White 1570 manual

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Buen manual de instrucciones

Las leyes obligan al vendedor a entregarle al comprador, junto con el producto, el manual de instrucciones White 1570. La falta del manual o facilitar información incorrecta al consumidor constituyen una base de reclamación por no estar de acuerdo el producto con el contrato. Según la ley, está permitido adjuntar un manual de otra forma que no sea en papel, lo cual últimamente es bastante común y los fabricantes nos facilitan un manual gráfico, su versión electrónica White 1570 o vídeos de instrucciones para usuarios. La condición es que tenga una forma legible y entendible.

¿Qué es un manual de instrucciones?

El nombre proviene de la palabra latina “instructio”, es decir, ordenar. Por lo tanto, en un manual White 1570 se puede encontrar la descripción de las etapas de actuación. El propósito de un manual es enseñar, facilitar el encendido o el uso de un dispositivo o la realización de acciones concretas. Un manual de instrucciones también es una fuente de información acerca de un objeto o un servicio, es una pista.

Desafortunadamente pocos usuarios destinan su tiempo a leer manuales White 1570, sin embargo, un buen manual nos permite, no solo conocer una cantidad de funcionalidades adicionales del dispositivo comprado, sino también evitar la mayoría de fallos.

Entonces, ¿qué debe contener el manual de instrucciones perfecto?

Sobre todo, un manual de instrucciones White 1570 debe contener:
- información acerca de las especificaciones técnicas del dispositivo White 1570
- nombre de fabricante y año de fabricación del dispositivo White 1570
- condiciones de uso, configuración y mantenimiento del dispositivo White 1570
- marcas de seguridad y certificados que confirmen su concordancia con determinadas normativas

¿Por qué no leemos los manuales de instrucciones?

Normalmente es por la falta de tiempo y seguridad acerca de las funcionalidades determinadas de los dispositivos comprados. Desafortunadamente la conexión y el encendido de White 1570 no es suficiente. El manual de instrucciones siempre contiene una serie de indicaciones acerca de determinadas funcionalidades, normas de seguridad, consejos de mantenimiento (incluso qué productos usar), fallos eventuales de White 1570 y maneras de solucionar los problemas que puedan ocurrir durante su uso. Al final, en un manual se pueden encontrar los detalles de servicio técnico White en caso de que las soluciones propuestas no hayan funcionado. Actualmente gozan de éxito manuales de instrucciones en forma de animaciones interesantes o vídeo manuales que llegan al usuario mucho mejor que en forma de un folleto. Este tipo de manual ayuda a que el usuario vea el vídeo entero sin saltarse las especificaciones y las descripciones técnicas complicadas de White 1570, como se suele hacer teniendo una versión en papel.

¿Por qué vale la pena leer los manuales de instrucciones?

Sobre todo es en ellos donde encontraremos las respuestas acerca de la construcción, las posibilidades del dispositivo White 1570, el uso de determinados accesorios y una serie de informaciones que permiten aprovechar completamente sus funciones y comodidades.

Tras una compra exitosa de un equipo o un dispositivo, vale la pena dedicar un momento para familiarizarse con cada parte del manual White 1570. Actualmente se preparan y traducen con dedicación, para que no solo sean comprensibles para los usuarios, sino que también cumplan su función básica de información y ayuda.

Índice de manuales de instrucciones

  • Página 1

    0 m r © E z -I m C) r (1) (I) I-I m[...]

  • Página 2

    TO OUR VALUED CUSTOMER... You are now the owner of a new zig zag sewing machine, the most versatile type of its kind you can possess, Buttonholes, monogramming, overcasting and creative embroidery are done with ease and speed. To aid you in obtaining the greatest performance from your new sewing machine, this book on its care and use has been writt[...]

  • Página 3

    CONTENTS Introduction/Contents Cover page Glossary of sewing machine 1.6 GETTING READY TO SEW Using the foot control 7 To Connect the foot control wires 7 To use the toot pedal 7 Converting to tree-arm sewing 8 Winding the bobbin 9 Threading of top thread 10 Twin needle upper threading 11 Lower threading 12 Inserting bobbin 12 Picking-up lower bobb[...]

