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1 Feed Dog NAMES OF PARTS Face Cover Needle Clamp Screw Automatic Stitch Length Indicator Stitch Length Dial Tacking Button Reverse Button Speed Control Buttons Pattern Selection Buttons Drop Feed Lever Lower Thread Pick-up Button (7 Snap-on Presser Foot Thread Guide Upper Thread Tension 2 Take-up Lever (I Top Thread Guide
2 1L [1Ei 4 I. Fc Extension Table Foot Pressure Lever ( Presser Foot Lifter Socket O Declutch Hand Wheel K Power and Light Switch Thread Guide to Wind Bobbin Thread Cutter @ Spool Pin (Retractable> F H
Connecting Foot Controller 4 Stitch Length Dial 13 Buttonhole Sewing 19 Attaching Elastic 30 Removing the Bobbin Case 7 Inserting the Bobbin Case 7 Material, Thread and Needle Table 5 For Flat Bed Use 4 For Free Arm Use 4 Unpacking the Machine 4 Winding the Lower Thread 6 BEFORE SEWING ACCESSORIES 3 Drawing up the Lower Thread 9 (Lower Thread Pick-up Button) 10 Tacking Button 11 Overlocking 24 Zipper Sewing (in lapped seam) 28 Mending 29 Double Presser Foot Lifter 16 Tacking 26 27 Edge to Edge Sewing 25 Reverse Sewing 14 Adjusting Thread Tension 15 Adjusting Bobbin Thread Tension 15 Foot Pressure 16 Lapped Seam Sewing 25 Stretch Seams 18 Straight Sewing 13 STRAIGHT STITCH AND BASICS Drop Feed Lever 16 If Lights Flash 12 Selecting Pattern 10 Sewing Speed 11 Thread Cutter 14 Sewing on Buttons 21 Overcasting 23 Blind Hemming 22 NAMES OF PARTS 1 2 PRACTICAL SEWING CONTENTS Threading the Lower Thread 7 Threading the Upper Thread 8 Changing Presser Foot 17 Changing Needle 17 Corded Buttonhole 20
Applique 33 Embroidering 33 Cleaning 34 Serial No. Model No. 4000 Retain these numbers for future reference. No. of this appliance. WHITE SEWING MACHINE YOUR MACHINE IS FULLY INSULATED AND DOES NOT REQUIRE ANY SPECIAL GROUNDING. Oiling 34 MAINTENANCE Shell Stitching 32 Quilting 31 PROBLEMS AND WHAT TO DO 36 37 Smocking 30 Changing Bulb 35 Record in space provided below the Serial No. and Model The Serial No. is located Bottom of base plate. The Model No. is located Rear of arm. DECORATIVE TOUCHES
ULI BaLl No.14 (2) No.16 (1) No.11 (2) E; Zigzag Foot table. box in the bottom of the extension Store accessories in the accessory ACCESSORIES POIKT WEEDUS SIZE BOld 3 Oil (to remove needle plate) Cleaning Brush Buttonhole Cutter Screw-drivers (large and small) Darning Foot Overcasting Foot Zipper Foot Buttonhole Foot Spacing Guide Needles: No. 9 (1) Spool Pin Felt Button Sewing Foot Ball Point Needles: No.14 (2) Bobbins (3) Needle Plate Screw-driver Bulb Special Foot Blind Hem Foot
Pull out the extension table in the Pull down the fold-down cover. 4 The free arm is very handy when Turn on the switch above the socket. Plug in, in the order shown, J. and Connecting Foot Controller it up and sliding it off. For Free Arm Use For Flat Bed Use Put your machine on the table, un latch and remove the carrying case cover. direction of the arrow. Detach the extension table by lifting sewing trousers, sleeves cuffs, etc. Unpacking the Machine (. BEFORE SEWING
