Singer 257 H-56 Instruction Manual Download Page 1

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Summary of Contents for 257 H-56

Page 1: ...73 7 M 04 243M 24 TF 732M 075 244M 24 733M 04 TF 257 M 35 734M 04 257 M 55 24 7 M 24 25 257 H 56 Singer is a registered trademark of The Singer Company Limited or its affiliated companies 2009 Copyright The Singer Company Limited ...

Page 2: ...6 1 Tension Nut Adjustment 10 3 6 2 NeedleThread Control 10 3 6 3 LooperThread Control 11 3 6 4 Chain LooperThread Cam Control 11 3 7 Adjusting the Differential Feed Rate 12 3 8 Stitch Length Adjustment 12 3 9 Parts Relation andTiming 13 3 9 1 Needle and Needle Plate 13 3 9 2 Upper Looper Spreader and Needle 14 3 9 3 Lower Looper and Needle 14 3 9 4 Upper and Lower Loopers 15 3 9 5 Needle and Need...

Page 3: ...ooper Components 32 6 8 Lower Looper Components 34 6 9 Front Looper Components 35 6 10 Cam Components 36 6 11 Differential Feed Components 38 6 12 Feed Dog Components 40 6 13 Trimming Components 42 6 14 Presser Foot Components 44 6 15 Lubrication Components 46 6 16 Feed Snap Components 48 6 17 Thread Spool Components 50 6 18 Plate Row Material Components 52 6 19 Accessories 53 ...

Page 4: ... machine is in main tenance 0 When the operator is not run ning the machine Oln case of lubricant oil contact with the eyes or skin wash the surface with plenty of icy water In case of ingestion seek medical help immediately ORepair fitting or maintenance should only be performed by properly trained personnel 0Maintenance and repair on elec tric equipment should only be made by qualified personnel...

Page 5: ...ine is equipped with a servomotor it does not make noises while being driven To avoid a possible accident caused by an unexpected start bev sure the ma chine is turned off 0To avoid electric do not run the machine without proper ground Ing fingers next to the loopers when A TO minimize the risk of accidents the machine is running 0The shuttle whirls at high speed while the machine is running To av...

Page 6: ...2 1 High Speed Overlock Machine I Product Description High Speed Overlock Machine Instructions Manual and Parts List 3 ...

Page 7: ...ecification 9 o 0 o 0 o N I 0 Clutch motor 1 2 HP 400W high 2 3 Speed 2 poles l Motor Motor Belt type M Pulley and Belt 90 i 95 i 100 i 105 i 110 i 115 High Speed Overlock Machine Instructions Manual and Parts List 4 ...

Page 8: ...3 1 Table Cut Out Diagram 65 214 V 259 J 305 J 442 L 540 V 40 01 433 A 300 A 269 258 Figure 1 289 359 469 537 595 1200 High Speed Overlock Machine Instructions Manual and Parts List 2 13 27 ...

Page 9: ...able I nents and the residues cam as indi top is 100mm For inserted assem _ cated on figure 2 In case ofsemi in bly the distance is about 5 0mm maChme serted assembly the distance from Installation Figure 2 High Speed Overlook Machine Instructions Manual and Parts List 6 ...

Page 10: ...e Connect the machine Wheel to the maChlne motor With the belt Be sure the motor is clockwise di Installation Adjust the belt tension so that there rected referred to figure 3 is a gap of about 20 mm when the center of belt is pressured Set the belt cover according to fig ure 4 Figure4 High Speed Overlook Machine Instructions Manual and Parts List 7 ...

Page 11: ...me time oil the needle bar top the guides and loopers before running it A new machine should be run at 80 maximum speed on the first four weeks After this initial cycle Figure 5 replace the oil and from then on the machine can be used at maxi mum speed To preserve the machine change the oil after four weeks of use After that the oil must be changed every four months To change the oil sim ply remov...

Page 12: ...r Replacement to the back side and push it up until the bar end Tighten screw 1 7 Figure 7 3 5 For five thread machine For three four thread machine I Machine Threading Important Refer to the sewing type you need for correct threading Any incorrect threading may cause thread brake uneven stitches or skip stitches High Speed Overlook Machine Instructions Manual and Parts List 9 ...

Page 13: ...es the tension of the thread Tension Nut 3 controls the thread in the right looper The following adjustments are re lated to figure 10 Tension Nut 4 controls the thread in the left looper Tension Nut 1 controls the needle thread or the left thread in case of two need es Tension Nut 5 controls the thread of the safety stitch Tension Nut 2 controls the thread in the right needle Figure 10 For all ty...

Page 14: ...s line the dotted mark as on figure 12 Adjust guide 3 follows 0 Position 14 for stretchy thread 0 Position B for seaming and blind stitch hemming 0 Position 0 stitch type 512 Adjust guide 4 as follows 0 Position 0 for stretchy thread 0 Position E for seaming and blind stitch hemming Figure 12 When the needle is on high posi tion mark 14 must be aligned with the thread guide bracket 1 as shown on f...

Page 15: ...feed dog and differencial feed dog When the movement of main feed dog is less than that of the differencial feed dog the cloth will be frilled during sewing Otherwise the cloth will be stretched Press button to the end and keep it pressed as shown on figure 15 Turn the wheel until we have the desired stitch length It is shown on the wheel scale Release nut 1 on figure 14 and turn screw 2 clockwise...