  • Página 4

    GLOSSARY OF SEWING MACHINE TERMS ACCESSORY BOX For storage of extra feet, needles, bobbins and accessories. BOBBIN CASE Holds thread in bobbin case and balances TENSION SPRING upper and lower tension threads. BOBBIN TENSION SCREW To adlust the tension of bobbn thread BOBBIN WINDING For winding bobbin with thread. SPINDLE BOBBIN WINDING STOP For aut[...]

  • Página 5

    PORTABLE CASE PRESSER BAR PRESSER FOOT PRESSER FOOT LIFTER PRESSER FOOT THUMB SCREW RACE REVERSE STITCH BUTTON A receptacle to store a sewn 9 machine when not in use. Controls the pressure exerted on various materials being sewn. When lowered onto material it holds the material against the feed dog. For raising the lowering the presser bar and pres[...]

  • Página 6

    GLOSSARY OF SEWING TERMS APPLIQUE Applying a material with a specific design onto another material by using a straight or zigzag stitch. BASTING To sew with a temporary stitch that can be removed with ease. This is possible by using the longest straight stitch, setting your top tension on “0” and sewing a line of stitches. The top stitch will b[...]

  • Página 7

    SATIN STITCH A solid tine of zig zag stitching formed by a zigzag stitch sewn very close together. SEAM A line formed when sewing two pieces of material together. SHELL TUCK The use of the zigzag or variation of the zigzag stitch to give a shell effect to the edge of material. SHIRRING To gather cloth by drawing two or more threads together. STRAIG[...]

  • Página 8

    THIS INSTRUCTION MANUAL IS DESIGNED TO GIVE BASIC INFORMATION, TO UNDERSTAND THE FUNCTIONS OF A SEWING MACHINE, THREAD, AND NEEDLES. For sewing a normal seam, the material must be fed regularly for the formation of each stitch. The feed dog does the conveying, together with the presser bar on which a presser foot has been fastened. Feed Dog The tas[...]

  • Página 9

    A THE TENSION What happens now, if the upper tension is too weak? At the moment the lower thread should he drawn from the bobbin to finish the stitch, its resistance becomes too strong in relation to the upper tension. Thus the upper thread in unwound before the lower thread is drawn into the material. The thread take-up lever no longer meets with [...]

  • Página 10

    USING THE FOOT CONTROL TO CONNECT THE FOOT CONTROL WIRES: Connect special plug to block on machine as shown in diagram above. * Connect outlet plug to electrical outlet. When sewing, keep children’s hands away from toot control and wiring. * After sewing, disconnect plug from electrical outlet. Your sewing machine is equipped with a grounded foot[...]

  • Página 11

    CONVERTING TO FREEARM SEWING (Fig. 1) (Fig. 2) 1. Remove the table from the machine by pulling the base to the left. (Fig. 1,2) 2. To replace the table, simply slide it along the free arm to its original position. (Fig. 1) a —8—[...]

  • Página 12

    WINDING THE BOBBIN 1 Release clutch by turning clutch knob toward you. 2. Draw thread from spool through bobbin winder tension discs as shown. 3. Pull end of thread through hole in bobbin as shown. 4. Place bobbin onto bobbin winder shaft with end of thread coming from the top of the bobbin. push bobbin winder latch against bobbin until it clicks. [...]

  • Página 13

    THREADING OF TOP THREAD Fig 3 1. Place thread on spool pin as shown, with the thread coming from the back of the spool (Fig. 1—a). Draw thread through the top thread guide (Fig 1—b & c). Pass thread through top thread guide (Fig. 1-d) 2. Holding the spool with the right hand, pull the thread through the tension discs. The spring wire loop s[...]

  • Página 14

    Twin Needle Upper Threading U * FoHow threading instruction for single needle with these exceptions. Place thread, matching or contrasting in color, on both spool pins. Draw hreads through the thread guides as normal, but separate the threads at the position. 1 Pass one thread through the left disc and one thread through the right disc. Tension is [...]

  • Página 15

    LOWER THREADING Removing the Bobbin Pick the metal plate upward towards you and remove the bobbin with your finger, as shown, or you may use the opposite end of your button hole cutter to extract the bobbin. INSERTING BOBBIN (1) Insert the bobbin into the shuttle with the thread end in direction of the arrow. Bobbin should rotate clockwise. (2) Gra[...]

  • Página 16

    Picking-Up Lower Bobbin Thread Hold end otupper thread with left hand. Turn handwheel slowly towards you until needle moves down and up again. Pull upper thread slowly and lower thread will be brought up in a loop. Pull out both threads to about 15cm (6”) and place them together under presser foot and to the left. —13—[...]