5 smoother [LEATHER] to Hea Silk Medium LIGHT-WEIGHT; Crepe. Wool, [KNITS] Terrycloth Awning Brocade, Velvet 3j 50 Silk 75 80 11 Net Silk, Nylon Cotton Cotton European Mercerized Covered European U.S.Size Point Polyester, 705 I 15x1 Style MATERIAL Cotton F REMARKS THREAD J NEEDLE Material, Thread and Needle Table MACHINE EMBROIDERY Size 50 70 65 80 9 11 TOP STITCHING Silk twist 100 110 16 18 Regular [DECORATIVE TOUCHES] L I HEAVY LEATHER 30 ea Duty] C.C.Poly. 100 110 16 18 feeding. LIGHT-TO-MEDIUM-WEIGHT 30 50 CC.Poly. 90 100 14 16 materials for foot and the ween the presser VINYLS FILMS 30 50 C.C.PoIy. 90 14 Wedge Lay a paper bet FAKE-FURS, VELOURS Sharp 30 HeavyDuty C.C.Poly. 90 100 14 16 Ballor Power Net C.C.Poly. Ball HEAVY-WEIGHT; Double knit. 30 50 Nylon 8090 11 14 Knit. Power Net C.C.Poly. Ball MEDIUM-WEIGHT; Jersey. Double 3(3 50 Nylon 70 80 9 10 to Medium Silk Light LIGHT-WEIGHT; Tricot 50 70 60 Nylon 70 Silk Light of preer foot Ball to 1. Reduce pressure 30 Heavy Duty CC.Poly. 120 19 EXTRA HEAVY; Upholstery. Canvas, HEAVY; Denim. Duck, Sailcloth 30 Heavy Duty CC. Poly. 100 16 vetten. Pique, Faille, MEDIUM; Wool, Silk. Linen, Vel 3(3 50 Silk 80 90 11 14 Organdy, Taffeta 50 70 60 Nylon 65 70 9 SHEER; Blouse Crepe, Lawn, Silk two points VERY SHEER; Lace, Voile, Chiffon, Silk Loosen upper 70 60 Nylon 65 70 9 Regular tension one or
Winding the Lower Thread (1) Switch on. (2> Push in the hand wheel and put the bobbin onto the spindle. * If you switch on the machine with the hand wheel in, three lights; V (red), 7 (green> and (green), may flash. Please switch off and pull out the hand wheel. Then start again in the order (1) and (2>. 0 (3) Pull out the spool pin on the top of the machine and place a spool of thread on it. (4) Lead the thread from the spool pin through the thread guide to the bobbin. When you guide the thread to the guide groove A, make sure to push the thread well into the guide spring e, by holding the thread with the tip of your finger. (5) Wind the thread around the bob bin, counter-clockwise, several times. (6) Press the foot controller to wind the bobbin, checking carefully the amount of thread wound. Stop pressing the foot controller when the thread reaches the outer circle on the bobbin. * There are three choices of speed to wind thread (see p.11). * You can not use the tacking button for winding the lower thread. U I correct T 0.1 0.2cm (3/8 3/4 ) incorrect PULL OUT THE HAND WHEEL WHEN BOBBIN WINDING IS COMPLETED. 6
7 is Threading the Lower Thread position by pushing the lower (1) Raise the needle to its highest Removing the Bobbin Case with your thumb and index finger. ing the latch of the bobbin case rotary hook until it fits well, hold (2) Push the bobbin case onto the raised above the needle plate. (1) Make sure that the needle Inserting the Bobbin Case (4 ) long from the bobbin. (2) Leave a thread end about 10cm thread guide 0 spring, then through the coiled and underneath the tension (1) Lead the thread through the slit hinged latch A of the bobbin case. out the bobbin case, holding the (3) Remove the bobbin with factorywound thread. (2) Open the shuttle cover and take thread pick-up button.
