Lervia KH 4000 Owner Manual

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KH4000 Automatic Free-Arm Sewing Machine

Operating instructions

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Lervia Automatic Free-Arm Sewing Machine

1. Intended Use

2. Technical data

3. Package contents

4. Operating elements

5. Safety instructions

6. Setting up

7. Switching On / Off

8. Threading a) Threading the lower bobbin b) Threading the lower thread c) Threading the upper thread d) Retrieving the lower thread e) Threading with 2 needles

9. Attaching accessories a) Changing needles b) Changing the stitch plate c) Changing the snap-on foot

10. Settings a) Setting the upper thread tension b) Setting the lower thread tension c) Setting the presser foot pressure d) Setting the stitch width e) Setting the stitch length

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11. Sewing a) To place the material b) To start a seam c) To finish off a seam d) Guiding the material e) Changing the sewing direction f) Selecting a stitch pattern g) Straight stitch h) Zigzag j) Blind hem k) Material-Thread-Needle Table l) Seam guide m) Overcast stitch n) Stretch seams o) Sewing buttonholes p) Buttonhole table q) Sewing on buttons r) "Edge-to-edge" sewing s) Decorative stitches t) Sewing a zipper u) Sewing with the twin needle v) Embroidery w) Thread cutter

12. Care a) Clean the gripper area b) Clean the feeder c) Clean the casing d) Oil the gripper track e) What else needs oiling?

f) Storing

13. Troubleshooting

14. Warranty and service

15. Disposal

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Lervia KH 4000

Operating instructions

Lervia Automatic Free-Arm Sewing

Machine

1. Intended Use

The sewing machine is intended ...

for use as a movable machine,

for sewing of typical household textiles and ...

only for private household use.

The sewing machine is not intended ...

to be installed at a fixed location,

for processing of other materials

(e.g. leather or other heavy materials such as tent or sail fabrics)

for commercial or industrial use.

2. Technical data

Power supply

Motor output

Bulb power

Bulb voltage

Bulb thread

Protection class

: 230 V / ~50 Hz

: 70 W

: 15 W

: 230 V / ~50 Hz

: E14 thread

: II

3. Package contents

(see front fold-out page)

●

1 sewing machine

1 blind hem foot

1 seam guide

1 zipper foot

1 buttonhole foot

1 button foot

1 sewing foot holder (attached)

1 finger protector (attached)

1 zigzag foot (attached)

1 knife

1 oil tube

1 set of needles (incl. twin needle)

3 screwdrivers

2 felt wheels

1 darning plate

3 bobbins

1 foot switch

●

Operating instructions

●

Warranty booklet

4. Operating elements

(see rear fold-out page) q Front cover w

Selector wheel (contact pressure sewing foot) e Threading hook r Selector wheel (upper thread tension) t

Upper thread guide y Selector wheel (stitch width) u Carrying handle i Thread spool carrier o Winder spindle a Spool stop

1!

Handwheel

1@ Selector wheel (stitch length)

1# ON / OFF switch

1$ Foot switch connection

1% Stitch pattern selector

1^ Foot lever

1& Adjusting foot

1* Bobbin case

1( Foot holder

2) Needle retainer

2!

Stitch plate

2@ Box compartment

2# Lever (reverse operation)

2$ Tension spring

2% Lamp

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5.

Safety instructions

Like any other electrical device, a sewing machine can cause serious, even life-threatening injuries.

To avoid this, and in order to work safely:

• Before initial use of your sewing machine, read these operating instructions thoroughly.

• Keep the operating instructions in a suitable place near the machine. When passing the appliance on to others, always enclose the operating instructions.

• Always disconnect the power supply when leaving the machine unattended.

This will prevent the risk of accidents if the machine is switched on accidentally.

• First pull the power plug before changing the bulb or performing maintenance work on the machine.

This will prevent possibly life-threatening electric shocks.

• Do not remove the plug from the socket by pulling on the cable. Always grip the plug and not the cable when pulling out the power plug.

• Only use the sewing machine in dry rooms.

