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For easier understanding of this instruction please told this or the last page out when reading. Safety rules For the United Kingdom only. The leads must under no circumstances be connected to the safety-lead terminal I nor to a plug with three pins.
Parts of the hobbylock 4760 (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 tension dial (7) Thread tension cover (10) Looper cover with recess (1 2) Swivel-type work support (13) Needle plate (14) Sewing foot (15) Needle holder (16) Sewing foot lifting lever (1 7) Thread spooler holder (18) Color-coded thread guides (19) Telescopic thread guide bar (24) Accessory box (25) Stitch l
Important safety instructions For the United States only When you use an electrical appliance, basic safety precauti ons should always be adhered to as follows: Read all instruc tions before using this sewing machine. DANGER To reduce the risk of electric shock: 1. The sewing machine should never be left unattended when plugged in. Always unplug this appliance from the electric outlet immediately after using and before cleaning it. 2. Always unplug before relamping.
Notes on safety Notes on safety for domestic sewing machines according to DIN 57 700, Section 28 or IEC 335, Section 28. 1. The user must exercise adequate caution with regard to the up and down moving of the needle and constantly observe the sewing area during work. 2. When leaving the machine, during maintenance work or when changing mechanical parts or accessories, always disconnect the machine from the mains by pulling out the mains plug. 3.
Simple, up-to-date sewing Congratulations! You have bought a high-quality product that provides unique advantages. Your new hobbylock 4760 can take any material in its stride and will sew, trim and neaten up for you in one operation. Your PFAFF hobbylock features the very latest in design and technology, and it is just as easy to use as this instruction manual is to follow. If you now take a bit of time to study the instruction manual nothing can go amiss.
Contents Accessory box Electrical connection Master switch and sewing light Foot control Notes on safety How to handle the thread spool stand Opening the looper cover and the swivel-type work support.
Changing the sewing foot Changing the light bulb Cleaning the thread tensions • • 27 . 28, 29 Rolled hem with 3 threads Rolled hem with 2 threads • • 30 31 Changing the needles Changing the knives 26 • .
Accessory box Swing open work support 12 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. Connecting foot control 28: Insert plug 29 of the control in machine socket 20. Then connect mains plug 30 to a po wer source.
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. Foot control The speed of the Hobbylock is regula ted as follows: The more you press the foot control down, the faster the machine will sew. Notes on safety This appliance has a polarized plug (one blade wider than the other).
How to handle the thread spool stand Pull thread spool stand 1 as far as it will go in the direction indkated by the arrow. Fully extend telescopic thread guide bar 19. Slowly turn the two upper tele scopic sections until you hear their de tent balls snap in place. After use fold up telescopic thread guide bar 19. Push thread spool stand (with or without spools) up against the machine.
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. Behind the looper cover converter 41 is illustrated with its slide settings for the respective stitch type. On the inside of the looper cover the individual threa ding paths are illustrated in colors.
Threading the right looper The slide of converter 41 must be in it: right position B. Please refer to page 20. Thread right looper 31 in sequence 1 to 9 and pull approximately 10cm (4 of thread through the looper eye (the thread path is marked red). Important: In order to obtain perfect sewing re suits, the thread must be pulled bet ween the tension discs when threading the tensions.
Threading the left looper Thread left looper 32 (yellow thread path) in sequence 1 to 6. From thread guide 6 pull the thread through looper eye 7. Align the mark on handwheel 9 with the mark on the housing. Tauten the thread a little and place it in thread guide 8 by means of tweezers 43. 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 housing. 2. Tauten the thread a little. 3.
Threading the right needle Threading of guide wires 18 and 22 is shown on page 9. 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 described on the next page. Threading the left needle Threading of guide wires 18 and 22 is shown on page 9, In the left-hand illustration the threa ding path is shown from blue tension 1 up to left needle eye 6. Thread the needle from the front.