  • Página 17

    CONTROLS TOP TENSION CONTROL Probably the most important control on your machine is this one that regulates your top thread tension. It consists of discs between which the thread passes. The pressure on these discs is regulated by turning the turning the dial on the front of the control. The higher the number, the tighter the tension. There are man[...]

  • Página 18

    CHECKING TENSIONS The easiest way to check tensions is to sew a medium zigzag stitch on the fabric you will be using. Use the appropriate type of thread and needle. Use different colors of thread on the bobbin and upper spool. Sew a line of zigzag stitches. The bobbin thread should not show on the top of the fabric. Adjust the top tension if necess[...]

  • Página 19

    REVERSE STITCH CONTROL It is best to begin and end seams with a few stitches taken in reverse. This is called back tackinq. Back tacking fastens the end of the seams firmly and preven i’ raveling. When everse stitching is needed, simply press and hold the control down dui ing sewing. The fabric will immediately start feeding backward and seam wil[...]

  • Página 20

    OTHER ADJUSTMENTS OF MACHINE IN SEWING In addition to the obvious controls of your machine there are other small regulators and controls to aid you in using your sewing machine. Push down outer ring of presser foot pressure regulator (See above illustration). This will release pressure of presser foot. To increase pressure, push down inner pin unti[...]

  • Página 21

    Changing The Needle Proper needle straight shaft sharp point Always make sure needle is straight. * To check straightness of needle, lay needle on a flat surface and see that needle is straight and parallel as shown in above diagram. from you. * Turn hand wheel toward you to raise needle bar to its highest position. * Loosen needle clamp screw and [...]

  • Página 22

    Fabric, Thread And Needle Chart NEEDLE (Long Scarf) STITCH FABRIC 1 130/705H THREAD LENGTH — European SETTING ercerized6O DELICATE—tulle, chiffon, node, fine lace, organdy, lawn, crepe, taffeta 3 70 European50—70 1 1/4—1-3,4 KNITS—sheer tricot light ball point A Silk Fine Synthetics LIGHTWEIGHT---batiste, organdy, voile, taffeta, silk. cr[...]

  • Página 23

    Free-Arm Sewing For sewing tubular and hard-to-reach areas, use your machine as a free-arm. Stitching buttonholes or sewing buttons on a cuff or neckband; topstitching a sleeve; edge finishes on sleeves, pantlegs and waistlines; darning and patching kness, elbows; and other areas of wear on children’s clothing become as easy as sewing a common se[...]

  • Página 24

    PATTERN SETTING TWI N NEEDLE —21—[...]

  • Página 25

    PRESS FEET The Various presser feet that come with your Sewing Machine are designed to help you to do every kind of sewing easily and perfectly. THE ALL PURPOSE FOOT This foot is flat on the bottom and has a wide hole to accomodate wide stitches. This foot should be used for all normal sewing. Changing Foot Raise presser foot lifter 1 Set needle in[...]

  • Página 26

    Starting to Sew Now that you are familiar with the controls on your machine and with the accessories provided for the machine, you are ready to start to sew. Below are some good habits to follow each time you sitdown to sew: 1. Test the needle-it should be straight, properly set and sharp on the point. It should be the correct size for the fabric a[...]

  • Página 27

    APPLICATIONS OF THE STRAIGHT STITCH SEAMS The normal stitch length for most fabrics is 3, but the length chosen should depend on the fabric and area of usage. Usually, heavier fabrics require longer stitches, and lighter weight fabrics require shorter stitches. For curved seams and bias cut areas use a shorter stitch length to add strength and elas[...]

  • Página 28

    ELASTIC THREAD SHIRRING Wind elastic thread onto bobbin, as shown, letting the thread pass through your fingers. The thread should be wound smoothly without stretching. Place bobbin in place s usual, being sure that the elastic is drawn through the tension. Use regular thread on the top of the machine. Do a trial run on the chosen fabric to test le[...]

  • Página 29

    * ENDING SEAM/REMOVAL OF FABRIC Stitch to the edge of the fabric, then press the reverse stitch button and backstitch for a few stitches to reinforce the end of the seam. Turn the hand wheel until the take-up lever is in its highest position so that the stitch is completed and the threads will pull freely. Lift the presser foot and remove the fabri[...]