• In case of any visible damage on the machine, the foot switch or the power cable: Have the damage repaired by Customer Service before using the sewing machine again.

• Never let children or elderly persons handle the machine unsupervised because they may not properly appreciate the possible dangers.

Keep electrical appliances outside the reach of children.

• Never use the machine when the ventilation apertures are blocked. Keep the ventilation apertures of the machine and the foot switch free from fluff, dust and waste material.

Lervia KH 4000

Warning against injuries and material damages:

According to legislation, you as the user of an electrical appliance are responsible for preventing possible accidents through safetyconscious behaviour:

• Keep your work space tidy. An untidy workplace can lead to accidents.

• Provide adequate lighting when working!

• Do not wear loose clothing or jewellery, as these can be caught in the moving parts.

You should also wear a hair net if you have long hair.

• Avoid abnormal posture . Remain steady and in a well-balanced position at all times.

• Be alert!

Pay attention to what you are doing.

Always take a rational approach to your work.

Never work with the sewing machine if you are unable to concentrate or if you are feeling unwell!

If accidents occur as a result of handling the machine with insufficient care, or failure to follow the safety instructions in this manual, then the manufacturer cannot accept liability.



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Lervia KH 4000

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6. Setting up

• Place the sewing machine on a stabile table.

• Plug the foot switch into the connection socket g of the machine and ...

• insert the plug into the wall socket.

If the worktop is not completely even , you can compensate for slight unevenness as follows:

• Pull the box compartment 2@ off to the side, it is only slid on, not firmly attached.

• You can turn the adjusting foot 1& that becomes visible underneath in order to make the sewing machine rest properly.

You can simply slide the box compartment 2@ back on – for instance if you need this as an

"extension table" for sewing large material.

You can also leave the box compartment 2@ off, for example for free-arm sewing of arms, trouser legs, etc. The box compartment 2@ is also used to store the accessories.

7. Switching On / Off

You should familiarize yourself with these methods of switching on and off, so that you can take the correct action in the event of an emergency:

• You can switch the sewing machine on or off by pressing the switch 1# . The bulb

2% indicates the operating state.

• If you pull out the foot switch plug , the machine is without power.

• If you pull the power plug from the socket, the machine and the foot switch are without power.



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Lervia KH 4000

8. Threading

Warning:

Make sure that the sewing mahine is switched off and the plug has been pulled out of the socket when threading in order to avoid injury if the sewing machine should be accidentally switched on.

a) Threading the lower bobbin

To load the lower bobbin with thread:

• Pull out one of the two thread spool carriers i on top and place a spool of thread there.

• You can place a felt pad underneath the spool of thread , so that the bobbin runs evenly.

• Place an empty spool on the winder spindle o .

• Pull the thread through the upper thread guide t .

• Wind the loose end of the thread clockwise a few times around the empty spool .

• When the first windings of thread are taut against the spool, press the spool with the winder spindle o against the spool stop a .

• Pull the handwheel s on the right of the machine slightly outward in order to disconnect the sewing mechanism from the motor.

• Now switch the sewing machine on and step on the foot switch . Once the spool is full, cut the thread.

• Press the winder spindle o back to the left and remove the full spool.

• Do not forget to push the handwheel s back in – otherwise the sewing mechanism remains disconnected from the motor.

s



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Lervia KH 4000 b) Threading the lower thread

Turn the handwheel s in an anti-clockwise direction to fully raise the needle.

• Pull the box compartment 2@ off to the side, it is only slid on, not firmly attached.

• Then open the gripper flap “ situated behind it.

18a

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• Fold out the folding lever 18a of the bobbin case l ...

1*

1*



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• and pull out the bobbin case l as shown.


1*

Lervia KH 4000

• Unwind approximately 10 cm of thread from the spool and slide this into the bobbin case l so that the spool unwinds anti-clockwise.

18c

18b

18d

• Pull the unwound end of the thread through the gap 18b in the side wall of the bobbin case ...

• under the tension spring 18c ,



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• until the thread comes out the slit the bobbin case.

