Pfaff coverstyle 4850 manual

Owner´s manual[...]

4 6 1 2 3 5 17 8 9 12 13 15 16 14 10 11 7[...]

P arts of the coverstyle 1 Upper needle-thread tension 2 Upper needle-thread tension 3 Carry handle 4 Thread tension/upper looper thread 5 Thread tension/lower looper thread 6 Thread tension/two-thread chainstitch looper/cover stitch looper 7 Looper cover 8 Blade guard 9 Looper disengaging lever 10 Standard presser foot 11 Needle plate 12 Swivel pl[...]

Accessory box Open the accessory box 47 by gently pressing the bottom of the box inwards. The following accessories can be found in the box: 1 Overlock needle system EL X 705, cat. no. 2002 2 Thread unreeling discs (5) 3 Transparent presser foot (F) for cover stitch and two-thread chainstitch 4 Clip-on thread guide 5 Cleaning brush 6 Screw driver 7[...]

This household sewing machine is designed to comply with IEC/EN 60335-2-28 and UL1594 IMPOR T ANT SAFETY INSTRUCTIONS When using an electrical appliance, basic safety precautions should always be followed, including the following: Read all instructions before using this household sewing machine. DANGER - T o reduce the risk of electric shock: • A[...]

Speci fi cations Maximum sewing speed 1300 stitches/min. Seam width 1.4 mm - 9.0 mm Cover stitch width 5 mm Stitch length 0.5 mm - 4 mm Presser foot exchangeable Lubrication manual Presser foot height 4.5 mm Overedge stroke 2.0 mm Needle system EL X 705, cat no. 2002 Needle size 80/12, 90/14 Number of threads 2,3,4,5 Dimensions (width x height x d[...]

Simple, up-to-date sewing Congratulations! You have bought a high-quality product that provides unique advantages. Your new coverstyle™ can take any fabric in its stride and will sew through thick and thin. To learn about your new coverstyle follow the instruction in this manual. Some pictures of the machine may be slightly different from your co[...]

Page Adjusting the machine to Prog. 01, 02 .............................................................................................34, 35 Changing a spool on a threaded machine ............................................................................................24 Clamp spring ............................................................[...]

Page Sewing problems and their solutions ....................................................................................................61 Spool disc ...................................................................................................................................................10 Spool holder ................................[...]

6 Machine cover The machine cover protects the machine from dust and dirt. When the sewing process is fi nished, push the telescopic thread guide 32 together. The spool stand 34 must be pushed to its full extent in to the machine, regardless of whether a spool is attached. Place the cover over the machine. The accessories should be stored in the a[...]

7 F or USA and Canada This appliance has a polarized plug (one blade wider than the other). To reduce the risk of electric shock, it is designed to fi t into a polarized outlet only one way. If the plug does not fi t correctly into the outlet, reverse the plug. If it still does not fi t, contact a quali fi ed electrician to install the proper o[...]

8 Looper cover Push the looper cover 7 fully to the right and then swivel it down. Five types of stitches and their threading paths are portrayed in color on the inside of the looper cover. Note: The electricity supply of the machine is cut off as soon as the looper cover or swivel plate 12 is opened, for safety reasons, i.e. se- wing with the mach[...]

9 Spool holder Before placing thread cones/spools on machine you must pull the spool holder 34 fully away from the back of machine. T elescopic thread guide Pull the telescopic thread guide 32 upwards to its highest position. To ensure optimum thread feed, turn the tele- scopic parts slowly until you hear the locking balls fl ick into place. Threa[...]

10 Spool disc/cone thread adapter It is advantageous to use the spool disc 37 when sewing with large spools (5,000 - 10,000 m). To do this, place the cone thread adapter 36 onto the spool pin 35 . With synthetic threads, the spool discs help eliminate vibration of the cones/spools aiding in smoother feeding of the threads. Clip on thr ead guide Use[...]

11 Presserfoot With standard presser foot 10 use setting ”A” on the spring loaded presser foot latch for the cover stitch (Prog. 02), the 2 thread chainstitch (Prog. 01), the 5 thread safety stitch seam (Prog. 09) and the 4 thread safety stitch seam (Prog. 08). Transparent presser foot F from the accessories can also be used for the cover stitc[...]

