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UCTIONS IMPORTANT SAFETY INSTR for HOUSEHOLD use only. This sewing machine is designed and manufactured When using an electric appliance, basic safety precautions should always be followed, including the following Read all instructions before using this sewing machine DANGER To reduce the risk of electric schock: 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. 2.
Contents Controls of the sewing machine Accessory box Electrical connection Main switch and sewing light Foot control Notes on safety Handling the thread spool stand Thread guides behind the carrying handle Opening the looper cover and the swingout work support Threading diagram on waste box Threading thread guides 2 and 34 Needle combinations Threading the right looper Threading the left looper Threading the chainstitch looper Threading the needles Needle threader Thread reel change with machine threaded F
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__________ __________ __________ _ Controls of the sewing machine 1 Thumbwheel for sewing foot pressure 2 Thread guides with colour markings 3 Carrying handle 4 Thumbwheel for left needle thread tension 5 Thumbwheel for right needle thread tension 6 Thumbwheel for right looper thread tension 7 Thumbwheel for left looper thread tension 8 Thumbwheel for chainstitch looper tension 9 Thread tension cover 10 Knife guard 11 Handwheel and stitch length adjustment 1 2 Looper cover 13 Loopercover opening recess
Accessory box Fully open work support 15 and take out the accessory box. The accessory box can only be inserted in its compartment as shown in the illustration. The guide groove of the box must face downwards. Electrical connection This machine must only be used on a flat and even surface or on a special sewing table. Connecting foot control 26: Insert plug 27 of the control in machine socket 23, then connect mains plug 28 to the mains socket.
Switching the machine on and off Both power and sewing light are swit ched on and off with main switch 24. 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 further you press the foot control, the faster the machine will sew. Electronic foot control The maximum speed can be preselec ted in two stages by the switch on the foot control.
Handling the thread spool stand Pull thread spool stand 21 as far as it will go in the direction shown by the arrow. Fully extend telescopic thread guide bar 38. Slowly turn the two upper telescopic sections until you hear their arresters snap in place. After use, fold up telescopic thread guide bar 38. Push thread spool stand (with or without spools) fully against the machine. Thread guides behind the carrying handle Swing carrying handle 3 upwards as shown by the arrow.
Opening and closing looper cover and work support Push looper cover 12 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 15, push it in the direction shown by the arrow. To close the work support, push it lightly until it locks. Selecting stitch types Stitch types 1 to 8 are illustrated on the machine behind the looper cover. The needle combinations (A, B and C) and the thread tensions used are colourcoded.
Threading thread guides 2 and 34 Place thread spools on the spool pins. Threading must be done carefully. First thread up guides 2 according to colours. Then lift carrying handle 3 and place the thread in rear guides 34. Set the thread tensions at N and thread the machine in the following sequence: 1. right looper (red) 2. left looper (yellow) 3. right needle (green) 4. left needle (blue) Fold carrying handle 3 down again.
Threading the right looper Thread the right looper in sequence 1 to B and pull about four inches of thread through the looper eye. The thread path is marked in green in the threading diagram on the rear side of the waste box. Important: In order to achieve perfect sewing results, the thread must be pulled between the tension discs during threading. Note: Changing a spool with the machine threaded Cut the threads off close to the thread spool. Place new thread spools on spool holders 22.
Threading the left looper Thread the left looper in sequence 1 to 10 and pull about four inches of thread through the looper eye. The threading path is indicated in yel low in the threading diagram on the rear side of the waste box. L Important: In order to achieve perfect sewing results the thread must be pulled bet ween the tension discs during threa ding. Note Changing a spool with the machine threaded Cut the threads off close to the thread spool.
Threading the chainstitch looper Thread the chainstitch looper in sequence 1 to 9 and pull about four inches of thread through the looper eye. The threading path is marked mauve in the threading diagram on the rear side of the waste box. Important: In order to achieve perfect sewing results, the thread must be pulled bet ween the tension discs during threa ding. Note: Changing a spool with the machine threaded Cut the threads off close to the thread spool. Place new thread spools on spool holders 22.
Threading the needles Threading the chainstitch needle (A> Carry out threading for the chainstitch needle in sequence 1 to 7. The threading path is marked blue (tri angular symbol). Threading needle B or C (with or without needle A). Carry out threading for the overedge needle in sequence 1 to 6. The threading path is marked pink (dot symbol). Threading overedge needles B and C (without needle A). Carry out threading for the overedge needle in sequence 1 to 6.
