Benutzeranleitung / Produktwartung hobbylock 787 des Produzenten Pfaff
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p fr: hobbylock 787 • 788 Instruction manual.
IMPORTANT SAFETY INSTRUCTIONS -This sewing rrachine is designed and manufactured for HOUSEHOLD use only. When using an electric appliance, basic safety precautions should always be followed, including the following: Read all instructions before using this sewing machine.
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Controls of the sewing machine 1 Thread spool stand 2 Carrying handle 3 Left needle thread tension dial 4 Right needle thread tension dial 5 Right looper thread tension dial 6 Left looper thread tensi.
Accessory box Swing open work support 1 2 and pull out accessory box 24. The accessory box can only be inserted in its compartment when held as shown in the illustration at left. The guide groove is up and the projection of the box faces the machine. Electrical connection Use this machine only on a flat surface or on a special machine table.
Switching the machine ON and OFF Power and sewing light together are switched on and off with master switch 21. Switching on: Press switch. Machine and sewing light are switched on. Switching off: Press switch again. Machine and sewing light are switched off.
e3-O ———— I How to handle the thread spool stand Pull thread spool stand 1 as far as it will go in the direction indicated by the arrow. Fully extend telescopic thread guide bar 19. Slowly turn the two upper tele — scopic sections until you hear their detent balls snap in place.
1 Opening and closing looper cover and work support Push looper cover 10 fully to the right, hold it, and swing it down. To close the looper cover, push it up until it locks. To open work support 12. push it in the direction indicated by the arrow. To close the work support, push it lightly until it locks.
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Threadng the left looper Thread guide 9 is threaded by means of looper threader 40. 1 The mark on handwheel 9 must be aligned with the mark on the hou sing. 2. Tauten the thread a little. 3. Push the slide of the looper threader fully to the left, then pull lightly on the thread and allow the slide to return slowly.
Threading the right needle Threading of guide wires 18 and 22 is shown on page 7. In the left-hand illustration the threa ding path is shown from green tension 1 up to right needle eye 6. Thread the needle from the front. The use of needle threader 42 is desc ribed on the next page.
is Needle threader Lower the sewing foot by means of lif ting lever 16. Turn the hand wheel until right looper 31 is positioned right of the needle (see top of page 18). Place the thread in slot A of needle threader 42 and tauten it a little, holding the needle threader a little turned to the front.
Inserting the lint box: Insert the two tabs of lint box 8 down wards in the recess of looper cover 10. Then push the bottom of the box against the machine.
Sewing test After threading, a sewing test should be made. Raise sewing foot lever 16, as shown in the illustration. Hold the thread ends with your left hand while turning the hand wheel with your right hand in the direction indica ted by the arrow on the wheel.
Points to observe during sewing Thread cutter In order to be able to use thread cutter 39 it is necessary to sew beyond the end of the seam. Draw the resulting thread chain through the thread cutter from the rear (see illustration below left). Securing the seam: Knot the thread chain.
Face side Setting the standard thread tension N zijE. Li .:.• ;1 thread Left looper thread Right Left needle thread needle thread Reverse side Optimum seam appearance depends on the type of fabric used, on the thread size, and on the thread tension setting.
1. The right looper thread C is too tight (red thread tension). 2. The left looper thread 0 is too loose (yellow thread tension(. 3. Both tensions must be corrected. 1. The left looper thread 0 is too tight (yellow thread tension). 2. The right looper thread C is too loose (red thread tension).
i 3-thread overedge seam Left needle Right needle UJL ih rn Standard seam width N Standard seam width N -- 57mm 3,5m Max. seam width 7.2 mm Max. seam width 5 mm 3-thread overedge seam: Threading of the right and left looper is described on pages 8 and 9.
Engaging the converter (HL 788) For the Hobbylock 787 the converter is available as a special accessory part (see p. 42 and 46). Turn the hand wheel until right looper 31 is positioned right of the needle. For sewing with converter 41 the right looper thread must be cut off and pul led out of the looper eye.