12 Needle position This machine has 4 needle positions and can sew with a maximum of two needles at any one time. The needle positions are L1, L2, R1 and R2. The fastening screw is located directly above the corresponding needle. The different needle positions are depicted in a schematic drawing in the instruction manual. Also refer to the examples[...]

13 Changing the needle T urn off the electrical power T o remove: Lower the presser foot and move the needle(s) to the highest position by turning the handwheel towards you. Push the needle inserting tool (from the accessory box 47 ) from below upward fully over the needle. Loosen the fastening screw of the needle (without remo- ving it) with the A[...]

14 Threading the thread guides Place the spools on the spool pins 35 . You will fi nd information on the thread net, thread unreeling disc, spool disc and cone thread adapter on pages 9 and 10 . Thread through the thread guides 31 from the back to the front fol- lowing the colored threading paths. Lift the carry handle 3 upwards. Thread through th[...]

15 Threading the upper overedge looper (pink) Turn the handwheel towards you until the up- per overedge looper 18 is in its highest position. Thread in a sequence of 1 to 8. Thread from the front through the eye of the upper overedge looper 8. Pull approximately 4” (10 cm) of thread through the looper and place it to the left under the presser fo[...]

16 Threading the lower overedge looper (yellow) Turn the handwheel towards you until the lo- wer overedge looper 19 is on the extreme right. Thread in a sequence of 1 to 10.[...]

17 Thread through the thread guides 1 to 8 , marked yellow. Thread from the front through the eye of the lower overedge looper C (= threading point 10 ). Press lever A downwards and hook the thread into guide B . Please also refer to the drawing below. Note: The lever returns automatically to its position as soon as you start sewing. Pull approxima[...]

18 Threading the two-thread chainstitch looper and cover stitch looper (violet) for the chainstitch Turn the handwheel towards you until the two-thread chainstitch looper 20 is on the extreme right. Thread in a sequence of 1 to 11.[...]

19 Thread the thread guides which are marked with a violet square in a sequence of 1 to 9. Thread from the front through eye C of the two thread chainstitch looper and the cover stitch looper (= threading point 11). Push lever A upward and hook the thread into slot B . Also refer to the drawing below. Note: The lever returns automatically to its po[...]

20 Exception: Threading the two-thread chainstitch looper and cover stitch looper for the cover stitch (violet) (prog. 02) Turn the handwheel towards you until the two thread chainstitch looper 20 is on the extreme right. Thread in a sequence of 1 to 10.[...]

21 Thread the thread guides, as shown in the diagram, in a sequence of 1 to 8 . Some of the threads guides are marked with a violet square. Thread from the front through eye C of the two-thread chainstitch looper and the cover stitch looper (= threading point 10). Press lever A upward and hook the thread into slot B . Also refer to the drawing belo[...]

22 Threading the needles Thread in a sequence of 1 to 8 . The thread must be guided through the lower slot of thread guide 4 . Pull approximately 4” (10 cm) of thread through the looper and place it to the left under the presser foot. Note: For the cover stitch the thread must also be guided through the lower thread guide 7 .[...]

23 Exception: Threading needle L2 when sewing a 5- thread safety-stitch seam (Prog. 09), a 4-thread safety-stitch seam (Prog. 08) and a 2-thread chainstitch (Prog. 01) Thread in a sequence of 1 to 9. The thread must be guided through the upper slot of thread guide 5. Pull approximately 4” (10 cm) of thread through the looper and place it to the l[...]

24 Important note on threading The needle(s) must always be threaded last so that the needle threads do not run under the looper thread as seen in drawing 1 , but instead over the looper thread as depicted in drawing 2 . Should this sequence not be followed, thread breakage or missed stitches can occur. If the looper threads break, you must pull th[...]

25 Needle threader Move the needle(s) into the highest position and lower the presser foot. Place the thread from right to left in notch A of the needle threader (to be found in the accessory box). One of the two triangles must point upwards. Place the needle threader onto the front groove of the needle. Slide the needle threader down to the needle[...]