18d in

For optimal setting of the lower thread tension, see Chapter 10.


Lervia KH 4000

• Put the bobbin case l back on the pin and ...

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1*

18e • turn the bobbin case l until the driver 18e catches in the notch.

• Lay the excess thread such that it does not bind anywhere ...

• then close the gripper flap ” .

2@



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• You can simply slide the box compartment

2@ back on – for instance if you need this as an "extension table" for sewing large material. You can also leave the box compartment off, for example for free-arm sewing of arms, trouser legs, etc.

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19 b j i

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Downloaded from c) Threading the upper thread

To pass in the upper thread, it is not necessary to open the front of the sewing machine. The illustration is for guidance only. Before you begin threading, turn the handwheel s anti-clockwise to position the threading hook e in the uppermost position. Use the foot lever j to raise the needle retainer ; .

• Pull out one of the two thread spool carriers i on top and place a spool of thread there.

• You can place a felt pad underneath the spool of thread, so that the bobbin runs evenly.

• Guide the thread through the upper thread guide t , ...

• over the selector wheel for the upper thread tension r , ...

• underneath the tension 2$ spring, ...

• over the threading hook e ,

• through the thread guide 19 a , from the front through the eye of the needle 19 b and finally under the needle retainer ; towards the back.

• Lower the needle retainer ; with the foot lever j .




Lervia KH 4000

” d) Retrieving the lower thread

• Turn the handwheel s in an anti-clockwise direction to fully raise the needle.

• Use the foot lever j to raise the needle retainer ; .

• With the left hand, firmly hold the end of the upper thread that comes through the eye of the needle.

• Then use your right hand to turn the handwheel s one full turn anti-clockwise.

• The upper thread now pulls up the lower thread in a loop ” .

• As soon as the lower thread appears, pull carefully on the upper thread held in your left hand. In this way, you can pull the lower thread clear.

• Pull out the two threads by about 10 cm.

• and lay these away to the back, as shown.

The sewing machine is now ready to use.

e) Threading with 2 needles

When you have inserted the twin needle as described in Chapter 9:

• Pull out both thread spool carriers i on top and place two spools of thread there.

• You can place a felt pad underneath the spool of thread , so that the bobbin runs evenly.

• Run both upper threads exactly as they would be run for threading a single thread, ...

• except for threading at the needle: in this case, thread the two ends of the upper threads separately through the two needle eyes.

• The lower thread is then threaded in exactly the same way and lifted upward, as for a single thread.



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Lervia KH 4000

9. Attaching accessories

Warning:

Make sure that the sewing machine is switched off and the plug has been pulled out of the sokket to prevent accidents caused by un-intentional switching on.

a) Changing needles


• Loosen the clamping screw 20 a and pull the old needle out.

• Insert the new needle, with the flat side toward the back . Insert it up to the top

• and tighten the clamping screw 20 a again well when finished.



- 13 b) Changing the stitch plate

At the factory, the "zigzag" stitch plate is inserted, which can be used for most stitching work and decorative seams. However, if you wish to use the darning plate supplied:


• Insert the darning plate into the existing zigzag stitch plate so that the flat guide pins grip into the recesses in the existing plate.

• If you no longer need the darning plate, simply remove this again.


Lervia KH 4000

19 d

; c) Changing the snap-on foot

With the sewing machine you are provided with four snap-on-feet, which you can simply use as required: blind hem foot zipper foot buttonhole foot button foot

To change the snap-on foot:


• Position the foot lever j in the upward position in order to lift the needle retainer ; up.

• Press the lever 19 d upward. The snap-on foot can now be easily removed from the needle retainer ; .

• Now place the new snap-on foot under the needle retainer ; . Make certain that the notch on the needle retainer is located directly above the metal pin of the snap-on foot.

• Press the foot lever j back down and let the needle retainer

; slide into the snap-on foot.

19 c

To uninstall the needle retainer ; :

• Loosen the foot screw 19 c and pull the needle retainer ; off downward, including the finger protector .

