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Pfaff hobbylock 4752 manual

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Table of contents for the manual

  • Page 1

    hobbylock 4752 Instruction Manual[...]

  • Page 2

    P arts of the hobbylock 4752 Right needle thread tension (green) T elescoping thread guide Thread guides Thread spool pin Cone thread adapter Thread spool stand Setting knob for stitch length Foot contr ol plug with power cord Foot contr ol plug with power cord Electrical power master switch Handwheel Setting screw f or presser foot pressur e Left [...]

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    [...]

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    2[...]

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    3 Simple, up-to-date sewing Congratulations! Y ou have bought a high-quality product that provides unique advantages. Y our new hobbylock 4752 can take any material in its stride and will sew through thick and thin for you. Y our PF AFF hobbylock features the very latest in de- sign and technology , and it is just as simple to ope- rate as this ins[...]

  • Page 6

    4 Contents Page Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Accessories, optional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Accessory box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Changing a spool on a threaded machine . . . . . . . [...]

  • Page 7

    5 Seam width, setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Securing the seam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27, 28 Sewing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Sewing light cover . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 8

    6 Attaching the waste container Guide the lug into the groove on the looper cover . Storing the accessory box Place the accessory box in the waste con- tainer . Accessories screw driver tweezers thread nets needle system thread unreeling discs wrench looper threading aid cleaning brush needle threading aid machine oil re- place- ment upper blade lu[...]

  • Page 9

    7 wall socket lead cord/plug connection socket foot control plug foot control main switch main switch Connecting the machine to the mains power supply Switch the main switch to OFF . Plug the foot control plug into the connection socket on the machine. Plug the lead cord/plug into the wall socket. Switch the main switch to ON. Notes on safety This [...]

  • Page 10

    8 Sewing speed The sewing speed is regulated by activating the foot control. The further you press the foot control down, the faster the machine will sew . Direction of rotation of the handwheel Always turn the handwheel towards you, as shown in the illustration (i.e. counterclock- wise). Opening and closing the looper cover Opening: Push the loope[...]

  • Page 11

    9 T elescoping thread guide Pull the telescoping thread guide upward to its highest position. The two upper telescopes must be rotated slowly until their locking balls are heard to lock into place. Attaching the thread unreeling discs and the thread nets Pull the cone thread adapter off the spool pin when using a small spool. Place the spool on the[...]

  • Page 12

    10 left needle thread thread guide plate right needle thread upper looper thread thread guides lower looper thread Threading the machine[...]

  • Page 13

    11 Before the machine leaves the factory , threads are already threaded and their ends are cut off. T ie one of these thread ends to the thread from a spool with an overhand knot, raise the presser foot and pull the new threads through the loopers. In order to thread the needle threads, pull the thread ends through until the knots reach the needle [...]

  • Page 14

    12 Threading the upper looper (red) Open the looper cover and the swivel plate. Place the spool on the second spool pin from the right. The guide points for the up- per looper thread are marked in red. T wo threading diagrams are located behind the looper cover to help you with the threading. Guide the thread from the rear through the second thread[...]

  • Page 15

    13 Guide the thread through from the right bet- ween the tension discs and pull the thread tight from both sides. Feed the thread into the guide (5) for the up- per looper thread. Feed the thread into the guide (6) for the up- per looper thread. Guide the thread into the take-up lever (7) of the upper looper thread. Feed the thread into the guide ([...]

  • Page 16

    14 Guide the thread from the rear through the right thread guide (1). Guide the thread through both the right holes on the thread guide plate (2), as shown in the illustration. Guide the thread from the left to the right into the right guide (3). Threading the lower looper (yellow) Open the looper cover and the swivel plate. Place the spool on the [...]

  • Page 17

    15 T urn the handwheel towards you (counter- clockwise), until the looper is on the extreme right. Feed the looper threading aid through the eye of the guide (10) for the lower looper . Then hook the thread end into the looper threading aid and pull the latter with the thread through the eye of the guide (10). Guide the thread through from the righ[...]

  • Page 18

    Führung des Nadel- fadens Faden- führung der Nadel- stange 16 Guide the thread from the right between the tension discs and pull the thread tight from both sides. Raise the needle(s) to the high-est position by turning the handwheel towards you. Guide the thread into the take- up lever (4). Feed the thread from the right to the left into the left[...]

  • Page 19

    17 cover of the take-up lever (5) guide for the right needle thread (4) thread tension (3) of the right needle thread Raise the needle(s) to the highest position by turning the handwheel towards you. Guide the thread through the guide (4) for the right needle thread and through the take-up lever (5) Guide the thread from the right between the tensi[...]

  • Page 20

    18 Feed the thread from the left to the right into the right guide (6) for the needle thread. Feed the thread from the left to the right into the thread guide (7). Feed the needle threading aid through the needle eye from the rear . Then hook the th- read end into the needle threading aid and pull the needle threading aid with the thread through th[...]