26 Overview of the threading paths and threading sequences Progr am 01: 2-thread chainstitch Progr am 03: 2-thread fl atlock, narrow Progr am 11: 2-thread serging, narrow Progr am 12: 2-thread rolled hem Progr am 13: folded 2-thread rolled hem Progr am 02: cover stitch Progr am 04 2-thread fl atlock, wide[...]

27 Overview of the threading paths and threading sequences Progr am 05: 3-thread overedge. narr ow Progr am 14: 3-thread rolled hem Progr am 15: folded 3-thread rolled hem Progr am 16 3-thread fl atlock, narrow Progr am 07 4-thread overedge seam Progr am 06: 3-thread overedge, wide Progr am 17: 3-thread serging, wide Progr am 18: 3-thread fl atlo[...]

28 Overview of the threading paths and threading sequences Progr am 09: 5-thread safety-stitch seam Progr am 10: 2-needle 3-thread assembly seam Presser foot pressur e The pre-set presser foot pressure on the machine is suitable for medium heavy fabrics. The presser foot pressure does not need to be adjusted for most fabrics. If you are working wit[...]

29 Thread chain cutter After fi nishing the seam, sew an approx. 6” - 8” (15 - 20 cm) long thread chain. Pull the thread chain from the right to left over the th- read chain cutter 33 . This will cut off the thread chain. Clamp spring for serging thread chain 25 Using this feature you can secure the thread chain at the start of the fabric by p[...]

30 Disengaging the upper bladet T urn off the electrical power Move the movable upper blade 23 into its hig- hest position by turning the handwheel towards you. Remove the waste container and open the looper cover and the swivel plate. Push the knob for lowering the upper blade 27 fully to the right. To lower the upper blade turn the knob towards y[...]

31 Swiveling stitch width latch F or standard overlock seams: The swiveling stitch width latch 22 remains in the basic position when sewing all types of standard overlock seams (exception: Program 01, 02). F or rolled hems: Pull knob ( A ) to the right and swivel the swive- ling stitch width latch 22 downwards. This setting allows you to sew all ty[...]

32 Attaching the converter T urn off the electrical power Push the tip of the converter into the back side of the upper overedge looper until it clicks into place and push the converter onto the overedge looper bracket. To remove the converter, gently push the point of the converter from the eye of the upper overedge looper. You can now remove the [...]

33 Setting the seam width The required seam width can be adjusted anywhere between 3.5 and 6 mm by turning the adjusting knob for seam width 13 . The setting can be seen through the viewing window 14 . The two thread chainstitch is sewn with a clea- rance of 6.5 to 9 mm. Illustration A: Should loops project out of the workpiece, move the movable up[...]

34 Adjusting the machine to the cover stitch (Prog. 02) and two thread chainstitch (Prog. 01) This is only necessary if you do not want to trim the fabric edge. Insert the needle(s) (see page 13) according to the overview of the threading paths and threading sequences (see page 26). Open the looper cover and remove the blade guard 8 by pulling it t[...]

35 Press the power table 45 downwards into the designated slot on the looper cover. Close looper cover. Note: Please ensure that the upper overedge looper is disengaged before attaching the power table 45. To return the machine to its previous settings after sewing with the cover stitch or two thread chainstitch: Open the looper cover and remove th[...]

36 Differential feed The differential feed consists of two feed dogs (A + B) , one behind the other, which feed the fabric. The movement of the front feed dog (A) and thus the amount of material to be fed can be regulated using the regulator wheel 41 . The setting range is between 0.5 and 2.0. The standard setting is 1.0, where the move- ment of th[...]

37 Set the regulator wheel for the differential feed 41 to 2.0. Here the front feed dog feeds twice as fast as the rear feed dog. This means that the front feed dog feeds twice as much fabric as the rear feed dog, causing the material to gather. Here you will avoid stretching in the seam when working with knitwear, such as jerseys or gathered fabri[...]

38 Adjusting the stitch length You can set the desired stitch length between 0.5 mm to 4.0 mm by turning the stitch length adjustment knob (42) . Note: For the two thread chainstitch, the setting should be 3.0 or higher. Removing the needle plate Raise the presser foot and move the needle(s) to the highest position. Remove the presser foot and open[...]