Needle threader Lower the sewing foot by means of lifting lever 16. Turn the hand wheel until right looper 31 is positioned right of the needle (see top of page 20). 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. With the needle located between the two guide lugs B move the needle threader slowly downwards at the rear side of the needle until small hook C engages in the needle eye.
After threading the machine, push handle 2 down, and close work support 12 and looper cover 10. 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. For removal of the lint box, use the reverse order. Seam allowance If the cutting is guided along below mark N on looper cover 10, a seam allowance of 16 mm must be taken into consideration when cutting the fabric.
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. Hold the threads taut and lay them back under sewing foot 14. Make sure the threads interlock correctly during sewing (thread chain). Insert the test fabric up to upper knife 11 and lower sewing foot lever 16.
Points to observe during sewing Sew the first stitches slowly. If the ma chine has been rethreaded, place the fabric under sewing foot 14 and push it up to the needle before starting to sew. Since the fabric is fed automatically, do not pull or push the fabric. Use your hands for guiding only. 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).
Face side Right looper thread Setting the standard thread tension N Optimum seam appearance depends on the type of fabric used, on the thread size, and on the thread tension setting. Set the N on the thread tension dials opposite the round colored mark on thread tension cover 7 (see illustration below). Make the correct adjustment after exa mination of the interlocking of threads (the illustration on the left shows a cor rect four-thread overedge seam).
Face side Reverse side Possibihties requiring thre ad tension corrections When the thread tension is turned in (+) direction, the tension is increased. When turned in (—) directio n it is decreased. The left needle thread A is too loose (blue thread tension). The right needle thread B is too loose (green thread tension>. 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.
3-thread overedge seam: Threading of the right and left looper is described on pages 10 and 11. The slide of converter 41 must be set at its right position B (see p. 20). The 3-thread overedge seam is sewn with two looper threads and one needle thread. Seam width adjustments at adjustment knob 26 (3 to 5 mm) only refer to the right needle. When the left needle is used, the set value is increased by 2.2 mm (seam width 5.2 to 7.2 mm).
Engaging the converter 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 pulled out of the looper eye. All seams sewn with converter 41 are only sewn with left looper 32 and with one or two needle threads. The left looper thread placed over right looper 31 must be pulled over the point of the right looper in the direction of the arrow, as shown in the left-hand illustration.
2-thread overedge seam Left needle Right needle Standard seam width N Standard seam width N r L__ 5,7 MM Adjustable range 5.2 to 7.2 mm ceside•Heve Adjustable range 3 to 5 mm The left-hand illustration shows the 2-thread overedge seam with correctly set thread tensions. Possible correction requirements: I 1. Looper thread A is too loose (yellow thread tension>. 2. Needle thread B is too tight (blue or green thread tension). 3. Both tensions have to be corrected. 1.
Thread chart for 2-, 3-, 4-thread- overedge seam Material ! Light materials: Organdy, light-knit fabric, Taffeta, silk lining materials Medium-heavy materials: Cotton, tricot linen, dress materials Heavy materials: Tweed, suit materials, denim, heavy cloth Knit fabrics: Rolled hem with 2 or 3 threads (bulk thread) Thread Stitch length Cotton No. Silk No. Synthetic thread No. 80 80 70 100 100 140 2,0 to 4,0 mm Cotton No. Silk No. Synthetic thread No.
Adjusting the differentia’ feed The differential feed prevents inter-ply shift. It consists of two feed dogs, ar ranged 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, It is possible to have the workpiece moved more by the front feed dog than by the rear one and vice versa. Owing to that very good sewing results are accomplished.
;s table indicates possible sett ings of the differential feed. In order to make sure about settino recuired for the fabric t you wish to process, a sewing test renusi tead can also be set durin has to be made. The di g sewing.
Disengaging the upper knife Remove lint box 8. Open work support 12 and looper cover 10. 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. Now the upper knife is disengaged. I I i II Adjusting the seam width The standard seam width setting is marked with N (3.5 mm). Disengage upper knife 11 according to the above description.