  • Página 30

    SEWING ON BUTTONS Zigzag stitching is a very easy and convenient method of sewing A button without a shank. Place the button so its left hole comes directly under the needle, then gently lower the button sewing foot. Take a stitch in the hole. Raise the needle and move zigzag width dial to the right until the needle comes down exactly over the righ[...]

  • Página 31

    SATIN STITCHING This is useful for decoration such as tapering, manual designed embroidei y, monogramming, and applique. The satin stitch, which is a very close zigzag stitch, is obtained by setting the stitch length as near toO” as possible without stopping the feeding action The setting will vary for different fabrics. It may be desirable to lo[...]

  • Página 32

    Pattern /A/ Length: 0 Width.I 5 Spec ai stitch selector Utility stitch upward Pressure Darn Foot: None FREE HAND MONOGRAMMING For giving garments and linens a personaiized touch, first tiansfe; the design to the right side of the fabric. An embroidery hoop is recommended especially for soft fabrics and toweling. In order to monogram, you must move[...]

  • Página 33

    GATHERING OVER CORD Ordinary gathering with a basting stitch often breaks while pulling in fullness. A small zigzag across a cord such as crochet thread or carpet thread, gives a much stronger cord for gathering fullness into fabrics. Once the gathers have been stitched in place, the cord can be pulled out in order to eliminate bulk. Pattern: AM Le[...]

  • Página 34

    ccç Pattern: Length: Near O-Y Width: 4-5 Special stitch selector Utility stitch upward Pressure: Normal Foot: All Purpose MENDING A TEAR OR INSTANT DARNING The multiple stitch zigzag provides a strong and easy repair for torn garments. It gives an almost invisible mend, especially when a fine darning thread is used. To mend a tear, hold the torn e[...]

  • Página 35

    FLUTTER HEM An unusual way of hemming or finishing edges of tricot or soft knits is by a flutter edge. Hemm ing in this manner is just like overcasting an edge, but the fabric is stretched in back and in front of the needle as you sew. For best results, pull the fabric equally, making sure the needle goes over the edge. When you stop to reposition [...]

  • Página 36

    UNDERSTITCHING FACINGS The multiple stitch zigzag is an excellent choice for undersitching and eliminating bulk in facing seam allowances. After attaching the facing to the garment, trim and clip the seam allowance as usual. Press the seam allowances toward the facing and use the multiple stitch zigzag close to the seam, stitching through the facin[...]

  • Página 37

    APPLICATIONS OF THE BLIND HEM STITCH J’J’ BLIND HEMMING The blind hem stitch provides a durable hem finish that is almost invisible on garments, drapes, and curtains. It is done easily with straight of slightly curved hems. With a little practice it will be a very quick and easy hem application and the hem will never need repairing. Procedure: [...]

  • Página 38

    SHELL TUCK The blind hem stitch gives a very effective and easy way to make a shell tuck for lingerie, pillowcases, and decorative finishes. This works well on knits or on the bias of soft,woven fabrics, A single folded bias tape may be tucked in this manner, and then applied under a fold for a decorative hem on pillow’ cases or applied with the [...]

  • Página 39

    SHELL TUCK The reverse blind stitch gives a very effective and easy way to make a shell tuck for lingerie, pillowcases, and decorative finishes. This works well on knits or on the bias of soft, woven fabrics. A single folded bias tape may be tucked in this manner, and then applied under a fold for a decorative hem on pillow cases or applied with th[...]

  • Página 40

    Twin Needle Upper Threading H ‘Ri Follow threading instruction for single needle with these exceptions. * Place thread, matching or contrasting in color, on both spool pins. Draw threads through thread guides as normal, but separate the threads at the position I. * Pass one thread through the left disc and one thread through the right disc. Tensi[...]

  • Página 41

    Decorative Tucks Or Designs Any stitch can be used with the twin needle for decorative effects. Most attractive are the multiple stitch 7igzag and blind hem stitch for fancy tucks. The satin stitch or tapered zigzag designs in two colors are effective for creative trims. Caution: Remember to use no more than a 2 zigzag width for twin needle sewing.[...]

  • Página 42

    BUTTONHOLES Various fabrics require various methods of sewing buttonholes. Four different methods are given below, with suggested uses. If you are in doubt as to which method is best for your fabric, test the methods in question and choose the best according to the finished appearance. PREPARATION For the best results, a good quality merceriz ed co[...]

