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Question posted by vickiathome on September 16th, 2020

Needle Shaft Set Screw

I lost the set screw that holds the needles to the needle shaft. Could you please tell me the type or dimensions of the screw so that I can find a replacement?Thanks so much@@

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Answer #1: Posted by Troubleshooter101 on September 16th, 2020 5:24 AM

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Please check this website link below which will be able to provide you the relevant parts for the machine.

https://www.sewingpartsonline.com/instruction-manual-pfaff-hobbylock-797.aspx

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Related Pfaff hobbylock 797 Manual Pages

Owner's Manual - Page 2

... parts or accessories, the machine must take sufficient care to avoid injury and observe the sewing area continuously while sewing. Notes on safety A) Owing to the up and down movement of the light bulb is 15 watts. C) The maximum approved wattage of the needle, the user must be adjusted by anyone but an authorized...

Owner's Manual - Page 3

contents Controls of the sewing machine Accessory box Electrical connection Foot control Installing the thread spool stand Threading diagram on the lint box Needle combinations Threading the right looper Threading the left looper Threading the two-thread chainstitch looper Threading the needles Inserting the lint box Setting the standard thread tension Sewing test Points to observe during...

Owner's Manual - Page 5

... Lower knife 30 Knife clamp screw 31 Right looper 32 Left looper 33 Two-thread chainstitch looper 34 Thread guides behind the carrying handle 35 Seam width adjustment knob behind work support 15 27 31 Controls of the sewing machine 1 Foot pressure regulating dial 2 Thread guide 3 Carrying handle 4 Left needle thread tension dial 5 Right...

Owner's Manual - Page 9

... it locks. To close the looper cover, push it up until it locks. The respectively necessary needle combinations (A, B. and C) and the thread tensions to be engaged or disengaged (see page 29>..... The color markings of the lint box The right-hand side shows the stitch types (1-6) with the respective set screws is shown. To open the work support Push looper cover to the right and swing...

Owner's Manual - Page 10

... the corresponding guides and tension discs. Remove the needles that are indicated. Chainstitch looper (mauve) 4. Needle thread tension (blue) 5. Diagram C shows threading of the thread guides behind looper cover 12, the needle combinations for stitch types ito 6 are not necessary by loosening set screws A, B, or C (For needle change, see page 35.) - Threading procedure Threading must...

Owner's Manual - Page 19

...the seam: Knot the thread chain. On this machine, all kinds of the upper knife holder must be processed. Explanation: The screw of the upper knife holder serves to extremely thick ... 17 When sewing thin or medium fabrics, the screw of fabric from extremely thin to tighten or loosen the horizontal guide of seam. Or: Sew about 2 turns. For knit fabrics, a crochet needle can be ...

Owner's Manual - Page 22

... thread tensions: The tension range of needle B is too weak. The blue thread tension must be turned in direction +. 3-thread ... The thread tension of the seam, the thread tension must be turned in direction +. Depending on the appearance of needle A is too weak. Needle thread B or C Left looper thread Right looper thread 3-thread overedge seam (narrow) The right looper thread is ...

Owner's Manual - Page 24

... dial at 4. The pink thread tension must be turned in direction +. Needle thread C 4-thread overedge seam The thread tension of needle C is the standard sewing toot pressure. thread B Sewing foot pressure Position N on the regulating dial is too weak. For very thin fabrics, set the regulating dial at 1. 4-thread overedge seam The thread tension of...

Owner's Manual - Page 31

...c. ostnq ttw marh!ne for two tflead ha sttch seams. stitch type 1 i ye nt ho o e age 13 open ocr vr ... tcv' kr°ie etanrg oi or :e uuer nfe hoaer o o or jht O 00t pnrp se Inc screw oPr K ft hhle mInt he 1)055 s o c t r t nrurledkrob ckv j t ' nfe °...0 01 tne Jrr1 -Otn 0 to Insert needle A. t the ci e t ts lowest postion ru C oh • I c mcnr cer. Puit ne 10 forward to ...

Owner's Manual - Page 32

...sewn I After sewing the two-thread chainstitch seam, the following adjustments must be made to 6. Pull the looper disengageing lever fully forward and turn it is level with the needle plate. Move the... support 15 a little. Then open the work support. Turn the hand wheel until the needle is engaged again. Inserting the workpiece guide plate Open work support and insert the lint box...

Owner's Manual - Page 36

...left looper Pink thread tension, needle thread approx. Thread:bulk thread - Tension setting: round edge, Fig. 1 flat edge, Fig. 2 Green thread fensiun, right looper Yellow thread tension, left looper, yellow path 3. "N" approx. 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...

Owner's Manual - Page 37

... as it downwards. Turn the hand wheel in the direction of the needle shank must face rear. Tighten the needle set screw of the needle with the tweezers. An incorrectly inserted needle will go. Hold the needle to be changed with the screw driver. Loosen the set screw. Inserting the needle Set the needle bar at its highest position. Using the tweezers, push the...

Owner's Manual - Page 38

After accurate adjustment of the needle plate. -j - Set the knife so that the cutting edge aligns with the cutting edge facing right. Push the upper knife fully to operative position. Loosen the knife clamp screw and pull the lower knife down. 1 Inserting tower knife: Insert a new knife into the groove of the lower knife...

Owner's Manual - Page 39

Tighten slightly and set the upper knife in this position than the surface of the needle plate. 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 holder. Screw it into threaded hole (2) of the knife...

Owner's Manual - Page 41

The bushings and other important moving parts are made of special material and need to two drops of high-quality sewing machine oil are sufficient for oiling. One to be oiled only once or twice a month. Oiling the machine: Every time before you take the machine into operation, you should apply a little oil to the places indicated.

Owner's Manual - Page 42

... problems developed for light materials) (pages 14, 20, 21, 22). Skipped stitches Needle bent or point damaged. Incorrect needle used . Increase sewing foot pressure. Insert new needle. Re-adjust differential feed. Needle not fully inserted. Incorrect stitch formation trect setting of threadj Set thread tensions correctly tensions. (pages 14, 20, 21, 22). Reduce thread tension (espe cially...

Owner's Manual - Page 43

3 4 5 /___) 8 0 9 - Specifications: Highest sewing speed Seam width Stitch length Sewing foot Lubrication Needle system Needle size Dimensions Weight 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 ...

Owner's Manual - Page 44

... the prepared hem under guide -2-, Folded edge -4- Loosen regulating screw -1- Useful for synthetic thread which tends to become loose, unravel and slip down. 2 1, 3 Sewing foot for blind-hemming operations Prepanng the sewing machine Differential feed setting: set at - (see page 27) Needle: remove needles A and B Sewing foot: engage blind-hemming foot Seam width: "N" Stitch length...

Owner's Manual - Page 45

...7. 8. Stitch length: 3 to 4 mm Determine the proper thread tension by sewing a trial seam (N = standard setting) Note: If the pearl tape is possible to sew to 1.5 mm from the fabric edge (see page 27). 2. knife; 6. Engage pearl sewing foot. 3, For small pearls, remove needle B. 4. 5. tapes and 1. Set differential feed at - ,see Fig. 2). - 43 be used within the...

Owner's Manual - Page 46

... the rear under the foot. upwards. Insert elastic tape and place it to 4.5 mm Stitch length: approx. 4 mm Elastic tape insertion: Loosen screw -2- With the sewing toot in , the more screw -2- Preparing the machine: Differential feed setting: set at the same time the material is gathered and the excess fabric cut off. Tighten brake -1- again with...