Needle threader (accessory) Lower the sewing foot using lifting lever 20. Turn the hand wheel until right looper 31 is positioned right of the needle. Place the thread in slot A of the needle threader and tauten it a little, holding the needle threader turned a little to the front. With the needle between the two guide lugs B, move the needle threader slowly downwards at the rear side of the needle until the small hook C enga ges in the needle eye (middle illustra tion>.
After threading, close work support 1, fold down carrying handle 2 and close looper cover 3. Fitting the waste box Insert the tonues of the box in the cutouts on the front cover. Seam depth graduations: Application example: If the seam allowance of a cut part is 20 mm, the edge of the butting must be guided along the 20 mm graduation on knife guard 10. Press the waste box downwards against the front cover until it snaps in place. Rmoval of the waste box is carried out in the reverse order.
Thread regulator Depending on the stitch type, regulator 41 must be set in position R or N. Position R is for all rolledhem seams. Position N is for all other seams. How to use thread regulator 41: Pull regulator 41 outwards and push it downwards to position R until it snaps n (see ill.). Pull regulator 41 outwards and upwards until it snaps in (see ill.).
Sewing test After threading, a sewing test should be carried out. Raise the sewing foot with lifting lever 20 as shown in the illustration. Hold the thread ends with your left hand and turn the hand wheel with your right hand in the direction indica ted by the arrow on the wheel. Hold the threads taut and place them back under sewing foot 18. Place in the test fabric against upper knife 14 and lower lifting lever 20. Make sure the threads interloop cor rectly during sewing (thread chain).
Points to remember during sewing! Sew the first stitches sIowy. If the machine has been rethreaded, place the fabric under sewing foot 8 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 use thread cutter 42 it is necessary to sew beyond the end of the seam. Draw the resulting thread chain through the thread cutter from the rear (see bottom illustration).
Adjusting the sewing foot pressure: Setting ,,N” of thumbwheel 1 is the standard sewing foot pressure. If very thick fabrics are to be sewn, set the thumbwheel at ,,4’. For very thin fabrics set the thumbw heel at ,,1”. Upper knife lock Sewing very thick fabrics in different ply thicknesses: This machine can sew all kinds of fabric from very light to very heavy.
Setting the standard thread tension Optimum seam appearance depends on the type of fabric used and on the thread size. The correct tension is set after checking the thread interloop see pages 20 to 24). Set ,,N” on the thread tension thumbwheels at the corresponding colour symbol. If needle A (only for chainstitch) is in use, ,,N” must be set at the blue triangular symbol. The mauve tension setting is only used for chainstitch (triangular symbol).
Chainstitch Set regulator 41 at N (see page 1 5). Stitch type 1 sewn with needle A Thread tensions: blue = triangular symbol mauve = triangular symbol Application example: Joining linen- or jeans parts without serging. 5-thread safetystitch seam (narrow) Set regulator 41 at N (see page 15).
4-thread overedge seam Set regulator 41 at N (see page 15> Stitch type 6 sewn with needles B and C Thread tensions: blue = dot symbol pink = dot symbol green = dot symbol yellow = dot symbol Application examples: For sewing and serging all types of fabric, especially suitable for stretch fabrics. 2-thread overedge seam Set regulator 41 at N (see page 1 5).
Correcting the Thread tensions: The thread tensions can be set from —5 to +5. The tension is set at the minus range or plus range according to the seam appearance. Towards + Towards — = = stronger tension weaker tension Chainstitch The thread tension of needle A is too weak. The blue tension must be turned towards +. Note: For 2-thread overedge seams please see page 27. 3-thread overedge seam (wide) The thread tension of needle B is too weak. The pink thread tension must be turned towards +.
3-thread overedge seam The left looper thread is too tight (yel low tension) or the right looper is too loose (green tension). It is possible that both tensions are incorrectly set. Adjust tensions accordingly. 4-thread overedge seam The left looper thread is too tight (yel low tension) or the right looper thread is too loose (green tension). It is possible that both tensions are incorrectly set. Adjust tensions accordingly.
4-thread overedge seam The thread tension of needle C is too weak. The pink tension must be turned towards +. 4-thread overedge seam The thread tension of needle B is too weak. The blue tension must be turned towards +. 5-thread safetystitch seam Since the 5-thread safety stitch seam consists of a chainstitch seam and a 3-thread overedge seam, the correc tion of this seam is not described again (see pages 22 and 23>.