Changing the sewing foot Raise sewing foot lifting lever 16. Disengage the sewing foot by pressinc 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. G Changing the light bulb: Pull out the mains plug. Loosen lamp cover retaining screw 38. Open the lamp cover. Behind it. the light bulb of the sewing light is situated.
Cleaning the thread tensions: At the points indicated, press thread tension cover 7 in the direction of the arrows. thus loosening the cover, then 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 tension discs of the 4 tensions. Reset all thread tensions to N, or to the values set before cleaning.
Reverse side Fold-over 3-thread rolled 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 ca sew professional rolled hems on neck scarves, shawls and valances. This rolled hem is sewn with three threads (see page 29).
Rolled hem with polyester thread Preparation of the sewing machine: Needle: Sewing foot: Seam width: Stitch length: Thread: remove left needle / insert right needle engage rolled-hem foot ,,R” from 3.0 to 4.0 mm (depending on material) from 1.0 to 2.0 mm (short stitch length) polyester thread 1 20-140 for green, red and yellow thread tensions Threading path: 1. right looper, red path polyester thread 2. left looper, yellow path polyester thread 3.
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Changing the needles Pull out the mains plug. Lower the se wing 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, out of the needle holder. Inserting the needle The needle has to be inserted with the flat side of its shank facing rear.
Changing the upper knife: Pull out the mains plug! Unscrew knife retaining screw 35 and remove upper knife 11. Disengage the upper knife, see page 25. Insert the new upper knife and tighten its retaining screw securely. Reset upper knife to its cutting position. L El It) 32 Set upper knife with knife guide 27 up (cutting position). Turn the handwheel until the upper knife is at its lowest position.
Changing the lower knife Pull out the mains plugl Disengage the upper knife (see p. 25). 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. Then screw down re taining screw 34 together with the pressure tab. Align the cutting edge of the lower knife so that it is flush with the needle plate surface.
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. By tightening screw 37, the upper knife is arrested axially.
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. One to two drops of PFAFF sewing machine oil are sufficient.
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Sewing foot N 3 for seam widths of 3 to 4.5 mm Sewing fot N for seam widths of 4 to 6 mm Sewing foot N2 for seam widths of 5.5 to 7.
Fabric (see table on p. 22) Stitch type Neeae thread tension green blue 2-thread roiled hem (narrow) light Looper threadtension 2 -_________ — — A 1 to N — -1 toN -2 medium yellow red Needle-Syst 7 An A, Folded 2-thread rolled hem N light 3-thread overedge seam (narrow) 1 N N N N N +1 N N — I medium [ j heavy —- -‘ hre .c eseredge rears light .. .wio.: medium - - 3-thread se-awn w:.
N or N 3 (see top of p. 37) N or N 2 (see top of p. 37) N or N 3 (see top of p. 37) N or N 2 (see top of p.
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4 I I I N or N 3 (see top of p. 35) I I I N or N 2 (see top of p.
s n Sewing problems and solution there are no difficult adjustme loped for easy operation, and deve stmer adju r mino to due r These machines have been occu of the kind described below may to be made. Sewing problems the instructions below. easily be corrected by following can They s. and operation error Problem Cause Needle breakage Needle bent or point damaged Needle not fully inserted Solution Insert new needle Insert new needle correctly (seep.
Problem Cause Solution Machine does not run although master switch is on Power supply interrupted work support 12 (see p. 9) Close looper cover 10 or Fabric not neatly trimmed Sewing lint between upper and lower knife Clean knives (see p. 34) Upper knife blunt Exchange upper knife (see p. 32) Thread tension too tight Reduce thread tension (especially for light materials) (pp.
