Pfaff hobbylock 4752 Instruction Manual Download Page 51

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Movable up-
per blade

Upper overedge

looper (red)

Lower overedge

looper (yellow)

Standard presser foot

Bed slide for stitch

width latch

Fixed lower
blade

Thread chain cutter

Presser foot lifter

Needle plate

Ridged knob for lowering
the upper blade

Setting knob for
seam width

Parts of the hobbylock 4752

Summary of Contents for hobbylock 4752

Page 1: ...hobbylock 4752 Instruction Manual ...

Page 2: ...adapter Thread spool stand Setting knob for stitch length Foot control plug with power cord Foot control plug with power cord Electrical power master switch Handwheel Setting screw for presser foot pressure Left needle thread tension blue Swivel plate Looper cover Upper looper thread tension red Lower looper thread tension yellow ...

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Page 5: ...as simple to ope rate as this instruction manual is to follow Before you start sewing please take the time to read these instructions carefully It is certainly time well spent and is the best way to find out just what your machine can do and make full use of all its features If you have any further questions just ask your aut horized PFAFF dealer Your dealer is happy to be of service with any help...

Page 6: ...er master switch 7 Foot control 7 8 Handwheel 8 Light bulb sewing lamp changing 41 Looper cover 8 Lubricating the machine 39 Maintenance 38 41 Needle holder 22 Needle plate removing 38 Needle position 23 Needle changing 22 Oiling the machine 39 Presser foot 9 21 Presser foot lifter 9 Presser foot pressure 21 Presser foot changing 21 Program overview 30 31 Safety notes 2 7 Seam guidelines 26 Seam w...

Page 7: ...ng thread guide 9 Thread chain cutter 26 Thread net 9 Thread tensions setting 29 Thread unreeling disc 9 Threading aid for looper thread 13 15 Threading aid for needle thread 16 18 Threading paths overview 0 Threading the lower overedge looper yellow 14 15 Threading the machine 10 Threading the needle s 16 17 18 Threading the upper overedge looper red 12 13 Threading important note 18 Threads and ...

Page 8: ...box Place the accessory box in the waste con tainer Accessories screw driver tweezers thread nets needle system thread unreeling discs wrench looper threading aid cleaning brush needle threading aid machine oil re place ment upper blade lug waste container looper cover groove accessory box waste container ...

Page 9: ...tlet only one way If the plug does not fit correctly into the outlet reverse the plug If it still does not fit contact a qualified electrician to install the proper outlet Do not modify the plug in any way Foot controller type YC 482J 120 V YC 550 230 V YC 551 240 V has to be used with this overlock machine For the USA and Canada This sewing machine has a polarized plug one blade wider than the ot...

Page 10: ...per cover Opening Push the looper cover fully to the right and then swivel it down Closing raise the looper cover and press it towards the machine The looper cover snaps into place automatically Opening and closing the swivel plate Opening press the swivel plate towards the left Closing press the swivel plate towards the right and slightly towards the machine Safety note the swivel plate and the l...

Page 11: ...ad unreel ing disc on top of the spool If the thread jumps off the spool during threading or sewing or if it slips out of the thread tensioners when sewing rolled hems pull the enclosed net over the spool as shown in the illustration In this way you can prevent the thread from jamming Presser foot lifter The presser foot can be raised and lowered using the presser foot lifter The presser foot must...

Page 12: ...10 left needle thread thread guide plate right needle thread upper looper thread thread guides lower looper thread Threading the machine ...

Page 13: ...n the machi ne thread the upper looper thread red first then the lower looper thread yellow the left needle thread blue and finally the right needle thread green Two threading dia grams are located behind the looper cover to help you correctly thread the machine Threads that are threaded incorrectly will lead to irregular skipped stitches broken needles and uneven thread tension There fore always ...

Page 14: ...ng diagrams are located behind the looper cover to help you with the threading Guide the thread from the rear through the second thread guide from the right Guide the thread through the fourth and the third hole from the right on the thread guide plate as shown in the illustration Guide the thread from the right to the left into the left guide 3 guide plate guide 3 for the upper looper thread thre...