  • Página 43

    BUILT-IN BUTTONHOLER This buttonhole eliminates the need for pivoting the fabric. It is used most often on light and medium woven fabrics. 1. Set the buttonhole control dial at the buttonhole picture. Lower the needle into the mark at the top end of the buttonhole. Lower the presser foot. A few stitches will be made for the bartack, turn to j than [...]

  • Página 44

    TURN-AROUND BUTTONHOLES It is possible to make small and dainty but tonholes if you desire or repair damaged but tonholes. This entails a slight shifting of the cloth but with some practice, good buttonholes can be achieved. 1. Mark the length of the buttonhole on the cloth as shown in figure. 2. Set the needle position to the left and your stitch [...]

  • Página 45

    CORDED BUTTONHOLES Cording gives a reinforced raised buttonhole. It is excellent for use on bulky, woven fabric, or knits in which the stitching often gets buried and makes cutting difficult. On knits, a corded buttonhole will help keep the fabric from stretching out shape. Choose a heavy cotton crochet thread or but tonhole twist to use for the co[...]

  • Página 46

    STRETCH BUTTONHOLES This buttonhole is used on knit fabrics when it Step 1 Step 2 is desirable to omit interfacing or cording. — — This buttonhole will stretch and return to shape unlike an ordinary zigzag buttonhole. The pattern of the stitch makes the buttonholes nearly invisible when using mat ching thread. It is excellent to use on jerseys,[...]

  • Página 47

    APPLICATIONS OF THE STRAIGHT TRIPLE STRETCH STITCH Elastic Triple Straight Stitcr Regular Straight Stitch Seams This stitch may be used on knits and woven fabrics, in areas of stress as a reinforcement stitch. It is excellent for curved seams such as armholes and crotch seams. For active wear such as ski pants and girdle fabrics which endure a lot [...]

  • Página 48

    APPLICATION OF THE PICK-RACK //AV/A Topstitching/Rick-Rack A decorative topstitch can be produced with the nc-rack stitch. Stitch around the structural lines of the garment for a special effect, To pstitch braid or a decorative inset to add an additional creative flair. Pattern: ‘// Length: 4 Special stitch selector Stretch stitch upward Foo[...]

  • Página 49

    APPLICATION STRETCH OVER LOCK -/V On fabrics that are bulkier or heavier, the stretch overlock is a better choice than the overlock. In all methods proceed as you would for the dcuble overlock, except feed the fabric with the bulk to the right. The stitch is less dense and will prevent from rippling. soft stretchy knits Pattern: Length: 4 Width: 45[...]

  • Página 50

    APPLICATIONS DOUBLE OVERLOCK STITCH SEAMING DOUBLE OVERLOCK STITCH This stitch gives a finished 1/4 inch seam in one step. For knits, it gives strength and elasticity to the seams and prevents the curling of the fabric that often occurs with 5/8 inch opened seams. It is most applicable to soft, thin knits such as nylon or acetate knits, but may be [...]

  • Página 51

    TOPSTITCHING DOUBLE OVERLOCK The double overlock stitch can be used to topstitch nonraveling fabrics such as felt or leather into place for appliques or pockets. Stitch so that the straight part of the stitch is formed over the edge of the leather, and only the zigzag part holds it in place. Pattern: Nz — — — — — PROCEDURE: Double overlo[...]

  • Página 52

    APPLICATIONS ULTRA STRETCH SEAMING ULTRA STRETCH On most knits, a 1/4 inch finished seam, such as ultra stretch or the double overlock stitch, is more desirable than a 5/8 inch opened seam al lowance. These stitches can create a neater, more professional finish, eliminate bulky seams, prevent curling, permit the garment to “give” under stress, [...]

  • Página 53

    0, 0 I. liii liii g III! z z —[...]

  • Página 54

    KNOWING YOUR SEWING MACHINE 1. Needle plate 2. Feed dogs 3. Presser foot screw 4. Seam guide lines 5. Thread guide 6. Needle clamp screw 7. Face cover thread guide 8. Top thread tension control 9. Front thread guide 10. Thread take-up lever 11. Top thread guide 12. Bear thread guide 13. Stitch selector 14. Stitch width control 15. Special stitch se[...]