Accessories 1 Screwdriver (big) 2 Screwdriver (small) 3 Lint brush 4 Tweezers 5 Upper knife 6 Thread unreeling disc 7 Needles 8 Sewing machine oil 9 Rolled hem sewing foot (R) 10 Sewing foot N2 1 1 Sewing foot N3 1 2 Thread spool net 13 Needle threader 2 ries Description of special accesso 52 45— on pp. Elastic tape sewing foot Part No. 29-9 24 993-80/000 3 Taping foot Part No. 29-924 993-82/000 Blindstitch sewing foot Part No. 29-924 993-81/000 Bead sewing foot Part No.
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. Put the thread spool on the thread reel pin and place the thread unreeling disc on top of it, with rounded-off section C facing down, as shown in Fig. B.
fabric — ,5 mm Ag. 1 Bead sewing toot (Fg. 1) This special sewing foot is for sewing on oeeos, sequrs, srass nary cords. These operations are carrieo cut wrtF one rteedrt, ordi 1. Set differential feed at N. 2. Insert bead sewing foot. 3. For small beads use the right needle For large beads use the left needle. 4. Push the bead tape throught guides 1 anc 2 o the enc o toe 5. For all seam width settings it is possibie ic work with c Scdrcr ;ce guide the fabric along the right-hand sewing cc, edge. 6.
Elastic 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. I I I I I I I I I I - Preparing the machine Differential feed setting: set at N Needles: use 1 or 2 needles, depending on tape width Sewing foot: insert elastic taping foot Thread tension: ,,N” Stitch width: 4 to 4.5 Stitch length: approx.
Taping foot This special sewing foot is for sewing cr tapes. On stretch materials (knitwear) the seams are prevented from stretchirg when a tape is sewn on. Preparing the machine Differential set at N feed setting: use 1 or 2 needles, Needles: depending on tape width Stitch width: 3 to 5 mm (adjustable for a tape width from 4 to 9 mm) Stitch length:,, N” Thread tension:,, N” inserting the tape: 1. Set needle at highest position. 2. Disengage upper knife. 3. Raise sewing foot and place tape ir.
Cording foot This special sewing foot is used for se wing a cording tape between two fabric plies in one operation. Preparing the machine Differential set at N feed setting: two needles or left one Needles: engage cording foot Sewing foot: engaged Upper knife: Thread tension: ,,N” 3 to 5 Stitch width: Stitch length: Inserting the fabric plies 1. Raise the sewing foot 2. Set needle at its highest position 3.
Shirring foot This special sewing foot is used for joi ning two pieces of fabric and shirring the bottom ply in one operation. Preparing the machine Differential set at 2 feed setting: two or one Needles: engage shirring foot Sewing foot: engaged Upper knife: Needle thread +3 to +5 tension: Stitch length: Inserting the fabric plies 1 Raise the sewing foot. 2. Set needle at its highest position. 3. Place bottom fabric ply 1 between needle plate and shirring foot, and insert up to upper knife. 4.
String sewing toot This special sewing foot is used for se wing in gimp threads (cords, synthetic 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 Differential feed setting: Needle: Stitch width: Stitch length: Thread tension (cf. section ,,Rolled hem): set at N insert right needle (HL 787, 788) 3 to 4 mm 1.0 to 1.5 mm right looper approx. N left looper + 5 needle thread approx.
ceDa sewinc ooi is used for cc•oars ogether or or cc rro ha- ochine; eec so:; rg: Neec c: se at N nsert right needle N (witc upper knife engaged) .5 to 2.0 mm righz looper + 2 to ± 2 to iett looper needle thread 1 ec — 5 ‘3 “7’ too! and set needle ccseo screv’ 3 and adjust guide a aa ihat during sewing the •rece ;enera!ss as close to thee e lace and the fabric underne --H Tighten screw 3. -o sewing the lace on the fabric, it through guide 2 alor.
I I I Specifications: Maximum sewing speed Seam width Stitch length Sewing foot Lubrication Sewing foot height Needle system Needle size Number of threads Dimensions Weight . . 1,300 stitches/mm. 3-7.2mm 1—4mm Hinged Manual 5mm 130/7O5Horl5xl H 75—9Oorll—14 2,3,4 315x280x330mm 8.