Page 15: ... through the eye in the upper looper Then hook the thread end into the looper thread ing aid and pull the latter with the thread through the eye Remove the thread from the looper threading aid and pull on the free thread end until at least 10 cm 4 is showing beyond the eye Lay the thread to the left under the presser foot Close the swivel plate and the looper cover guide 5 for the upper looper thr...

Page 16: ... from the left to the right into the right guide 3 Threading the lower looper yellow Open the looper cover and the swivel plate Place the spool on the second spool pin The guide points for the lower looper thread are marked in yellow Two threading diagrams are located behind the looper cover to help you with the threading guide plate 2 guide 3 for the lower looper thread thread guide 1 ...

Page 17: ...til at least 10 cm 4 is showing beyond the eye of the lower looper Lay the thread to the left under the presser foot Close the swivel plate and the looper cover Feed the thread into the guide 6 for the lo wer looper thread Guide the thread into the take up lever 7 of the lower looper thread Feed the thread into the guide 8 for the lower looper thread Feed the thread into the guide 9 for the lower ...

Page 18: ...thread end into the needle threading aid and pull the needle threading aid with the thread through the needle eye Pull on the free thread end until at least 10 cm 4 is showing beyond the needle eye Lay the thread to the left under the presser foot thread ten sion 3 of the left needle thread cover of the take up lever 4 Threading the left needle blue Place the spool on the left spool pin The guide ...

Page 19: ...ead from the right between the tension discs and pull the thread tight from both sides Threading the right needle green Place the spool on the second spool pin from the left The guide points for the right needle thread are marked in green Two threading diagrams are located behind the looper cover to help you with the threading Guide the thread from the rear through the second thread guide 1 from t...

Page 20: ... at least 10 cm 4 is showing beyond the needle eye Lay the th read to the left under the presser foot Important note on threading The needle s must always be threaded last so that the needle threads do not run under the looper thread as seen in drawing 1 but instead over the looper thread as depicted in drawing 2 Should this sequence not be followed thread breakage or skipped stitches can occur If...

Page 21: ...sition A The seam width is too small there are extra loops Turn the setting knob clockwise The lower blade moves to the right B The seam width is too large the edge is rolling up Turn the setting knob counterclockwise The lower blade moves to the left 5 Move the upper blade to its upper position 6 Close the looper cover and the swivel plate Setting the seam width for rolled hems Programs 05 06 Tur...

Page 22: ...ce effect on knit or bias cut fabrics or to smooth fabric that is being contracted while sewing Setting the differential feed ratio The differential feed ratio can be altered by turning the setting knob The number at the setting mark shows the ratio between the two feed dogs arranged behind each other The normal setting is 1 0 The maximum differential feed ratio 2 0 is only fully effective within ...

Page 23: ... see illustration Removing the presser foot Turn the machine off Raise the needle s to the highest position Raise the presser foot and press the lever at the rear of the presser foot holder The presser foot will be released automatically from the holder Attaching the presser foot Place the presser foot beneath the presser foot holder until the pin of the foot is dir ectly under the presser foot ho...

Page 24: ...right needle Inserting the left needle Insert the new needle into the needle hol der in such a way that the flat side points towards the rear Push the needle upward until it touches the edge of the needle bar Tighten the fastening screw of the left needle If the needles are inserted correctly the position of the left needle should be slightly higher than that of the right needle Do not use bent or...

Page 25: ...3 thread seams with a wide seam width Turn the machine off Remove the right needle and the right needle thread Tighten the right needle fastening screw again slightly so it does not fall out Changing the needle when sewing with th ree threads Undo both needle fastening screws and re move the old needle Insert the new needle as far as it will go and tighten the relevant fastening screw Also tighten...