To install the needle retainer ; :

• Place the needle retainer ; including finger protector back onto the guide rod and tighten the foot screw 19 c again.



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Lervia KH 4000

10. Settings

The tension of the upper and lower thread is set correctly if the twining of the two threads cannot be seen on the top or bottom sides of the material after sewing.

If even one of the two tensions is not set correctly , an unclean seam will result. The stitches will then lie flat on the material. a) Setting the upper thread tension

• You can select the strength of the upper thread tension by turning the selector wheel for the upper thread tension r . If this thread is ...

- too tight (higher setting), then the upper thread is loose and the material is being

'sewed' with the lower thread only.

- too loose (lower setting), then the lower thread is loose and the material is being

'sewed' with the upper thread only.

The upper thread tension is normally between 4-6.

b) Setting the lower thread tension

• You can set the strength of the lower thread tension by turning the screw 18f on the bobbin case l . Turn it ...

- clockwise to increase the tension.

- anti-clockwise to reduce the tension.

Be certain not to turn the screw 18f completely out of the bobbin case l .

• The lower thread tension is set correctly if the bobbin case l can be turned slowly and evenly ("fall down test").

l



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Lervia KH 4000 w y s d c) Setting the presser foot pressure

Here you can set the pressure with which the material is pressed onto the stitch plate.

• Now set the contact pressure on the selector wheel w .

"0" if no pressure is to be applied, for example for darning with free-hand stitches

"1" for light fabrics (curtains)

"2" for average fabrics (normal)

"3" for heavy fabrics (jeans).

d) Setting the stitch width

Here you can set the width of seam for zigzag patterns.


• Select a stitch width from 0 - 5 on the selector wheel y ...

"0" straight

"1" narrow

"5" wide

Important: When the twin needle is inserted, the selector wheel may not be set any higher than "3". A higher setting will cause the twin needle to break!

e) Setting the stitch length

Here you can set how far the material is to be transported during sewing. This therefore determines the gap (length) between the stitch points.

• Select the stitch length from 0 - 4 on the selector wheel d ...

"0" if the material should not be transported.

"1" short

"4" long



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Lervia KH 4000

11. Sewing

If you have placed the thread and everything is set correctly, as described in the previous chapters: a) To place the material


• Use the foot lever j to raise the needle retainer ; .

• Place the material under the sewing foot and lower the sewing foot back down.

b) To start a seam

• Hold the two thread ends run to the back ” firmly with the left hand.

• Step very carefully on the foot switch – just enough to do the first 3-4 sewing motions.

While doing this, guide the material with the right hand.

• Once the first sewing motions have been performed successfully, hold the lever for backward operation 2# pressed briefly ...

• and press again on the foot switch – just until you have returned to the starting point of the seam. When you now want to continue with the seam from that point, it is held firmly by several overstitches.

c) To finish off a seam

Sew back and forth at the end of the seam using the reverse lever, as at the start of the seam.

The end of the seam is now also held firmly.



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Lervia KH 4000 d) Guiding the material

• Only guide normal materials as shown in the diagram. Avoid pulling it, as this can cause the needle to bend or break.

• Very fine materials pull inward slightly during sewing. To prevent this, lay a thin paper under the material and sew this in with the material.

When you have finished sewing, carefully pull the paper away from the material; the result is a very clean stitch.

• For stretchable materials, it can be necessary to guide the material in before and after the sewing foot to prevent it from pulling in.



- 18 e) Changing the sewing direction

You have arrived at a certain point, and you now want to continue sewing in a different direction.

• The simplest way to do this is to hold the turning point and let the needle stick in the material.

• Use the foot lever holder ; .

j to raise the needle

• Pull the material around the needle in the desired direction

• then lower the needle retainer ; down.

You can now continue sewing in the usual way in the new direction.

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Lervia KH 4000 f) Selecting a stitch pattern

To select a particular pattern, take the following steps:

• Select the stitch pattern with the stitch pattern selector h .

• Select the stitch length by means of the d selector wheel.

• Select the stitch width by means of the selector wheel y .

• Attach the respective snap-on foot , as described in Chapter 9.