3-thread overedge seam Set regulator 41 at ,,N” (see page 1 5) The 3-thread overedge seam is sewn with two looper threads and one needle thread (needle change see page 40). Changes of seam width made on adju sting knob 35 (2.5 to 5 mm) only apply to needle C. If needle B is used, the setting is increased by 2.2 mm (seam width 4.7 to 7.2 mm). 3-thread overedge seam Needle B Needle C Standard seam width N Standard seam width N i__• Li 5,7 mm Max.
Engaging and disengaging the con verter Hand wheel 11 must be set as shown in the illustration. Set 2 at the marking line on the hou sing. Before you work with converter 40 the right looper thread must be cut and unthreaded from the looper eye. All seams with converter 40 are only sewn with left looper 32 and one or two needles (see page 27). 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 illustra tion.
2-thread overedge seam Needle B Needle C Standard seam width N Standard seam width N El ,5 m Setting range 4,7 to 7,2 mm top side B Setting range 2,5 to 5 mm underside top side underside This illustration shows a 2-thread ove redge seam with correctly set thread tensions. Regulator 41 must be set at N (see page 15). Possible correction of thread tenions: 1. Looper thread A is too loose (yellow thread tension). 2. Needle thread B is too tight (blue or green thread tension>. 3.
Thread chart for 5-thread safetystitch seam Fabric weight Fabric Stitch type Stitch length Thread Cotton: Size 80 100 Synthetic Size 70 140 2 to 3 mm Cotton: Size 80 100 Silk Size 80 100 Synthetic Size 70 140 3 to 4 mm Cotton: Size 60 100 Silk Size 50 100 Synthetic Size 70 140 2 to 3 mm Overedge stitch Cotton Size 60 100 Silk Size 50 100 Synthetic Size 70— 140 3 to 4 mm Chainstitch stich Cotton: Size 40 60 Silk Size 40 60 Synthetic Size 70 140 2 to 4 mm — Chaindtitch — Light fabrics Org
Thread chart for 2-, 3- and 4-thread overedge seams Lighth fabrics: Organdy, lightknits, silk, lining fabrics Medium-heavy fabrics: Cotton, light-knits, linen, dress fabrics Heavy fabrics: Tweed, jacket fabrics, denim, heavy cloth Stitch length Thread Fabric Cotton Silk Synthetic Size 80 Size 80 Size 70 Cotton Silk Synthetic Size 60 Size 50 Size 70 Cotton Silk Synthetic Size 40 Size 40 Size 70 Cotton Silk Synthetic Size 40 Size 40 Size 70 Polyester Texturized (bulk thread) Size 120 — — —
Setting the stitch length Still holding pushlock 39 (see page 29), now turn hand wheel ‘Ii to set the required stitch length at mark A. The stitch length settings range from 1 mm to 4 mm. The numbers on the hand wheel indicate the stitch length in mm. When you have set the required stitch length, release pushlock 39 again. Please note: The hand wheel cannot be turned beyond stitch length 1 or 4.
Adjusting the differential feed The differential feed prevents interply shift. It consists of two feed dogs, arranged one behind the other, which simultaneously take hold of the workpiece and move it. 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. Due to this, very good sewing results are achieved. Set the differential feed according to the material you wish to sew (see table on page 32).
This table indicates possible settings of the differential feed. Carry out a sewing test to find out the correct setting for your fabric. The differential feed can also be set during sewing.
Converting the machine to chain stitch, stitch type 1 Remove waste box 25, see page 14. Open looper cover 1 2 a little and pull off knife guard 10 upwards. Insert needle A (see page 40). Note: For sewing with chainstitch at a hem width greater than 9 mm. upper knife 14 and right looper 31 must be disen gaged. Insert the fabric guide plate (see page 34). Disengaging the upper knife Set the upper knife at its highest position by turning the hand wheel.
Inserting the workpiece guide plate Open work support 1 5 a little. When inserting the workpiece guide plate, make sure it is level with the needle plate. Close the looper cover and the work support. Now the chainstitch seam can be sewn! Set the edge guide to the required hem width. Note: If the fabric guide plate is in use, the overedge looper (righthand looper 31) must be disengaged. After sewing chainstitch seams, carry out the following instructions on the machine: Open the looper cover.
Adjusting the seam width The standard seam width settings N for the different needles are: 3.5 mm for needle C 5.7 mm for needle B 7.5 mm for needle A Disengage upper knife as described on page 33. Remove the waste box (see page 14>. The required seam width is set with adjusting knob 35. The graduations on the seamwidth adjusting knob range from 2.5 to 5. Set the upper knife at its basic position again and close the looper cover. Note: The seamwidth settings on adjusting knob 35 (2.