  • Página 55

    BACK VIEW 22, Clutch knob 23. Hand wheel 24. Bobbin winder 25. Thread spool pins 26. Presser regulator 27. Face cover plate 28. Presser toot lever 29. Thread cutter 30. Presser toot 31. Light switch 32. Nomenclature plate 24 25 26 / 23 -.- 31 22 27 3/ —52--[...]

  • Página 56

    The all purpose foot This foot is flat on the bottom and has a wide a wide hole to accommodate wide stitches. This foot should be used for all normal sewing. The button sewing foot This foot has a piece of plastic inserted on the bottom to hold buttons securely. The buttonhole foot This foot has a frame which holds the fabric taut enough to produce[...]

  • Página 57

    buttonhole Foot This foot has a frame which holds the fabric taut enough Buttonhole foot produce a good buttonhole. The markings on the side Iow exact buttonhole length to be made. Bar tacking: Set pattern selection dial to and sew 5-6 stitches. Left side: Change pattern to Sew left side from front to back until it reaches end line. Remember the po[...]

  • Página 58

    Button Sewing Foot Abb. B THE BUTTON SEWING FOOT This foot has a piece of plastic inserted on the bot torn to hold buttons securely. Position a button and material under foot. When needle comes to left side of stitch, lower foot. Raise needle and adjust zigzag width so that needle comes to right hole of button. Run machine at medium speed and sew 5[...]

  • Página 59

    Cloth Guide Use cloth guide when sewing a long seam of regular Cloth guide distance from edge of material. — Set guide in hole on arm, at right of needle plate, and adjust distance. Run machine with edge of fabric touching guide. Position cloth guide at an angle to sew a curved seam. JL Sew reverse stitches for reinforcement at end of seam. Draw [...]

  • Página 60

    Zipper Sewing Foot Zipper Foot Set machine as shown. By using special zipper foot with sliding adjuster, zipper sewing can be easily done without turning fabric. Sew right side of zipper guiding fabric carefully so that right side teeth of zipper are parallel with left edge of foot. Re-set foot so that needle comes into position c Sew left side of [...]

  • Página 61

    The Quilting Guide Parallel straight lines are easy to sew with the quilting guide. To attach the guide, loosen thumb screw and slip the U-shaped holder of the guide between presser foot and thumb screw. Tighten the thumb screw securely. Adjust the curved bar to the desired distance from the needle. Sew the first line of stitching as desired, then,[...]

  • Página 62

    MAt NTENANCE Your new macnine requires regular cleaning and oiling for satisfactory performance. A machine which is used for a few hours a day needs to be cleaned and oiled once a month. Unplug machine before cleaning or oiling. C and wipe with a / 1 2N<j<A A. Disassemb’ing Shuttle (for cleaning) Turn hand wheel toward you to raise needle t[...]

  • Página 63

    C. Oiling Apply a few drops of oil around face D of hook and to center hole E after oiling, wipe with a piece of cloth. D. Assembling Shuttle Reverse procedure used for disassembling shuttle. E. Changing Light Bulb Unplug machine. plate. Unscrew wise to remove it. Plug in machine. Open face cover bulb counterclock Install new bulb. —60—[...]

  • Página 64

    TAKE OUT TANGLED THREAD IN BOBBIN CASE 1 Remove bobbin cover plate A Insert the cleaning brush end bobbin B and lift it up. 2. Cut tangled upper thread C with Buttonhole Cutter. 3 Take out bobbin from bobbin case D and cut lower thread with Buttonhole Cutter. 4 Take otf pieces of waste threads on bobbin case. into —61--[...]

  • Página 65

    TROUBLE CHART Trouble Probable Cause Correct Operation Machine does Not plugged in properly. See Page 7-9-12-59 not sew Power supply switch is not on. Thread is stuck in the hook groove. Bobbin winder Spindle is pushed to the right. Making noise Lack of oil. See Page 12-59 Running slowly Lint or thread stuck in rotary hook. Lint stuck in feed dog. [...]

  • Página 66

    Improper upper threading. See Page 9-10-15 Not using a ball point needle for elastic and thin fabric. Improper tension. Sewing foot not suitable for the work. Stitches not Upper thread tension too loose. See Page 10 locked Improper tension of lower thread. Improper needle for thread. Wrinkled Upper or lower thread tension too - See Paqe i fabrics t[...]