39 Securing the upper blade T urn off the electrical power It is recommended to secure the movable upper blade 23 before sewing heavy fabrics. Raise the needle(s) to its highest position and open the swivel plate. Tighten the screw fully using the Allen key. This screw should always be slightly loosened again after sewing heavy fabrics. Note: The s[...]

40 Progr am Application Needle position Stitch length Stitch width Program 01 2 thread chainstitch Joining fabric layers where a traditional pressed open seam is re- quired. Also works well as a basting stitch for test fi tting garments. 3-4 3.5 Program 02 Cover stitch Sewing hems and fancy stitches. 3-4 3.5 Program 03 2-thread fl atlock, narrow [...]

41 Stitch width latch 22 ■ = top ® = bottom Looper disengaging level 9 Power table 50 ● = with ° = without Converter 28 ■ = with ® = without Thread tension The value refer to medium-heavy fabrics and normal polyester thread blue green pink yellow violet ® ▼● ® 5.0 2.0 ® ▼● ® 6.0 6.0 1.0 ■▲ ° ■ 1.5 5.0 ■▲ ° ■ 1.5 5[...]

42 Progr am overview Progr am Application Needle position Stitch length Stitch width Program 10 2-needle, 3-thread assambly seam Joining and simultaneous serging of light, very stretchy fabrics. 2 5.5 Program 11 2-thread serging, narrow Serging light fabrics. 1.5 5.5 Program 12 2-thread rolled hem Serging very light fabrics. Decora- tive edges. 1-2[...]

43 Stitch width latch 22 ■ = top ® = bottom Looper disengaging level 9 Power table 50 ● = with ° = without Converter 28 ■ = with ® = without Thread tension The value refer to medium-heavy fabrics and normal polyester thread blue green pink yellow violet ■▲ ° ■ 5.0 4.0 1.0 ■▲ ° ■ 4.0 1.0 ® ▲ ° ■ 1.5 6.0 ® ▲ ° ■ 4.0[...]

44 Important notes on sewing with the cover stitch The power table is marked with various units of measurement. The upper fi gures are in cm. The lower fi gures are in inches. Note: The hemmer guide H2 is available as an optional accessory. With this optional accessory you can hem your fabric effortlessly without having to press under the hem edg[...]

45 2. If sewing on a tubular item, i.e. pant or sleeve hem: Sew around tubular item, oversewing 4-5 stitches at the beginning of your seam ’ After the last stitch, turn the hand wheel towards you until the needles pierce the fabric and you have heard each needle ”click” (just before the needles are in the lowest position). Edge guide Push the[...]

46 Stitch formation correction measures cover stitch Progr am 02 When all tensions are correctly set, the needle threads (green and blue) are just slightly visible on the underside of the fabric. The looper thread (violet) is situated loosely in between. The right needle thread (green) is too loose, causing large loops on the underside of the fabri[...]

47 5-thread safety-stitch seam Progr am 09 Since the 5-thread safety stitch seam con-sists of the 2-thread chainstitch and the 3-thread overedge seam , you can refer to the correction possibilities of these seam below and on page 49. 4-thread safety-stitch seam Progr am 08 Since the 4-thread safety stitch seam consists of the 2-thread chainstitch a[...]

48 4-thread overedge seam Progr am 07 When all tensions are correctly set, the loops of both looper threads (pink and yellow) are directly on the edge of the fabric. The needle threads (blue and green) are too loose, causing larger loops of needle thread on the underside of the fabric. Set the blue and green thread tension to a higher value. The up[...]

49 3-thread overedge seam narrow and wide Progr am 05 and 06 When all tensions are correctly set, the loops of both looper threads (pink and yellow) are directly on the edge of the fabric. The upper looper thread (pink) appears on the underside of the fabric. Set the pink thread tension to a higher value and/or the yellow thread tension to a lower [...]

50 3-thread fl atlock narrow and wide Progr am 16 and 18 The needle thread is too tight. Set the needle thread tension (blue) to a lower value. The upper looper thread (pink) appears on the underside of the fabric. Set the pink thread tension to a higher value. The lower looper thread (yellow) is too loose. Set the yellow thread tension to a highe[...]

