Instruction/ maintenance manual of the product hobbylock 797 Pfaff
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Notes on safety A) Owing to the up and down movement of the needle, the user must take sufficient care to avoid injury and observe the sewing area continuously while sewing. B) When leaving the machine, changing parts or accessories, the machine must be disconnected from the power source.
contents Controls of the sewing machine 2, 3 Accessory box 4 Electrical connection 4, 5 Foot control 5 Installing the thread spool stand 6 Threading diagram on the lint box 7 Needle combinations 8 Thr.
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Controls of the sewing machine 1 Foot pressure regulating dial 2 Thread guide 3 Carrying handle 4 Left needle thread tension dial 5 Right needle thread tension dial 6 Right looper thread tension dial .
I Accessory box Open the work support and pull out the accessory box. To replace the accessory box, slide it into the grooves and push it in as far as it will go. The accessories are illustrated on page 41. Electrical connection Use this machine only on a flat surface or on a special sewing table.
Switching the machine ON and OFF 1 Power and sewing light are switched on and off simultaneously with the master switch. Foot control The speed of the Hobbylook is regulated as follows: The more you p.
Installing the thread spool stand Loosen clamp screw a little and pull washer up to the screw head. Insert thread spool stand from the top. thread spool holders. Push the thread guiding part into the guide bar. Pull up guide bar and align it so that the Tighten clamp screw.
• Opening and closing looper cover and work support Push looper cover to the right and swing it down. To close the looper cover, push it up until it locks. To open the work support, push it to the left. To close the work support, push it to the right until it locks.
Threading procedure Threading must be done correctly to obtain a well-formed seam. Thread the machine in the following sequence: 1. Right looper (green) 2. Left looper (yellow) 3. Chainstitch looper (mauve) 4. Needle thread tension (blue) 5. Needle thread tension (pink) Diagram B shows threading of the thread guides behind the carrying handle.
Threading the nght looper: Thread the right looper in sequence 1 to 9 and pull approximately 10 cm (4”) of thread through the looper eye (the thread path is marked green). Important: In order to obtain perfect sewing results, the thread must be pulled between the tension discs when threading the tensions.
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Threading the needles The needles must be threaded in sequence blue — pink. Threading the two-thread chainstitch needle (A): Thread the two-thread chainstitch needle in sequence 1 to 7.
Now close the work support (1), push the handle down (2) and close the looper cover (3). Inserting the lint box: Insert the tabs of the lint box into the slots (4) of the front cover. Seam depth scale Example: If the seam depth of the cutting is to be 20 mm, the cut fabric edge must be guided along the 2Omm mark on knife guard 10.
Setting the standard thread tension The thread tension to be set depends on the fabric type and thread size used. Make the correct adjustment after examination of the interlocking of the threads (see pages 18 to 22). Set the N on the thread tension dials opposite the respective color symbol.
Sewing test After threading, a sewing test test should be made. Raise sewing foot lever 20. as shown in the illustration. Insert test fabric up to the upper knife and lower the sewing foot. Hold thread ends with your left hand while turning hand wheel with your right hand in the direction ndicated by the arrow.
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Securing the seam: Or: Knot the thread chain. For knit fabrics, a crochet needle can be used to pull the thread chain into the seam. Sew about 5 cm (2) beyond the end of seam. Then turn the workpiece around and sew a few stitches over the seam just sewn without cutting the thread chain.
Face side I I Two-thread chain- stitch top side I I Two-thread chainstitch Stitch type 1. sewn with needle A Thread tensions: blue = triangular symbol mauve = triangular symbol Application examples: Joining seams on linen goods, jeans, without serging seam.
Face side 3-thread overedge seam Overedge stitch top side Overedge stitch underside —jz: — J top side Overedge stitch • underside Reverse side Stitch type 4, sewn with needle C (narrow) Stitch t.
Incorrect thread tensions: The tension range of the thread tensions lies between —5 and +5. Depending on the appearance of the seam, the thread tension must be turned in the — or +range. Direction + = ncreased tension Direction — = decreased tension Two-thread chainstitch The thread tension of needle A is too weak.
3 thread overedge seam e c: ooper Thread a t o tight (ye flow son) nr e ght ooper thread s too I oce rqren tenson). It a also possible t at cc tb tensor a are ncorrectly set.
Needle thread C 4-thread overedge seam The thread tension of needle C is too weak. The pink thread tension must be turned in direction +. thread B 4-thread overedge seam The thread tension of needle B is too weak The blue thread tension must be turned in direction +.
3-thread overedge seam 3thread overedge seam Needle Needle B Needle C Thread tension Marked pink Marked pink Pull thread behind thread retainer and thread guide wire. I l Standard seam width Maximum . 72mm 5mm seam width Threethread sewing is possible by using either only needle B or needle C (see page 12).