2-thread overeoge seam er n Adjustable range 5.2 to 7.2 mm Adjustable range 3 to 5 mm r is Left needle Standard seam width N Rght needle Standard seam width N B / / / /, /1 / ‘ The left-hand llustration shows the 2-thread oeredge seam with correctly set thread tensions.
Thread chart for 2-, 3-, 4-thread overedge seam Material Thread Stitch length Light materials: Organdy, light-knit Cotton No. 80- 100 2.0 to 4.0 mm fabric. Taffeta, silk, Silk No. 80- 100 lining materials Synthetic thread No. 70- 140 Medium-heavy materials: Cotton No.
Adjusting the differential feed on the Hobbylock 788 The differential feed prevents inter-ply shift. It consists of two feed dogs, arranged one behind the other, which both pick up and move the workpiece at the same time. The feed amount of either feed dog can be set separately.
This table indicates possible settings of the differential feed of the Hobbylock 788. In order to make sure about the setting required for the fabric you wish to process, a sewing test has to be made. — The differential feed can also be set during sewing.
I Disengaging the upper knife Remove lint box 8. Open work support 1 2 and looper cover 1 0. If necessary, loosen upper knife arresting screw 37. Push rotary lever 27 of the axial upper knife guide fully to the right, hold it, and turn it forwards until the pin enga ges in the hole of the knife.
Changing the sewing foot Raise sewing foot lifting lever 1 6. Disengage the sewing foot by pressing lever F. Engaging the sewing foot: Place the sewing foot under the sewing foot holder so that when you lower the sewing foot lifting lever, crosspiece G of the foot engages in groove H of the sewing foot holder.
Cleaning the thread tensions; — At the points indicated, press thread - tension cover 7 in the direction of the I arrows, thus loosening the cover, then - 1 remove it towards the front. / - Set the 4 thread tensions at — 5. Use the cleaning brush (accessories) to remove dust and lint from between the 1 ‘ tension discs of the 4 tensions.
Fold-over 3-thread roiled hem sewn with polyester thread 120 -140. A rolled hem is used for light, delicate fabrics and is an attractive finish for open edges. Without any effort you can sew professional rolled hems on neck scarves, shawls and valances.
Rolled hem with polyester thread Preparation of the sewing machine: Needle: remove left needle / insert right needle Sewing foot: engage rolled-hem foot ,,R” Seam width: from 3.
Hobbylock 788 2-thread rolled hem sewn with converter 41 (for this purpose the slide must be in position Asee p. 181. Needle: insert right needle Sewing foot: rolled-hem sewing foot Seam width: N (3.5 mm> Stitch length: 1 .0 to 2.0 mm For the Hobbylock 787 the converter is available as special accessory part (see p.
Changing the needles Pull out the mains plug. Lower the sewing foot. Turn the hand wheel in the direction of the arrow until the needle bar is at its highest position. Hold the needle with the tweezers, loo sen screw A or B with the small screw driver, and pull the needle downwards.
Changing the upper knife: Pull out the mains plugl Unscrew knife retaining screw 35 and remove upper knife 11. Disengage the upper knife, see page 23. Insert the new upper knife and tighten its retaining screw securely. Reset upper knife to its cutting position.
Changing the lower knife Pull out the mains plug! Disengage the upper knife (see p. 23). Remove retaining screw 34 of lower knife 33. Turn seam width adjustment knob 26 at position 3 (smallest seam width). Hold the new lower knife in such a way that the pin extends into the front hole of the lower knife.
Upper knife arresting Sewing very thick fabrics and workpie ces with different ply thicknesses: On this machine, all kinds of fabric from extremely thin to extremely thick can be processed. When sewing extre mely thick fabrics or workpieces with different thicknesses, the screw of the upper knife must be tightened, as shown in the illustration.
Oiling the machine: Every time before you take the machine into operation, you should apply a little oil to the places indicated. The bus hings and other important moving parts are made of special material and need to be oiled only once or twice a month.