Page 26: ...e the looper cover and the swivel plate Engaging the upper blade Turn the machine off Open the looper cover and the swivel plate Push the ridged knob for lowering the upper blade to the right and turn it away from you Guide the upper blade over the blocking pin so that the upper blade engages in its upper position again Close the looper cover and the swivel plate ridged knob for lowering the upper...

Page 27: ... again slowly Move the upper blade to its upper posi tion Close the looper cover and the swivel plate stitch width latch setting marks setting knob stitch width latch stan dard seams bed slide rolled hems stitch width latch bed slide Set the bed slide for the stitch width latch to position S The stitch width latch will be pushed forward This setting allows you to sew all types of standard overlock...

Page 28: ...dwheel ca refully a few revolutions towards you and check the thread chain Start sewing slowly The sewing material is fed automatically Guide the sewing material in the desired direction Finishing sewing When you have completed your seam allow the machine to continue to sew slowly until the thread chain has attained a length of ap prox 12 cm 4 3 4 At the same time pull the thread chain gently towa...

Page 29: ... the beginning of the seam 1 Before inserting fabric under the presser foot serge a thread chain of approx 5 cm 2 in length 2 Insert the sewing fabric into the machine and sew 2 3 stitches into the fabric 3 Raise the presser foot guide the thread chain to the left around the presser foot towards the front and lay the thread chain under the presser foot 4 Pull the thread chain slightly taught towar...

Page 30: ...dles Make sure the fabric is not positioned in the path of the upper blade 5 Lower the presser foot sew approx 2 5 cm 1 over the seam and pull the fabric away to the side at an angle sewing off the fabric Stitching the end of the seam 1 Sew 2 3 stitches off the end of your fa bric 2 Turn the needles to their highest position and raise the presser foot ...

Page 31: ...30 705 H PS 130 705 H PS 130 705 H PS 70 80 80 90 80 90 90 Setting thread tension The following pages contain directions for setting thread tensions for all programs Adjust the tension by turning the tensioning wheel until the dot marker is at the desired setting The settings for adjusting thread tension are recommendations Fabric type thread qual ity and needle gauge will influence seam results A...

Page 32: ...am for joining stretch fabrics and decorative finished edges Serging light to medium heavy fabrics Decorative edges Serging light to medium heavy fabrics Decorative edges Joining and simultaneous serging of all fabrics in parti cular stretchy fabrics R L R L R R LR Program 01 Program 02 Program 03 Program 04 Program 05 Program 06 Program 07 3 thread overedge narrow 3 thread overedge wide 3 thread ...

Page 33: ...sion The values refer to medium heavy fabrics and normal polyester thread Stitch length Position of stitch width latch blue green red yellow 3 3 3 3 S 3 3 3 3 S 0 2 3 3 S 0 2 3 3 S 4 3 3 R R 4 3 8 9 R R 3 3 3 3 3 S ...

Page 34: ... the blue thread tension to a higher value The upper looper thread red appears on the underside of the fabric Set the red thread tension to a higher value and or the yellow thread tension to a lower value The lower looper thread yellow appears on the top side of the fabric Set the yellow thread tension to a higher value and or the red thread tension to a lower value Top side Top side Top side Top ...

Page 35: ...alue and or the red thread tension to a lower value The upper looper thread red appears on the underside of the fabric Set the red thread tension to a higher value and or the yellow thread tension to a lower value 3 thread overedge seam progr 01 02 wide blue green red yellow 3 3 3 narrow blue green red yellow 3 3 3 Top side Top side Top side Top side Underside Underside Underside Underside Seam pa...

Page 36: ...he relevant needle thread tension to a lower value The upper looper thread red appears on the underside of the fabric Set the red thread tension to a higher value The lower looper thread yellow is too loose Set the yellow thread tension to a higher value Top side Top side Top side Top side Underside Underside Underside Underside Seam pattern ...

Page 37: ...ars on the underside of the fabric Set the red thread tension to a higher value and or the yellow thread tension to a lower value The lower looper thread yellow appears on the top side of the fabric Set the yellow thread tension to a higher value and or the red thread tension to a lo wer value Top side Top side Top side Top side Underside Underside Underside Underside Seam pattern ...