  • Page 21

    19 Setting the seam width Set the seam width as follows: 1. Switch the main switch to OFF and pull out the lead cord/plug. 2. Open the looper cover and the swivel plate. 3. Move the upper blade to its lower position (see Page 24). 4. Adjust the setting knob until the lower blade is in the desired position. (A) The seam width is too small - there ar[...]

  • Page 22

    20 Setting the stitch length T urn the stitch length setting knob in such a way that the desired stitch length is indica- ted at the setting mark. The higher the num- ber , the longer the stitch. The stitch length can be adjusted between 1 and 5 mm. The setting R is used for sewing rolled hems. Setting: – T urn the setting knob counterclockwise ([...]

  • Page 23

    21 Presser foot pressure The presser foot pressure does not need to be adjusted for most fabrics. If you are working with light or heavy fabrics then you may need to adjust the pressure. In this case set the adjusting screw as follow: – for heavyweight fabrics increase pres- sure by turning the adjusting screw to the right – for lightweight fab[...]

  • Page 24

    22 Changing the needle Switch the main switch to OFF . Move the needle(s) to the highest position. Loosen the fastening screw of the needle that is to be changed. Needle system HA X 1SP (130/705 H-PS) is required for this machine. Inserting the right needle Insert the new needle in such a way that the flat side points towards the rear . Push the ne[...]

  • Page 25

    23 Use of the right needle only (for 3-thread seams with a narrow seam width) T urn the machine off. Remove the left needle and the left needle thread. T ighten the left needle fastening screw again slightly so it does not fall out. Use of the left needle only (for 3-thread seams with a wide seam width) T urn the machine off. Remove the right needl[...]

  • Page 26

    24 Disengaging the upper blade T urn the machine off. – Open the looper cover and the swivel plate. – Push the ridged knob for lowering the upper blade to the right and turn it towards you. Guide the upper blade over the blocking pin so that the upper blade engages in its lower position. – Close the looper cover and the swivel plate. Engaging[...]

  • Page 27

    25 Setting the stitch width latch (for standard overlock seams or rolled hems) Switch the main switch to OFF . – Open the looper cover and the swivel plate. – Disengage the upper blade (see Page 24). – Press the stitch width setting knob towards the right and push the bed slide of the stitch width latch to the setting mark S (standard) or R ([...]

  • Page 28

    26 Using the seam guidelines On the top side of the looper cover , you will find seam guidelines which indicate the distance from the needles. These guidelines should help you to properly position your fabric when sewing. Starting sewing Lay the sewing material under the front of the presser foot (it is not necessary to raise the presser foot). T u[...]

  • Page 29

    27 Securing the seam ends Leave a thread chain of approx. 5 cm (2”) in length extending at the beginning and the end of the seam to prevent the seam from coming undone. Secure the thread chain at the beginning and end of the seam using one of the following methods. Separate the individual thread ends and knot them together . Thread the thread cha[...]

  • Page 30

    28 3. Flip the fabric over so the bottom side is now on the top. Pull the fabric around so it is positioned under the presser foot and in front of the needles. Make sure the fabric is not positioned in the path of the upper blade. 5. Lower the presser foot, sew approx. 2.5 cm (1”) over the seam and pull the fabric away to the side at an angle, se[...]

  • Page 31

    29 setting mark to increase to reduce Thread tension Threads and needles chart Fabric Thread Needle Light Medium-heavy heavy Knitwear fabrics fabrics fabrics organdy , cotton, tweed, knitwear georgette, linen, satin, upholstery batiste, standard fabric, denim, crepe-de-Chine, fabrics heavy cloth lining fabrics cotton: cotton: cotton: cotton: no. 80[...]

  • Page 32

    30 Program overview Program Application Needle position L = left R = right Serging light (easily frayed) fabrics. Serging tightly woven (easily frayed) fabrics. Serging medium-heavy fabrics. As a flatlock seam, for joining stretch fabrics and decorative finished edges. Serging medium-heavy fabrics. As a flatlock seam, for joining stretch fabrics an[...]

  • Page 33

    31 Thread tension: The values refer to medium-heavy fabrics and normal polyester thread Stitch length Position of stitch width latch blue green red yellow 3 3 3 3 S 3 3 3 3 S 0 2 3 3 S 0 2 3 3 S 4 3 3 R R 4 3 8 – 9 R R 3 3 3 3 3 S[...]

  • Page 34

    32 Stitch formation correction measures 4-thread overedge seam (program 07) blue green red yellow 3 3 3 3 When all tensions are correctly set, the loops of both looper threads are directly on the edge of the fabric. The left needle thread (blue) is too loose. Set the blue thread tension to a higher value. The upper looper thread (red) appears on th[...]