Threading the Upper Thread (1) Lift the presser foot lifter. (2) Lead the thread from the spool pin and hook it at the guide 1. (3) Draw the thread to the front between the two tension discs, then to the guide 2, where the thread should be led to the left. (4) Make sure the take-up lever 3 is in its highest position by turning the hand wheel towards you. Thread the take-up lever 3 by leading the thread from right to left. (5) Thread through the guide A in front, from left to right. (6) Thread the needle from front to back, leaving a thread end about l5cm(6 ) long. 8
9 1r -H thread by hand. button as far as it will go. l5cm(6 ). foot and leave them behind th foot. (4) Pull out both thread ends abou lower thread will come out. (1) Gently pull the end of the upper (2) Push the lower thread pick-up (3) Pull the upper thread and the (5) Bring both thread ends under th Drawing up the Lower Thread
the position you have chosen. How to set for automatic stitches (red) * Make sure the red pattern selection light on the right is lit. (1) Push the button for the pattern The light will move and stop at that you are going to use. buttonholing (automatic two-step) pattern selec tion light right.. automatic stitches left... super stitches Selecting Pattern See p.14. When you push the lower thread the highest position, or pick up the that you wish to use. change to green on the left. the red light. stitch length dial to the place you (2) Adjust the orange indicator on the wish, within the limits shown by How to set for super stretch stitches (green) (1) Turn the stitch length dial to the left until the two green marks meet. The pattern selection light will (2) Push the button for the pattern Lower thread pick-up button pick-up button, the needle will be in lower thread. Reverse button YOU CANNOT CHANGE TO A DIF FERENT PATTERN WHILE RUNNING THE MACHINE. Buttonhole sewing See p.17. 10
11 * red light. light Tacking Button speed control button light is automatically set at low speed. * * When you switch on, the machine You can not change to a different controller. For subtle adjustment, you can adjust slow medium fast speed, slow, medium and fast. the amount of pressure on the foot speed while running the machine. There are three choices of sewing Sewing Speed (How to tack, see p.24.) indicate low-speed sewing. button will automatically change to stitch pattern, the light of the tacking machine for a different automatic After tacking, when you set the dial within the limits shown by the Bring the orange indicator on the Q(green) lights will go on and off. super stretch stitches, v (green) and * If the stitch length dial is set for makes one length of sewing. (2) One step on the foot controller for straight sewing. machine is now automatically set (1) Push the tacking button. The a suitable speed. the machine is automatically set at * When set for buttonhole sewing,
If Lights Flash When you make a mis-operation, electronics will warn you by flashing lights. Probable Cause Correction Button for buttonhole sewing (or Select another button than tacking) is on; at the same time, buttonhole sewing (or tack stitch length dial is turned to the ing), or change stitch length left so that the two green marks dial to automatic stitches. meet. c cd c cd cd 0 Two lights ( v green and Qgreen) go on and off. Power switch turned on when the Turn off power switch, pull \,,, hand wheel is pushed in. out hand wheel and switch c on cd cd cd D D c cd.0 Three lights ( v red, v green 0 green) go on and off. 12
13 orange limits shown by the red light. 4. For large stitches, turn the dial towards Set the orange indicator within the Stitch Length Dial * When you switch on, the machine Foot... Zigzag foot Straight Sewing STRAIGHT STITCH AND BASICS button. can not change setting of pattern nor speed even if you touch the sew fast at the beginning. * When machine is running, you Never pull the material, nor try to Gradually press the foot controller. Lower the needle and presser foot. (2) Place your left hand as shown. ser foot. (1) Place the material under the pres until the two green marks meet. turn the stitch length dial to the left * When sewing super stretch stitches, For short stitches, turn it towards 0. at low speed. is set automatically for straight sewing
Thread Cutter Reverse button about 1.3cm(1/2 ) in from the about l5cm(6 ) long. Leave the ends of the threads (2> Lower the needle and presser foot. edge. (1) Place the material under the foot fraying. thread cutter. Cut both threads together with the * Never pull the thread too hard as it may cause the needle to bend. by pulling it towards the left. Lift the foot and remove the material the lower thread pick-up button. to its highest position by one push of At the end of sewing, raise the needle The length of a reverse stitch is at most O.2cm(1/16 ). stitches will then be in reverse. (3) Push the reverse button, the is to prevent the thread end from Reverse sewing at the end of stitching Reverse Sewing 14 I I