51 2-thread fl atlock narrow and wide Progr am 03 and 04 When all tensions are correctly set, the loops of both threads are directly on the underside of the fabric. Note: The converter (see page 32) must be at- tached to sew the 2-thread fl atlock seam. The needle thread is too loose or the lower looper thread (yellow) is too tight. Set the relev[...]

52 3-thread rolled hem Progr am 14 The upper needle thread (green) is too loose. Set the green thread tension to a higher value. The upper looper thread (pink) appears on the underside of the fabric. Set the pink thread tension to a higher value and/or the yellow thread tension to a lower value. The lower looper thread (yellow) appears on the top s[...]

53 3-thread rolled hem (folded) Progr am 15 The upper looper thread (pink) only partly loops around the fabric edge. Set the pink thread tension to a lower value and/or the yellow thread tension to a higher value. The upper needle thread (green) is too loose. Set the green thread tension to a higher value. The lower looper thread (yellow) appears o[...]

54 2-thread rolled hem Progr am 12 Note: The converter (see page 32) must be at- tached to sew the 2 thread rolled hem. The upper needle thread (green) is too tight. Set the green thread tension to a lower value and/or the yellow thread tension to a higher value. The lower looper thread (yellow) is too tight. Set the yellow thread tension to a lowe[...]

55 2-thread rolled hem (folded) Progr am 13 Note: The converter (see page 32) must be at- tached to sew the 2 thread rolled hem. The upper needle thread (green) is too loose. Set the green thread tension to a higher value and/or the yellow thread tension to a lower value. The lower looper thread (yellow) is too loose. Set the yellow thread tension [...]

56 2-needle 3-thread assembly seam Progr am 10 Note: The converter (see page 32) must be at- tached to sew the 2-needle 3-thread assembly seam. The upper needle thread (green) is too loose. Set the green thread tension to a higher value. The lower needle thread (blue) is too loose. Set the blue thread tension to a higher value. The lower looper thr[...]

57 F abric Thread Stitch length Light fabrics: organdy, fi ne knitwear, taffeta, silk, lining fabrics Cotton no. 50 - 70 Synthetic thread no. 70 - 140 2.0 - 4.0 mm Medium heavy fabrics: cot- ton, tricot, linen, dress fabrics Cotton no. 40 - 60 Synthetic thread no. 70 - 140 2.0 - 4.0 mm Heavy fabrics: tweed, suit fabrics, denim, heavy cloth Cotton [...]

58 Machine maintenance Cleaning the machine T urn off the electrical power Remove the waste container and open the looper cover and swivel plate. Disengage the upper blade (see page 30) and remove the presser foot and the needle plate. Use the accessory brush provided to remove any waste thread from the upper and lower blades, the differential feed[...]

59 Changing the upper blade T urn off the electrical power To remove: Set the adjusting knob for seam width to 3.5 mm. Fasten the upper blade (see page 39) before loosening the fastening screw (A) with the wrench provided in the accessory box. Then remove the upper blade. T o insert: Attach the new upper blade and gently tighten the fastening screw[...]

60 Changing the light bulb T urn off the electrical power Using the screw driver in the accessory box loosen the fastening screw to the sewing light cover 16 until the cover can be removed. Push the light bulb fully into its socket. Rotate counter clockwise through half a turn and remove. Guide the new light bulb (max. 15 W) into the socket and twi[...]

61 Sewing problems and their solutions This machine has been developed with ease of operation in mind. No dif fi cult 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 in structions. Problem Cause Solution Nee[...]

62 P arts of the coverstyle 31 Thread guides with color coding 32 T elescoping thread guide 33 Thread chain cutter 34 Thread spool stand 35 Thread spool pin 36 Cone thread adapter 37 Spool disc 38 Electrical power master switch 39 Machine socket, foot contr ol 40 Handwheel 41 Regulator wheel for differential feed 42 Stitch length adjustment knob 43[...]

44 38 39 43 42 41 40 31 32 33 34 37 36 35[...]

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