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Thread chart for 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.
h 1/7 Adjusting the stitch length With the main feed dog stop pressed down, set the stitch length (ito 4) indicated on hand wneel 11 opposite mark A The standard stitch length is indicated oy N (3 mmt Note: the handwheel can not be turned past stitch length numbers 1 and 4, respectively.
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. It is possible to have the workpiece moved more by the front feed dog than by the rear one and vice versa.
is table indicates possible settings of the differential feed. In order to make sure about the setting iuired for the fabric you wish to process. a sewing test has to be made.
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Inserting the workpiece guide plate Open work support 15 a little. When inserting the workpiece guide plate, make sure it is level with the needle plate.
Adjusting the seam width The standard seam width setting is marked with N (3.5 mm). Disengage the upper knife according to the description on page 29. The desired seam width is set with adjusting knob 35. The scale on the seam- width adjustment knob ranges from 2.
Changing the sewing foot Disengage the sewing foot. Push in lever F at the sewing foot holder as shown in the illustration. The sewing foot disengages. Engage the sewing foot. Place the sewing foot under the sewing foot holder so that when you lower the sewing foot lifting lever, crosspiece G engages in groove H of the sewing foot holder.
Face side Reverse side Rolled hem sewn with polyester thread 100—140. A rolled hem is used for light, delicate fabrics and is an attractive finish tor open edges. Without any effort you can sew professional rolled hems on neck scarves, shawls and valances.
Rolled hem with polyester thread (ill. 1 and 2, page 33) Preparation of the sewing machine: Needle: remove needle A and B Sewing foot: engage rolled hem foot ‘R” Seam width, from 25 to 3.
Changing the needles Pull out the mains plug. Turn the hand wheel in the direction of the arrow until the needle bar is in its highest position. Hold the needle to be changed with the tweezers. Loosen the set screw of the needle with the screw driver.
— j Loosen the knife clamp screw and pull the lower knife down. Inserting tower knife: Insert a new knife into the groove of the lower knife holder with the cutting edge facing right. Set the knife so that the cutting edge aligns with the surface of the needle plate.
Changing the upper knife: Pull out the mains plug. For disengageing the upper knife, see page 29, L Unscrew the knife retaining screw and remove upper knife, To replace the upper knife, insert the retaining screw through cutout (1) of the knife. Screw it into threaded hole (2) of the knife holder.
Removing the light bulb: Push the light bulb upwards and turn it in direction 1. Inserting the light bulb: Insert the new bulb (15 Watt max.) with pins into slots 3, push it up and turn in direction 2. Close and fasten housing cover. Cleaning thread tensions: Fold the tension cover down.
Oiling the machine: Every time before you take the machine into operation, you should apply a little oil to the places indicated. The bushings and other important moving parts are made of special material and need to be oiled only once or twice a month.
‘ing prob’ems and solutions se machines have been developed for easy operation, and there are no difficult adjustments to iiade. Sewing problems of the kind described below may occur due to minor adjustment- and ration errors. They can easily be corrected by following the instructions below.
Accessories 1 Screwdriver 2 Screwdriver 3 Lint brush 4 Tweezers 5 Lower knife 6 Thread unreeling disc 7 Needles 8 Sewing machine oil 9 Rolled hem presser foot 10 Thread spool net (see page 42) Optional accessories, see pages 42 to 44, available against extra charge Blindhem foot Part No.
Thread spool net. Useful for synthetic thread which tends to become loose, unravel and slip down. Sewing foot for blind-hemming operations Prepanng the sewing machine Differential feed setting: set at.
pearls 1—1.5mm needle B j Pearl sewing toot (Fig. 1) This special foot is used for attaching pearls, spangles, strass tapes, lead tapes and cords. These sewing operations are carried out with needle B or C only. 1. Set differential feed at — ,see page 27).
1 E Sewing foot for tape attaching operations This special sewing foot allows elastic tape attaching in one operation; at the same time the material is gathered and the excess fabric cut off.
PFAFF-HANDELSGESELLSCHAFT für Haushaltnähmaschinen m.bH. Subject to technicai ajterabons. Prjnted jo West Germany. 7500 Karlsruhe 41 West Germany DrNr,3O163RD7/89.
An important point after buying a device Pfaff hobbylock 797 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Pfaff hobbylock 797 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Pfaff hobbylock 797 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Pfaff hobbylock 797 you will learn all the available features of the product, as well as information on its operation. The information that you get Pfaff hobbylock 797 will certainly help you make a decision on the purchase.
If you already are a holder of Pfaff hobbylock 797, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Pfaff hobbylock 797.
However, one of the most important roles played by the user manual is to help in solving problems with Pfaff hobbylock 797. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Pfaff hobbylock 797 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