11= Adjusting Thread Tension The suitable upper tension is between 3 6 for sewing with ordinary thread and materials. If the upper tension is too tight, turn the thread tension dial downward in the direction of the arrow. If the upper tension is too loose, turn the thread tension dial upward in the direction of the arrow. 2Z NEVER FORCIBLY TURN THE TEN SION DIAL EITHER OVER 9 OR UNDER 0. tighten Adjusting Bobbin Thread Ten sion Bobbin tension is already controlled, but if it needs to be adjusted, this can be done with the small screw driver. loosen 15
embroidering etc., by pressing down the drop feed button. feeding for normal sewing..u& Press the button up to engage a Lower the feed dog for darning, will go, to give a wider space. presser foot lifter firmly, as far as it For very thick material, push up the Double Presser Foot Lifter 0... for darning; etc. 1...for very elastic materials, inside the face cover. 2...for normal sewing thick fabrics, etc. Adjust foot pressure with the lever Foot Pressure Drop Feed Lever 16 pwj F
I that the presser foot will come off. (1) Pull the lever towards you so Changing Presser Foot I 0 o.czc!:e::: t tighten 17 rough, dirty, or damaged in any way. Do not use needles that are blunt, check if it is straight. Place the needle on a flat surface to (3) Tighten the screw firmly. go. away from you, as far as it will (2) Insert the new needle, flat side Loosen the screw and take out button to bring the needle to its highest position. the needle. (1) Push the lower thread pick-up Changing Needle pull the lever towards you. * If the shank does not fit well, that the shank fits over the bar. (3) Lower the presser foot lifter so presser foot under the shank. (2) Centre the bar of the new
18 C. When stitching light-weight or slippery smoother feeding. Paper may be laid under knits for A ball-point nçedle is essential. Foot Zigzag foot Foot.. foot II III Ill III lii Ill III III III III the thread ends, until a few stitches fabrics, start sewing slowly, pulling have been made. Stretch Seams TB multiple zigzag stitch. Use a lapped or abutted seam with spandex (power net) Very elastic fabrics.... Zigzag Apply small zigzag, (. Light-weight fabrics Apply elastic triple stitch, r Medium-weight fabrics... double knit, jersey elastic mateiials. * RedUce the foot pressure for very PRACTICAL SEWING II T
shown. and v (green) lights will go on and done. off, and buttonhole sewing cannot be if the stitch length dial is set so that Set the stitch length dial properly as the two green marks meet, 0 (green) ZLZ Z 19 stitching. thin paper under the material. fabrics, it is recommended to insert * When sewing buttonholes on stretch the mark. Sew until you reach the mark on the fabric. the upper thread tension. * For a neater finish, slightly loosen Start sewing. the first bar-tacking to left side It will proceed automatically from (2) Push the buttonhole button to set Place the material under the foot, rial as shown. Mark the guide lines on the mate ness and add O.3cm(1/8 ) for bar tacks. matching the centre line (ö with projections and Push back the sliding base as far as it will go. (1) Measure the button and its thick The (]mark will light up. Push the buttonhole button. Push the button again. The El mark should now light up. Foot... Buttonhole foot Buttonhole Sewing
20 pushing the cutter forwards. Sew until you reach the mark on the material. the buttonhole sewing. same way as for an ordinary buttonhole. the thread and cut them. To reinforce buttonholes, a corded Holding both ends, sew in the hole foot, and bring to the slit e knits. to the projection on the button Corded Buttonhole (5) Push the straight stitch button side stitching. Cutting buttonhole Stick a needle through the bar-tacks to prevent over-cutting. and sew 5 6 stitches to complete Cut the buttonhole in the middle by the second bar-tacking to right buttonhole is useful, especially for (4) It will proceed automatically from (1) Hook a piece of crochet cotton (2) After finishing, pull both ends of 1L2 (3) Push the button to set the [1 mark.
21 (2) Turn the hand wheel until the (4) Draw the thread ends through tc Lower the foot. Turn the hand wheel by hand left hole of the button. until the needle comes to the foot. (1) Position the button under the using three kinds of width. You can sew almost all sizes of button three different kinds. the machine at medium speed. (3) Sew about 10 stitches, running change the zigzag width. bring the needle up enough, and If the needle did not go through, needle comes to the right hole. Choose a suitable zigzag width from Foot... Button sewing foot the wrong side and tie a knot. Sewing on Buttons
22 I fabrics pierce only one or two threads of Remove the tacking. Make sure the widest stitches small screw on the right side of fold against the guide. (2) Adjust the hem-width correspond (3) Sew carefully, guiding the soft ing to the pattern by turning the For sheer fabrics For medium & light-weight * For elastic blind hemming, use the Foot... Blind hem toot the cloth guide. pattern.,. (1> Fold the material as shown, handtack the hem. the soft fold. Blind Hemming