Page 38: ...d red only partly loops around the fabric edge Set the red thread tension to a lower value and or the yellow thread tension to a higher value The lower looper thread yellow appears on the top side of the fabric Set the yellow thread tension to a higher value and or the red one to a lower value Top side Top side Top side Top side Underside Underside Underside Underside Seam pattern ...

Page 39: ...thread and fishing line on the top side of the fabric and for decorative cording 5 Cording foot type B For sewing on cords and yarn on the top or on the underside of the fabric and for decorative cording 6 Piping foot For sewing together two pieces of fa bric with a piping tape between them in one operation 7 Beading attachment with beading guide For serging on beading and sequins 8 Shirring Gathe...

Page 40: ...leaner Cleaning the feed dog Switch the main switch to OFF Open the looper cover and the swivel plate Remove the needles and the presser foot Loosen the fastening screw of the needle plate and remove the needle plate Remove any waste thread from the feed dog towards the front using the cleaning brush Fasten the needle plate attach the presser foot insert the needles and close the looper cover and ...

Page 41: ... plate Apply a few drops of high quality machine oil to the points marked with arrows Oil the machine once a week for normal operation or every ten hours for continuous operation Open the looper cover and oil the marked points Oil the marked point on the top of the machine ...

Page 42: ... upper blade Insert the new upper blade into the blade holder in such a way that the blocking pin engages in the groove Tighten the hexagon head screw slightly Move the upper blade to its upper position Turn the handwheel towards you until the upper blade has reached its lowest position Undo the hexagon head screw and adjust the position of the upper blade so that the edges of the upper blade and ...

Page 43: ... holder press the lamp in and turn to the right Replace the sewing lamp cover and tighten the fastening screw Safety notes Only use bulbs with a maximum output of 15 Watt The bulb becomes very hot Never touch the bulb with bare hands fastening screw sewing light cover light bulb to insert to re move Changing the light bulb Switch the main switch to OFF Loosen the fastening screw to the sewing ligh...

Page 44: ...o firmly Do not pull on the fabric when sewing Thread breaks Incorrectly threaded Thread properly see Page 10 18 Thread has caught Check if the thread is caught on the spool stand etc Thread tension is too tight Correct the tension see Page 32 36 Needle not fully inserted Insert needle correctly see Page 22 Incorrect needle used Use needle system HAx1SP 130 705 PS Skipping stitches Needle bent or ...

Page 45: ...ught due to incorrect Thread correctly threading see Pages 10 18 Fabric not fed Stitches too short Increase stitch length through evenly see Page 20 Sewing foot pressure too low for Increase sewing foot pressure heavy fabrics see Page 21 Sewing foot pressure too high for Reduce sewing foot pressure lightweight fabrics see Page 21 Waste thread in the feed dog Clean the feed dog Machine will The lea...

Page 46: ...rication manual Presser foot height 4 5 mm Overedge stroke 2 0 mm Needle system HAx1SP 130 705 H PS Needle size 80 12 90 14 Number of threads 3 4 Dimensions width x height x depth 310 x 280 x 270 mm Weight 7 1 kg Packing contents 1 machine 1 foot control 1 instruction manual guarantee card 1 machine cover 1 accessory box 1 waste container ...

Page 47: ...45 Notes ...

Page 48: ...46 Notes ...

Page 49: ...47 Notes ...

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Page 51: ...ower overedge looper yellow Standard presser foot Bed slide for stitch width latch Fixed lower blade Thread chain cutter Presser foot lifter Needle plate Ridged knob for lowering the upper blade Setting knob for seam width Parts of the hobbylock 4752 ...

Page 52: ...VSM Group AB SE 561 84 Huskvarna SWEDEN www pfaff com 412 86 03 26D English Inhouse 2004 2008 VSM Group AB Printed in Sweden on environmental friendly paper ...

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