Twothread rolled hems sewn with converter 40: the slide must be set in position A (see page 26). Use right needle Needle: Rolledhem sewing foot R Sewing foot: N (3,5 mm) Seam width: 1,0 to 2.0 mm Stitch length: Set slide 41 at R (see top of page 37) A rolled hem is used for light, delicate fabrics and is an attractive finish for raw edges. Without any effort you can sew professional rolled hems on head scarves, shawls and valances.
Thread regulator Depending on the stitch type, thread regulator 41 is set in position R or N. Position R is for all rolled hems. How to set regulator 41: Pull regulator 41 forward and push it down to position R so that it snaps in (see ill.). 3-thread rolled hem Sewn with polyester thread 100 to 140. A rolled hem is used for light, delicate fabrics and is an attractive finish for raw edges. Without any effort you can sew professional rolled hems on head scarves, shawls and valances.
Rolled hem with polyester thread (Figs. 1 and 2, page 37, bottom) Preparation of the sewing machine: Remove needles A and B Needle: Fit rolled hem foot ,,R” Sewing foot: From 2.5 to 3.0 mm (depending on material) Seam width: From 1 .5 to 2.5 (short stitch length) Stitch length: Polyester 1 00 to 140, for pink, green, and yellow thread tensions Thread: Threading path: 1. Right looper, green path 2. Left looper, yellow path 3.
Changing the sewing foot Disengage the sewing foot. hol Push in lever F on the sewing foot The n. tratio illus the in n show der as sewing foot disengages. F Engaging the sewing foot. sewing Place the sewing foot under the r the foot holder so that when you lowe in lifting lever, crosspiece G engages er. hold foot ng sewi the of H groove H This illustration shows a correctly engaged sewing foot.
Changing the needles Pull out the mains plug. Lower the sewing foot. Turn the hand wheel as shown by the arrow to set the needle bar in its highest position. Hold the needle to be changed with the twee zers. Loosen set screws A, B or C with the small screwdriver. Remove the needle from the needle holder by pul ling it downwards. Inserting the needles The flat side of the needle shank must face the rear.
Changing the lower knife Pull out the mains plug Disengage the upper knife (see page 33). Take out retaining screws 30 of lower knife 29. Set seamwidth adjusting knob 35 at 2,5 (smallest seam width). Inserting the lower knife Push the new lower knife from below into the groove of the knife holder. The cutting edge must face right. Tighten retaining screw 30 together with the pressure plate. Position the cutting edge of the lower knife so that it is flush with the surface of the needle plate.
Changing the upper knife Pull out the mains plug Disengage the upper knife, see page 33. Take out upper knife retaining screw 44 and remove the knife. Insert the new upper knife and tighten its retaining screw 44 just a little. Set the upper knife at its working posi tion. Turn the hand wheel unti the upper knife has reached its lowest point. In this position, the front edge of the upper knife must be 0.5 to 1.0 mm lower than the cutting edge of the lower knife.
Changing the light bulb Pull out the mains plug. Loosen housing cover retaining screw 43. Open the sewing light housing cover. Behind it, the bulb of the sewing light is located. Removing the tight bulb: Push the light bulb upwards and turn it in direction 1. Inserting the light bulb: Insert the new bulb (1 5 Watt max.> with its pins in slots 3, push it up and turn in direction 2. Close and fasten housing cover. Cleaning the thread tensions Fold the thread tension cover down wards.
Stitch selection table The values set for thread tension, stitch length, needle size, and the differential feed setting are only basic settings that have to be varied according to the application, i.e. to the type of fabric, fabric thickness, and thread used. The Sewing foot must be selected according to the seam width (see ill, at right). The differential feed setting depends on the type of fabric sewn (see page 31). This stitch selection table lists all stitch types that can be sewn with this machine.
Sewing foot N 3 for seam widths of 3 to 4,5 mm Sewing foot N for seam widths of 4 to 6 mm Sewing foot N 2 for seam widths of 5,5 to 7,2 mm Rolled hem sewing foot R
Stitch type Fabric (s. p.
L17
Fabric (s.p.
617
Stitch type 2-needle 3-thread overedge closing seam without edge thread 5tf!5\ Fabric (sp. 28 and29( light medium Needle thread tension N N N blue pink green 1 — yellow mauve —1 —1 —2 N medium -1 N -2 N N N N N 1 — A B c B C 90 14 90 14 N or N (see tc of page 4 90 14 90 14 N or N (ee to of page 4 90 14 NorN (see tc of page 4 —1 light — A 1 — N light N 5 + 1 N .