23 weight materials materials C Overcasting Overcasting for light of the foot. of the fabric along the cloth guide ( Sew carefully, guiding the right edge edge from fraying. zag stitch is effective to prevent t tricot, overcasting with multiple zi For stretch fabrics such as jersey ar Foot. Zigzag foot neat finish. fabric from fraying and produces a Overcasting prevents the edge of the Overcasting for elastic materials for elastic (medium, smald Zigzag foot Foot... (big) Overcasting foot Overcasting
or overcasting foot Foot. Zigzag foot finish them in one operation. These stitches sew stretch seams and This machine has two types of overlocking stitch. (Be careful not to cut the thread.) away from the stitch. (3) Cut off the margin O.lcm(1/24 ) in from the hem. (2) Sew the edge, about O.5cm(1/4 ) edges together. (1) Place the pieces of material with Neat way Foot. Zigzag foot Overlocking 24
25 I I I I ::::::::.:.::::_::::::::.: A ---- edges as shown A. tion garments which require strong For easy-to-fray materials, fold the This seam is useful for ladies founda stitch. Sew over the lapped part with rick rack and elastic seams. Foot. Zigzag foot Lapped Seam Sewing in the centre of the foot. Sew carefully, keeping the line whe the pieces of material come togeth wear, etc. elastic fabrics for underwear, kni It is also used to mend seams the edges of abutted materials. Edge to Edge Sewing Foot. Zigzag foot Double action stitch is used to joi as shown. For non-fray materials, fold the edgee seams in one operation. Use rick rack stitch to make lapped
26 (6) Tighten the screw onto the holder. screw (1) Lift the presser foot lifter. straight sewing. Foot... Push the tacking button. foot The machine is automatically set for How to set darning foot Darning Tacking SCREW. BEHIND THE NEEDLE CLAMP THE FOOT LEVER SHOULD BE hand wheel towards you. (5) Lower the needle by turning the with the hole of the needle plate. (4) Align the hole of the darning foot screw-driver. by loosening the screw with a (3) Remove the toot and the holder SWITCH OFF. * The needle can also be raised its highest position. by turning the hand wheel. button, so that the needle is in (2> Push the lower thread pick-up
27 thread. through the hole of the foot in the direction the material is --Gathering- spatula, roulette or chalk. stitches. U in the direction of the arrow, moving. material and two thread ends and press the foot controller again. How to use tacking stitch --Tacking-- Tack adjusting the stitch length as thick wool, lace and shaggy material nately. required. (2) Leave the end of the upper thread makes one length of sewing. --Thread marking-- for which you can not use a tracing (1) One step on the foot controller (3) When the needle stops, pull the How to sew Use soft thread such as tacking Use this method for materials such as that the material is gathered. Tack, and pull the lower thread S two pieces of material. Cut the long loops between the Cut the thread, also between the (3) Remove the paper pattern. short, about O.3cm(1/8 ), alter stitch of about 3cm(1 ) and one (2) Sew along the line with one long Pin and cut the materials. pattern on them. right sides facing, and the paper (1) Place the pieces of material with are skipped. * Use a ball-point needle if stitches
material. be easily done without turning the the sliding adjuster, zipper sewing can By using the special zipper foot with 28 Remove the tacking stitches. Tighten the screw and sew on. into position (. foot so that the needle comes (5) Loosen the screw A and slide the right side. Turn the upper material to the edge of the foot. into position. Tighten the screw. so that the left side teeth of the zipper are parallel with the right (4> Sew carefully, guiding the material foot so that the needle comes (3) Loosen the screw :A and slide the right side of the zipper and tack along seam line of the opening. out the lower material O.3cm(1/8 ). Place the folded edge over the over it. (1) With right sides together, tack (2) Open the tacked seam and pull Foot...Zipper foot Zipper Sewing (in lapped seam) 0.3cm (1/8 >
29 ( ) ( :: :::: :: : :vv v : worn part close to the seam. Sew along the edge of the patch neath to reinforce the mending. A piece of gauze can be placed under Guiding the material, sew on either side. on the right side. Trim away the Sew the middle of the tear first. Mending a rip. Place the patch over the worn part. Foot pressure... 1 2 as shown. Foot pressure...0 back and forth by hand. Sew over the hole, sliding the materia To attach darning foot, see p.26. B Using darning foot; A Using special foot; Darning Turn the material 90 and sew agair Foot.. Zigzag foot Patching Mending I I I I I V 1 I V I V a,,i I III I I I I I I I I I I I