You can find the required settings in the table on the next page . If two values are set for the stitch length, these are understood as "from ... to ..." values.

g) Straight stitch

This is the most frequently used type of stitch.

The zigzag sewing foot is used for both straight and zigzag stitches. A smaller size of stitch should be selected for sewing finer materials.

h) Zigzag

The zigzag stitch is universal. The zigzag stitch pattern consists of short stitches set closely after one another and is suitable for sewing initials, figures, appliqués etc.



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Lervia KH 4000 i) Stitch pattern table

Stitch pattern

A

B-E

Straight stitch

Zigzag

F Blind stitch

G

H

I

Blind hem

Three-step zigzag stitch

Slant over edge stitch

J Single overlock stitch

K Honeycomb stitch

N

O

L 3-fold zigzag

M Stretch straight stitch

Shell stitch

Honeycomb stitch p 3-edged block stitch q

R-T

Semi-circular stitch

Buttonhole

Free-hand embroidery

Stitch length Sewing foot Stitch width

0

1-5

3-5

3-5

3-5

3-5

Without

3-5

3-5

3-5

3-5

5

0-5

3-5

3-5

2-5

0

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Lervia KH 4000 j) Blind hem

• Fold the material as shown. Make the fold as wide as you want the finished seam to be: The lower fold should be inset by about 5 mm.

• Use the blind hem foot . While sewing, check the hem width and needle position to be sure the hem is even.



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• Sew the blind hem on the underside of the material, so that only the peak of the zigzag stitch pierces the top part of the material.

When you have finished sewing, push the left of the material over to the right and smooth out. The seam is almost invisible!

The table on the next page shows a suggestion for setting the various values depending on the material used.


Lervia KH 4000 k) Material-Thread-Needle Table

Please refer to the details for the various materials.

Material Thread Needle

Presser foot pressure

See p. 16

Stitch length Upper thread tension

Straight stitch

ZZ

Stitch length selection

Light

Middle

Nylon

Cotton jersey

Silk

Woll-silk

Cotton

80

Man-made fibre

60

Silk

50

Man-made fibre

50 silk

70

(10)

80

(12)

Poplin

Gabardine

Cotton

60-80

Fine Jersey

Man-made fibre

60

Silk

50

80-90

(12-14)

80

(12)

Heavy Denim

Jersey

Tweed

Cotton

50

Man-made fibre

50

Silk

50

90-100

(14-16)

80-90

(12-14)

80-90

(12-14)

1

2

3

1-3 1-4

0.5-3 0.5-4

0.5-3 0.5-4



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Lervia KH 4000 l) Seam guide

• Use the seam guide for sewing longer hems or seams that should have an even distance to the edge of the material.

• Screw the seam guide into the threaded hole on the right of the stitch plate 2!

.

Set the desired seam width, then tighten the knurled screw.

• While sewing, the edge of the material must touch the seam guide. The seam guide can also be screwed in obliquely for sewing corners.

m) Overcast stitch

• Select the stitches (H, I, J) if you want to prevent the fraying of the cut edges.

H, I, J

M, L



- 23 n) Stretch seams

• Select the stiches (M or L) for knitted, Jersey and other stretchable textiles. This type of seam can be stretched without the thread breaking. The stretch seam stitch produces a highly strain-resistant, straight seam.


Lervia KH 4000 o) Sewing buttonholes

• Attach the buttonhole foot , as described in Chapter 9.

• Refer to the table for:

- the required stitch length

- the required stitch pattern

- the required method for sewing.

• When finished, you can cut the buttonhole in the middle, as shown.

p) Buttonhole table

Pattern selector

(Stitch pattern)

R

S

T

S

Sewing

Method

Settings/stitch length

1. Set selector to "R"

2. Sew the left side

3. Raise needle

4. Set selector to "S"

5. Sew 5-6 stitches

6. Raise needle

7. Set selector to "T"

8. Sew the right side

9. Raise needle

10. Set selector to "S"

11. Sew 5--6 stitches

12. Raise needle



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Lervia KH 4000 q) Sewing on buttons

• Attach the button foot and ...