Stitch selection table The values set for thread tension, stitch length, needle size, and the differential feed setting (788) are only basic settings that have to be varied according to the application, i.e. to the type of fabric, the fabric thickness, and the thread used.
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Stitch type (see table Needle thread Looper thread Needle-System on p. 20) tension tension 15 1 H blue green red yellow A [ B 2-thread rolled hem narrow) light — 2 — 1 to N medium — 2 — 1 to N.
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Stitch type (se:tle Needle thread Looper thread Ntm on p 20) tension tension 15 x I H blue green red yellow A B Decoratme 3-thread sergng seam 3-thread tight — 2 + 2 ± 4 fiatioce Seam) Size medium .
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Sewing problems and solutions These machines have been developed for easy operation, and there are no difficult adjustments to be made. Sewing problems of the kind described below may occur due to minor adjustment. and operation errors. They can easily be corrected by following the instructions below.
Prob’em Cause So’ution Machine does not Power supply interrupted Close looper cover 10 or run although mas- looper cover 1 0 or work support 1 2 (see p. 7( ter switch is on work support 1 2 (see p. 7( Fabric not neatly Sewing lint between upper Clean knives (see p.
Accessories 1 Screwdriver (big) 2 Screwdriver (small) 3 Lint brush 4 Tweezers 5 Upper knife 6 Thread unreeling disc 7 Needles 8 Sewing machine oii 9 Rolled hem sewing foot (R) 10 Sewing foot N2 11 Sewing foot N3 1 2 Thread spool net 13 Needle threader 2 Description of specia’ accessories on pp.
Thread spool net Very useful for synthetic threads which tend to become loose, unravel and slip down (Fig. A>. Thread unreeling disc The thread unreeling disc shown as item 6 of the accessories is used for smaller thread spools. Remove thread spool centering piece 36 from the thread reel pin.
fabric N beads 1—1.5mm Fig. 1 Fig. 2 Bead sewing foot (Fig. 1) This special sewing foot is for sewing on beads, sequins, strass bands, lead- and ordi nary cords. These operations are carried out with one needle. 1. Set differential feed at N (Hobbylock 788) 2.
E’astic tape sewing foot This special sewing foot is for sewing on an elastic tape; in the same opera tion the fabric is trimmed and serged, and also gathered by the contracting elastic tape. Preparing the machine set at N (Hobbylock 788) use 1 or 2 needles, depending on tape width insert elastic taping foot 4 to 4.
Taping foot 1 This special sewing foot is for sewing on tapes. On stretch materials (knitwear) the seams are prevented from stretching when a tape is sewn on.
Cording foot This special sewing foot s used for sewing a cording tape between two fabric plies in one operation Preparing the machine set at N (Hobbylock 788) two needles or left one engage cording foot engaged 3 to 5 inserting the fabric plies 1. Raise the sewing foot 2.
Shirring foot (Hobbylock 788) This special sewing foot is used for joi ning two pieces of fabric and shIrring the bottom ply in one operation. Preparing the machine set at N (Hobbylock 788) two or one engage shirring foot engaged ±3 to +5 Inserting the fabric plies 1.
Gimp thread sewing foot This special sewing foot is used for sewing in gimp threads (cords, synthe tic threads) up to a thickness of 1.0 mm. By this means a wavy, i.e. more firm hem finish is achieved (e.g. on wedding dresses, curtains, etc.). Preparing the machine set at N (Hobbylock 788) insert right needle (HL 787, 788) 3 to 4 mm 1.
A Specifications: Sewing foot Lubrication Sewing foot height . Needle system Needle size Number of threads 788/787 Dimensions Weight 788 / 787 . Contents of cardboard box • 1,300 stitches/mm. 3—7.2mm 1—4mm(HL788) 1 — 5 mm (HL 787) inged Manual 5mm 130/705 H or 1 5 x 1 H 75-9Oorll-14 2,3,4/3,4 315x280x330mm 8.
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