Foot pressure...1 2 Set the machine for straight stitching Sew with very loose upper tension. thread. Set the machine as shown above and gathered part. work smocking stitch over the Gather the fabric towards the knot. Make a knot in one end of the lower and length 4. Pre-gather the material by machine blouses, pillow cases, etc. Smocking is attractive on children s Foot.. Zigzag foot Smocking DECORATIVE TOUCHES elastic with smocking stitch. For more decorative sewing, sew the the elastic evenly. (2) Sew along the centre, pulling and stretch it at both ends. (1) Place the elastic on the material 30 Foot...Zigzag foot Attaching Elastic
31 it along the previous...aaa... - ced (2) Attach the spacing guide and stitch (1) Draw the first line on the padding No need to mark lines in advance. The spacing guide is very handy for sewing parallel lines on padded fabric. and sew. Spacing guide I Foot.Zzag foot
32 ooj organdy are suitable. sideways. Sheer fabrics such as silk, nylon the presser foot. tension slightly. For a neat finish, tighten the lower Foot.. foot.zigzag edge of the fold when it moves Stitch slowly, guiding the material. (2> Place the fold to the left under * Make sure the needle misses the * The spacing guide can be attached. (1) Fold the material and tack it. Shell Stitching (1 fl
33 It is not possible to change the widtl Foot... Remove the foot, the holder three different widths. * You can choose a zigzag stitch frorr the needle in at the outer edge. the hoop by hand. type thread, and loose upper tension. For a neater finish, use a fine, silky and screw. design with satin stitch, guiding Put the presser foot down. lift the presser foot and turn the (2) For sewing at the corners, put (3) Sew a few stitches at the end to prevent fraying. (3) Lower the presser foot lifter and sew along the outline of the (1) Draw the desired design on the (2) Stretch the material on the em (1) Tack the applique piece onto the effect in applique work. * stitch gives you an attractive Foot. Zigzag foot material first, and start sewing. material. with straight stitches, length O, Use an embroidery hoop (available). material with a pencil or tailor s broidery hoop as firmly and evenly as possible. Applique Embroidering chalk. while the machine is running.
MAINTENANCE Your new machine cleaning and oiling performance. requires regular for satisfactory Cleaning Detach the needle plate with the specially designed screw-driver and brush off the lint and dust around the feed dog and hook. Oiling (1) Apply a few drops of oil to the rotary hook. TOO MUCH OIL MAY STAIN YOUR MATERIAL. (2) Open the face cover and apply a few drops of oil to the parts indicated by arrows. 34
Changing Bulb CONTROLLER PLUG IS OUT. NEVER OPEN BROWN COLOURED BACK COVER. 35 Install a new bulb and plug in. clockwise). Open the face cover, and remove the ALWAYS MAKE SURE THAT THE When changing the bulb, oil to reach every part. for about one minute to allow the points shown by the arrows. bulb by unscrewing it (counter (3) Apply oil also to the lubricating (4) After oiling, run the machine fast
Fluff stuck in the rotary hook and 36 Although, if you still need help, call your nearest dealer. not run Thread stuck in the hook groove P.34 Upper thread tension too tight P.15 Machine does Not plugged in properly P. 4 bobbin, hand tacking button is on and hand buttons. wheel does not wheel is pushed in. Needle bent or blunt P.17 work Running slowly Needle and thread not matching P. 5 lower position. highest position. Breaking lower Thread not wound evenly on the Needle plate has a crack Change needle plate or inside the tension spring with a cleaning brush Fluff stuck in the bobbin case and Remove lint and fluff Fluff stuck in the feed dog P.34 the hook groove P.34 Making noise Lack of oil P.34 When winding Foot controller is stepped in, while Change to speed control thread Wrong needle setting P.17 Starting with take-up lever in Always start with lever in thread bobbin or not drawn up correctly Trouble Probable Cause Correction Examine if your operation corresponds correctly with the procedures in this manual. Breaking upper Incorrect threading P. 8 Poor quality or knotted upper thread Use good quality thread rub with sandpaper Lower thread tension too tight P.15 In most cases the problems will be caused by incorrect operation of the machine. P 6 P 9 PROBLEMS AND WHAT TO DO
Breaking needle Needle not correctly inserted P.17 Needle bent P.17 Needle clamp screw too loose P.17 Upper thread tension too tight P.15 Thread too thick P. 5 Incorrect threading of upper or Stitch too long for material P.13 puckers too tight Incorrect upper threading P. 8 Needle too fine for the material P. 5 Skipping stitches Needle not fully inserted P.17 Needle bent P.17 Size or type of needle and thread not suitable for the material P 5 Too much oil on the hook P.34 The material Upper or lower thread tension P 15 lower P 7 P 8. thread Irregular stitches Incorrect size of needle for the material P 5 Upper thread tension too loose P.15 The material not Incorrect presser foot pressure P.16 fed correctly Incorrect feed dog height P.16 Fluff stuck on the feed dog P.34 Light bulb Not plugged in P. 4 Bulb is loose P.35 Bulb is burnt out P.35 37 does not work Switch is off P. 4 Incorrect lower tension P.15 Trouble Probable Cause Correction