Sewing problems and their remedies This machine has 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 adjustmentand operation errors. They can easily be corrected if you follow the instructions listed below.
Problem Cause Remedy Machine does not run although main switch is on Power suooly interrupted Close looper cover 12 or work support 15 (see page 7) (pp. Fabric not neatly trimmed Sewing lint between upper and lower knife Upper knife blunt Clean knives (see page 54).
Cleaning the knives Oiling the machine: Disengage the upper knife (see top of page 33. Every time you use the machine, apply a little oil to the places indicated. The bushes and other important moving parts are made of special material and need oiling only once or twice a month. One or two drops of PFAFF sewing machine oil are sufficient. Use the lint brush (accessories) to remove lint from upper and lower knife.
Accessories 1 2 3 4 5 6 7 8 9 10 11 12 13 2 3 Screwdriver (big) Screwdriver (small) Lint brush Tweezers Upper knife Thread unreeling disc Needles Sewing machine oil Rolled hem sewing foot (R) Sewing foot N2 Sewing foot N3 Thread spool net Needle threader Special accessories, see pages 56-62 Elastic tape sewing foot Part No. 29-924 993-67/100 4 6 Taping foot Part No. 29-924 993-70/904 Blindstitch sewing foot Part No. 29-924 993-68/100 Bead sewing foot Part No.
Thread spool net Very useful for synthetic threads which tend to 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 37 from the thread reel pin. Place the thread spool on the reel pin and the thread unwinding disc on top of it, with roundedoff section C facing down, as shown in Fig. B.
Stoff Perlen mm 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 only. 1. Set thread regulator 41 at N 2. Set differential feed at — 3. Insert bead sewing foot 4. For small beads use the needle C For large beads use the needle B 5. Push the bead tape throught guides 1 and 2 to the end of the foot (Fig. 1). 6.
Elastic tape sewing foot This special foot is for sewing on ela stic tape; in the same operation the fabric is trimmed and serged, and also gathered by the contracting elastic tape. Preparing the machine Set thread regulator 41 at N Differential feed setting: Needles: Sewing foot: Thread tension: Stitch width: Stitch length: set at use 1 or 2 needles, depending on tape width insert elastic taping foot N 4 to 4.5 approx.
Taping foot 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. Preparing the machine Set thread regulator 41 at N 2 3 Differential feed setting; Needles; Stitch width; Stitch length; Thread tension; set at use 1 or 2 needles, depending on tape width 3 to 5 mm (adjustable for a tape width from 4 to 9 mm) N N — Inserting the tape 1. Set needle at highest position. 2. Disengage upper knife. 3.
Cording foot This special sewing foot is used for sewing a cording tape between two fabric plies in one operation. Preparing the machine Set thread regulator 41 at N Differential feed setting: set at Needles: B and C or B Sewing foot: hgage cording foot Upper knife: engaged Thread tension: N Stitch width: 3 to 5 Stitch length: N — Inserting the fabric plies 1 Raise the sewing foot 2. Set needle at its highest position 3.
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 thread regultor 41 at N. Differential feed setting: Needle: Stitch width: Stitch length: Thread tension (see section on rolled hems) set at insert needle C 3 to 4 mm 1.0 to 1.5 mm — right looper approx N left looper+ 5 needle thread approx.
Lace sewing foot This special sewing foot is used for sewing lace or borders together or on the workpiece. Preparing the machine: Set thread regulator 41 at N. Differential feed setting: set at Needle: insert needle C Stitch width: N (with upper knife engaged) Stitch length: 1.5 to 2.0 mm Thread tension: right looper + 2 to + ‘ left looper+ 2 to + 4 needle thread 1 to 4 Sewing on lace 1. Raise sewing foot and set needle up. 2.
Specifications: Maximum sewing speed Seam width Stitch length stitches/mm. 3-7.2mm —4mm(HL788) 1 5 mm (HL 787) system Manual — Sewing foot Lubrication,..... Max. sewing foot height Needle system Needle size Number of threads Dimensions Weight . . . . . 75-90or1114 2,3,4,5 315x280x330mm approx. 8.
PFAFF G. M. Pfaff A kt len g ese I I sc ha ft Werk Karisruhe-Durlach Gritznerstrae 11 7500 Karlsruhe 41 Printed in West Germany Druckerel Gablenc GmbH 7504 Weingarten Stettiner Stralte 17 Subject to alterations in design.