  • Page 35

    33 The needle thread is too loose. Set the relevant needle thread tension to a higher value. The lower looper thread (yellow) appears on the top side of the fabric. Set the yellow thread tension to a higher value and/or the red thread tension to a lower value. The upper looper thread (red) appears on the underside of the fabric. Set the red thread [...]

  • Page 36

    34 3-thread flatlock seam (progr . 03, 04) wide blue green red yellow 0 2 3 narrow blue green red yellow 0 2 3 The needle thread is too tight. Set the relevant needle thread tension to a lower value. The upper looper thread (red) appears on the underside of the fabric. Set the red thread tension to a higher value. The l ower looper thread (yellow) [...]

  • Page 37

    35 3-thread rolled hem (progr . 05) blue green red yellow 4 3 3 The right needle thread (green) is too loose. Set the green thread tension to a higher value. The upper looper thread (red) appears on the underside of the fabric. Set the red thread tension to a higher value and/or the yellow thread tension to a lower value. The lower looper thread (y[...]

  • Page 38

    36 Folded 3-thread rolled hem (progr . 06) blue green red yellow 4 3 8 – 9 The right needle thread (green) is too loose. Set the green thread tension to a higher value. The upper looper thread (red) only partly loops around the fabric edge. Set the red thread tension to a lower value and/or the yellow thread tension to a higher value. The l ower [...]

  • Page 39

    37 Optional accessories Order No. 98-200 277-10/900 98-200 278-10 98-200 278-10 98-200 279-10/100 98-200 280-10/500 98-200 281-10/600 98-200 282-10/700 98-200 283-10/800 98-200 284-10/900 98-200 285-10 98-200 286-10/100 1 Blindstitch foot For serging blind hems on medium- heavy and thick fabrics. 2/3 T aping attachment with tape guide Use to protec[...]

  • Page 40

    38 Machine maintenance Cleaning the machine Switch the main switch to OFF . Open the looper cover and swivel plate. Use the cleaning brush provided to remove any waste thread. In order to clean the upper blade and the feed dog, you may also use a vacuum cleaner . Cleaning the feed dog Switch the main switch to OFF . Open the looper cover and the sw[...]

  • Page 41

    39 Lubricating the machine Switch the main switch to OFF . Open the swivel plate. Apply a few drops of high-quality machine oil to the points marked with arrows. Oil the machine once a week for normal operation or every ten hours for continuous operation. Open the looper cover and oil the marked points. Oil the marked point on the top of the machin[...]

  • Page 42

    40 upper blade lower blade hexagon- head screw blocking pin 0,5 - 1 mm (1/32”) lower blade blocking pin upper blade hexagon- head screw Changing the upper blade Switch the main switch to OFF . Open the looper cover and the swivel plate. Move the upper blade to its lower position (see Page 24). Undo the hexagon-head screw of the upper blade and re[...]

  • Page 43

    41 T ransporting the machine Position your fingers in the cutout on the rear side of the machine, as shown in the il- lustration. Removing the light bulb Bayonet holder: press the lamp in and turn to the left. Inserting the light bulb Bayonet holder: press the lamp in and turn to the right. Replace the sewing lamp cover and tighten the fastening sc[...]

  • Page 44

    42 Sewing problems and their solutions This machine has been developed with ease of operation in mind. No difficult or tricky set- tings need to be made. Sewing problems of the kind described below may occur as a result of minor adjustment and operating errors. They can be easily adjusted by following the instructions. Problem Cause Solution Needle[...]

  • Page 45

    43 Problem Cause Solution Fabric not neatly W aste thread between upper Upper blade is blunt. trimmed and lower blade. Clean blades. Replace upper blade (see Page 40). Puckered seams Thread tension too tight. Reduce thread tension. Incorrect setting of differential feed. Re-adjust differential feed (see Page 20) Thread has caught due to incorrect T[...]

  • Page 46

    44 Specifications Maximum sewing speed 1200 stitches/min. Seam width 3.0 mm - 6.7 mm Stitch length 1.0 mm - 5.0 mm Presser foot exchangeable Lubrication manual Presser foot height 4.5 mm Overedge stroke 2.0 mm Needle system HAx1SP (130/705 H-PS) Needle size 80/12, 90/14 Number of threads 3, 4 Dimensions (width x height x depth) 310 x 280 x 270 mm W[...]

  • Page 47

    45 Notes[...]

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    46 Notes[...]

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    47 Notes[...]

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    [...]

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    Movable up- per blade Upper over edge looper (red) Lower o veredge looper (yellow) Standard presser f oot Bed slide for stitch width latch Fixed lo wer blade Thread chain cutter Presser foot lifter Needle plate Ridged knob for low ering the upper blade Setting knob for seam width P arts of the hobbylock 4752[...]

  • Page 52

    VSM Group AB • SE-561 84 Huskvarna • SWEDEN www .pfaff.com 412 86 03-26D • English • Inhouse • © 2004-2008 VSM Group AB • Printed in Sweden on envir onmental-friendly paper[...]