1,000 stitches per minute, which is quite fast compared to the normal operating speed of 300 to 800 stitches per minute for the ordinary
•The bearings in the motor are made of a special sintered,
•Continuous operation of the sewing machine can cause heat to build in the motor area, but not enough to adversely affect its performance.
It is important to keep fabric and paper away from the ventilating holes on the back and sides of the machine so air can get to these holes.
•When the motor is running, sparks can be seen through the ventilating hole in the motor bracket on the side opposite the hand wheel. These sparks are produced by the carbon brushes and the commutator, and are part of the machines normal operation.
WHEN THREADING THE MACHINE, REPLACING A NEEDLE, OR WHEN THE MACHINE IS NOT IN USE, WE RECOMMEND DISCONNECTING THE ELECTRIC SUPPLY PLUG TO AVOID ANY POSSIBLE HAZARDS.
I. Names of parts and their functions
H I L
1 Thread tree
2 Thread plate
3 Presser foot pressure adjustment screw
4 Spool pin
5 Spool cushion
6 Spool support
8 Material plate cover
0 Differential feed raito adjustment dial
A Stitch length adjustment dial
B Presser foot
C Front cover
D Hand wheel
E Main power switch and light switch
F Presser foot lifting lever
G Spool stand
H Left needle thread tension dial
I Center needle thread tension dial
J Right needle thread tension dial
K Looper thread tension dial
L Thread guide
N Looper release lever
O Lopper thread take up
P Foot controller:
J01780051 (110/120V Area)
XA6406051 (220/240V Area)
XA6410051 (Australia, New Zealand)
1 Soft cover
2 Accessory bag
4 Thread net (4)
5 Thread spool cap (4)
6 Spool mat (4)
7 Cleaning brush
8 Hexagonal wrench
9 Needle set: SCHMETZ 130/705H
0 Special presser foot (LC1) XB1265001 The special presser foot is used when an optional attachment is used.
Powering the machine
NOTE: (For U.S.A. only)
This foot controller can be used for sewing machine model 2340CV.
Main Power and Sewing Light Switch
This switch turns the power and sewing light on or off. To turn on push toward “ – ” mark. To turn off push toward “” mark.
1Main Power and Sewing Light Switch
When the pedal is pressed lightly, the machine runs at a low speed. As the pedal is pressed further, the machine will increase speed. When the pedal is released, the machine stops.
2Foot Controller: Model N
Turning direction of motor
•The motor and hand wheel of this machine turn in a counterclockwise direction (direction of arrow). This is the same direction as an ordinary home sewing machine.
Opening and closing the front cover
It is necessary to open the front cover when threading this machine.
• Open the front cover by sliding it to the right and guiding the top toward you.
For your safety, make sure that the front cover is closed when operating the machine.
How to attach and remove the presser foot
Always be sure to turn off the power before carrying out this operation.
• Turn off the main power switch or disconnect the electric supply plug.
(1)Raise the presser foot lever. 1
(2)Set the needle to its highest position by turning the hand wheel 2 counter clockwise.
(3)Push the button on the presser foot holder and the standard foot will be released. 3 4
(4)Raise the presser foot farther by pushing the presser foot lever upward. Then remove the presser foot and store it in a safe location.
(5)Again, raise the presser foot farther by pushing the presser foot lever upward. Then place a presser foot just under the presser foot holder A so that the groove in the bottom of the presser foot holder B is aligned and catches the bar on the top of the foot C. Then lower the presser foot lever to attach the foot.
To change the stitch length,
(1)Locate the stitch length adjustment dial on the left side of the machine.
(2)Turn the stitch length adjustment dial forward to lengthen the stitch to a maximum of 4 mm (5/32 inch). Turn the stitch length adjustment dial backwards to shorten the stitch length to a minimum of 2 mm (5/64 inch).
(3)The normal stitch length setting is 3 mm to 4 mm (1/8 to 5/32 inch)
Instructions for the differential feed mechanism
This machine is equipped with two sets of feed dogs
under the presser foot to move the fabric through the
machine. The differential feed controls the movement of
both the front and the rear feed dogs. When set at 1, the
feed dogs are moving at the same speed (ratio of 1).
When the differential feed ratio is set at less than 1, the
front feed dogs move slower than the rear feed dogs,
stretching the fabric as it is sewn. This is effective on
lightweight fabric that may pucker. When the differential
feed ratio is set at greater than 1, the front feed dogs
move faster than the back feed dogs, gathering the fabric
as it is sewn. This function assists in removing the rippling
when serging stretch fabrics.
• To adjust the differential feed.
(1)Locate the differential feed adjustment lever on the left
side of the machine.
(2)The normal setting is 1.0 on the differential feed
(3)To set less than 1.0, move the lever back.
(4)To set greater than 1.0, move the lever forward.
Main feed (rear)
Differential feed (front)
0.7 – 1.0
Material is pulled
Prevents thin mate-
rials from puckering
1.0 – 2.0
Material is gath-
Prevents stretch ma-
ered or pushed
terials from stretch-
ing or puckering
• An example where adjustment is required
When stretch material is sewn without using the differential feed, the material will be wavy.
To make the material more smooth, adjust the feed ratio from 1.0 toward 2.0.
(The feed ratio required depends on the elasticity of the material.)
The more elastic the material, the further toward 2.0 the differential feed ratio should be set. Test sew with a scrap of the fabric to find the correct adjustment.
When sewing thick
Presser foot pressure
5 10mm (3/8 inch)
•The pressure of the presser foot can be adjusted by turning the pressure adjustment screw at the top left of this machine. Since this machine has already been adjusted to a pressure suitable for light to medium fabrics, no further adjustment is necessary except
when sewing on very heavy or very light materials.
4Usually, when sewing on very light materials, the presser foot pressure should be loosened. When
sewing very heavy materials, the presser foot pressure should be tightened.
1Pressure adjustment screw
4Pressure adjustment screw
5(Standard height for medium material)
6 7 8
When front needles are inserted correctly you can see the top of the needle in the window (5) above each needle position.
Always be sure to turn off the power before carrying out this operation.
Do not drop the needle and needle set screw in the machine, otherwise it may be damaged.
This machine uses a standard home sewing machine needle.
The recommended needle is SCHMETZ 130/705H (90/#14).
To remove the needle
(1)Turn the main power switch to the OFF position. (2)Turn the hand wheel
the needle is at its highest position.
(3)Loosen the needle set screw with hexagonal wrench and remove the needle.
To insert the needle
(1)Turn the main power switch to the OFF position. (2)Turn the hand wheel until the needle bar is at its
(3)Hold the needle with its flat side away from you and insert it up as far as it will go.
(4)Tighten the needle set screw securely with the hexagonal wrench.
1Needle set screw
How to check the needle
66Place the needle on its flat side and check to see if the space is parallel.
Countermeasures for material breakage.
It can reduce the occurrence of material breakage by using SCHIMETZ 130/705H SUK (90/#14) BALL POINT.
II. Preparation before threading
Raise the telescoping thread tree to its highest position.
Make sure that the thread holders are in alignment above
the spool pins as illustrated left.
1Thread holder on thread tree
The procedure for placing the spool of thread on the spool pin differs according to the shape of the spool.
If you are sewing with loosely
spun nylon thread, we recom-
mend that you cover the spool
with the net supplied to prevent
the thread from slipping off the
Adapt the net to the shape of the
(1)Turn off the main power switch for safety.
(2)Set the needle bar in its highest position by turning the handwheel toward you.
Turn the handwheel to find the easiest position for threading.