• place the darning plate on the existing zigzag stitch plate, as described in Chapter 9.

• Lay the button between the button foot and the material and lower the button foot down.

• Turn the handwheel s anti-clockwise.

Check whether the needle passes cleanly through both button holes.

• Adjust the stitch width of the zigzag mode as necessary.

• If the sewing machine hits both button holes during hand operation, you can now sew 5-7 stitches with the machine by carefully pressing on the foot switch .

r) "Edge-to-edge" sewing

• To do this, select the three-stitch zigzag

("H") or the honeycomb stitch ("K") as the stitch pattern.

K H

N O P Q



- 25 s) Decorative stitches

• Select the stitch patterns (N-Q ) if you want to apply various decorative stitches to your textiles.


Lervia KH 4000 t) Sewing a zipper

Using the zipper foot you can sew along the right and left-hand edges of the zipper without damaging the zipper or the needle.

The zipper foot is also useful for sewing edges or parallel seams.

• Attach the zipper foot , as described in

Chapter 9.

• Then select the straight stitch (A) as stitch pattern.

• Fold over approximately 2 cm of material and lay the zipper under the material fold such that the links just protrude. It might be helpful to stitch in the zipper first.

• Then sew as closely as possible along the zipper links.

- To sew the left side of the zipper , the foot must be placed to the left of the needle.

- To sew the right side of the zipper , the foot must be placed to the right of the needle.



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Lervia KH 4000 u) Sewing with the twin needle

• Insert the twin needle with the flat side toward the back .

• Thread the thread as for normal sewing.

Both threads are threaded together through the guides – up to the twin needle.

• Only there are the two upper threads threaded separately .

• Make certain that the setting for the stitch width is not greater than "3" – otherwise, the needle will break off.

v) Embroidery

Important : When embroidering, the foot lever 1^ must be in the bottom position, otherwise the upper thread tension is disabled.

• Take the needle retainer ; off and ...

• place the darning plate on the existing zigzag stitch plate, as described in Chapter 9.

• Select an appropriate stitch pattern (A or B).

• The stitching is now performed free-hand.

Move the material tensioned in the embroidery frame according to the embroidery pattern while controlling the speed of the needle movements with the foot switch .

w) Thread cutter

When you have completed a seam, or if you wish to cut the threads for any other reason:

• Simply pull the thread over the sharp blade above the needle retainer ; to cut off the thread.

;



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Lervia KH 4000

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12. Care

After each use, remove any pieces of thread, material, and fluff. Only in this way will you ensure that the sewing machine continues to work correctly and lasts for a long time.

Warning:

Make sure that the sewing machine is switched off and the plug has been pulled out of the socket to prevent accidents caused by unintentional switching on.

a) Clean the gripper area

Important!

Never disassemble the mechanical elements in the gripper area! Extensive experience with mechanical devices is required in order to reassemble these.

Only Customer Service has the special equipment necessary for disassembling the gripper mechanisms. If you carry out repair work yourself, the warranty will automatically be voided. It should be enough for the user just to clean this area with a brush or vacuum cleaner.


• Then open the gripper cover “

• and take out the bobbin case l .

• Now remove all dirt with a brush or vacuum cleaner (with fine brush attachment).

b) Clean the feeder

• Remove the needle and

• Take the needle retainer in Chapter 9.

; off, as described

• Loosen the screws inserted in the stitch plate 2!

and dismantle the stitch plate.

Now remove the front cover q , if necessary, to better reach the screws. You can now clean the feeder .



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”

Lervia KH 4000 c) Clean the casing

Danger!:

Never open any parts of the machine casing other than those described in this manual.

There are no operating elements inside.

Otherwise there is a risk of injury and potentially life-threatening accidents .

• Clean all plastic surfaces with a soft, dry- cloth.

• Do not use cleansers or abrasive materials – the casing could be scratched.

• The parts of the appliance may never be submerged in water or other liquids! This could damage the appliance.

d) Oil the gripper track

Important!

Apply the oil very sparingly. Excessive oil on the working parts can soil the thread and your fabrics.

• Drip 2-3 drops of oil into the narrow gap ” between the gripper and the gripper track ...

• and turn the handwheel s a few times to rotate the gripper completely. This will distribute the oil.

Just a little oil applied in this way, once or twice per year, is sufficient. The main purpose is to prevent rust from forming if the machine is left unused for long periods.

e) What else needs oiling?

Nothing - no other working parts require lubrication. You should not lubricate anything unless it is necessary, as oiled parts attract dust and may then become stuck.



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Lervia KH 4000 f) Storing

Keep the sewing machine ...

at a dry location so that no rust forms on the metal mechanical parts,

always under the supplied covers to prevent dust from entering the sewing machine,

outside the reach of small children or elderly persons, so that they cannot endanger themselves through unsupervised operation.

13. Troubleshooting

If something is not working, you can use the table below to try and correct the fault. If you are unable to remedy the problem yourself, please contact the customer service department

(see warranty card).

Warning:

Make sure that the sewing machine is switched off and the plug has been pulled out of the socket to prevent accidents caused by unintentional switching on.

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Fault / Problem: Check: Possible remedy:

Machine is not sewing - is only the handwheel turning?

Stitch length wheel set to "0"?

Press in the hadnwheel!

Material is not being moved through

Set it at a value from "1“ to "4".

Is the contact pressure of the sewing foot too low?

Increase the contact pressure of the sewing foot!

Needle is breaking

Needle set incorrectly?

Set flat end towards the rear!

Needle is bent?

Insert a new needle.

Do the needle + thread + material comply with the table in Chapter 10?

Select the right needle for the thread and the material!

Upper thread is breaking

Was it threaded correctly?

Zigzag setting too wide?

Upper thread tension too firm?

Scoring / scratches on the gripper?

It's best to re-thread from the beginning!

Try with a smaller width!

Select the middle setting.

Replace the gripper.

Lower thread is breaking

Ripples in the material

Lower thread tension too taut?

Needle set incorrectly?

Reduce the thread tension.

Set flat end towards the rear!

Was it threaded correctly?

Dust and fluff in the gripper?

It's best to re-thread from the beginning!

Clean the gripper area

Too much tension?

Reduce the tension!

Contact pressure sewing foot too high?

Reduce the contact pressure!

Do the needle + thread + material comply with the table in Chapter 10?

Select the right needle for the thread and the material!



IB_SewingMachine_UK 12.06.2006 14:52 Uhr Seite 31 q

2%

Lervia KH 4000

The bulb no longer lights?

If the bulb is burned out, replace it with an identical one purchsed from a specialised dealer.

The designation is "15W - E14".

• Use the supplied screwdriver to loosen the screw on the front side of the front cover q .

• Take off the front cover q .

• Unscrew the defective bulb 2% and screw a new one into the socket .

14. Warranty and service

The warranty conditions and the service address can be found on the warranty slip.

15. Disposal

Do not dispose of the device in normal domestic waste.

Dispose of the device over a registered waste disposal firm or through your communal waste disposal facility. Observe the currently valid regulations. In case of doubt, consult your waste disposal facility.

Keep the sewing machine's transport packaging.

It may be useful for storing the machine, but is particularly useful if you want to ship the sewing machine for repair. Most instances of damage occur when the machines are being transported.



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Lervia KH 4000



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ID Nr.: KH4000-05/05-V4

Kompernaß GmbH

Burgstrasse 21 · D-44867 Bochum www.kompernass.com

Lervia KH 4000 Owner Manual

Lervia Automatic Free-Arm Sewing Machine

Operating instructions

Lervia Automatic Free-Arm Sewing

Machine

1. Intended Use

2. Technical data

3. Package contents

4. Operating elements

5.

Safety instructions

6. Setting up

7. Switching On / Off

8. Threading

9. Attaching accessories

10. Settings

11. Sewing

K H

N O P Q

12. Care

13. Troubleshooting

14. Warranty and service

15. Disposal

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