Page 16: ...m ahead the left needle Distance between needle point the right needle if there are two nee dles and the front part of the hole in the needle plate or presser foot is 1 2 mm A 9 5 9 7 mm High Lift 10 8 11 0 mm Release screw 1 as shown on fig ure 16 Turn the wheel to see if needle is centralized at every hole of the needle plate Release screw 2 to adjust needle holder Turn the wheel to move needle ...

Page 17: ...0 mm for one Figure 17 When the lower looper moves to When the lower looper moves to the extremly left the distance 14 the center line of needle left nee between looper point and center die if two needles the gap be line of the needle left needle if tween needle and looper is from 0 two needles is from 3 4 to 3 6 mm to 0 05 mm as shown on figure 19 for high lift machines as shown on figure 18 E E ...

Page 18: ...n nee dle and rear needle guard of 14 is 0 mm When needle moves to the lowest position space between needle and front needle guard of B is from 0 15 to 0 20 mm accord ing to figure 21 The safety looper should be fixed in a position lower than this support And when it moves to the left far end the distance between the loop er point and the center line ofneedle is 2 5 mm according to figure 22 0 5 A...

Page 19: ...ths When changing the oil fol low instructions on item 3 3 Frequently check if all safety de vices are properly installed and adjusted Check all screws that fix and hold the machine head that should be properly tight Check and be sure the belt is not excessively worn out and see that it has the proper tension Oil filter should be cleaned every month or replaced for a new one as necessary To clean ...

Page 20: ... wrongly set Z Needle overheating 8 Tension disk or guides with burrs 9 Wrong relation of needle with looper 10 Needle looper needle plate and guides have burrs 1 Wrong relation of needle with looper Wrong passage of thread Inadequate tension of thread 2 3 Needle installed the wrong way 4 5 Point of looper damaged 6 Needle damaged Z Wrong installation of needle guards 1 Wrong threading 2 Thread is...

Page 21: ...g Inadequate pressure on presser foot Inadequate height of feed dog Knives does not cut perfectly Diﬁerential feed is not correct 9191 sz Needle is too thick Incorrect presser foot Inadequate synchronism of Iopper cam Chain stitch Iooper installed wrongly Wrong passage of thread HPWNH Thread tension inadequate 5 Wrong relation of needle with looper Z Needle plate or presser foot with burr 8 Rough ...

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Page 23: ...6 1 Frame Components al and Parts List 20 High Speed Overlook Machine Instructions Manu ...

Page 24: ...Rear cover 12 cover 11 Cover washer 13 Oil screen 15 Oil seal I 16 Oil seal M 17 Oil amount adjusting pin 22 222w 22 222w 24 222w 25 Screw M3x3 22 2222 22 222w 22 222w 22 222w 22 222w 22 222w 22 2222 24 222w 22 222w 36 Side cover 37 Side cover pad High Speed Overlock Machine Instructions Manual and Parts List 21 ...

Page 25: ...6 2 Cloth Plate Components High Speed Overlook Machine Instructions Manual and Parts List 22 ...

Page 26: ...over spring Cloth plate lower plate Washer Upper looper sealing plate coooxlmcnhwwa _ O _ _ Upper looper sealing plate washer 12 Screw 1S Screw r4 Screw re Screw w Screw co Screw 21 Screw 23 Cloth plate 24 Cloth plate lower plate 25 Rubber bushing High Speed Overlock Machine Instructions Manual and Parts List 23 ...

Page 27: ...6 3 Cover Components al and Parts List 24 Manu High Speed Overlook Machine Instructions ...

Page 28: ...nge 13 Hinge pin 14 Front cover hinge spring 15 Front cover hinge washer 16 Trade mark plate 17 Oil flow window 18 Front cover snap guard 19 Oil guard 20 Oil level gauge washer 21 Pin 22 Oil sight window 23 Eye Guard 24 Upper cover 25 Screw 26 Thread guide supporter 27 Screw 28 Snap spring 29 Screw so screw s1 screw 32 screw as screw s4 screw as Screw 37 Machine model plate High Speed Overlock Mac...

Page 29: ...6 4 Main Shaft Components al and Parts List 26 Manu High Speed Overlook Machine Instructions ...

Page 30: ...n shaft spring washer 9 Oil pump worm 11 Main shaft left bushing 13 Bearing cover Bearing cover 14 Bearing cover washer 17 Bulgy pulley shaft rs screw 2o Screw 22 Sarah 2a screw 2a screw 2e screw 2e screw 22 Screw High Speed Overlock Machine Instructions Manual and Parts List 27 ...

Page 31: ...6 5 Needle Bar Components High Speed Overlook Machine Instructions Manual and Parts List 28 ...

Page 32: ...earing right Thrust collar Balance block Needle bar frame rock shaft crank Needle bar frame rock shaft crank Needle bar connecting rod Connecting link pin Screw Needle bar guide bracket Needle bar Cat No 6120 06 Needle Cat No 6120 06 Needle Cat No 6120 06 Needle Oil wick Plastic tube Oil wick Needle clamp Needle clamp Needle clamp Needle clamp for thick Thrust collar set screw Hexagon socket screw...

Page 33: ...hread tension spring Thread tension spring Thread tension disc presser Thread tension disc Thread tension disc washer Thread tension screw Thread guide Thread guide Thread guide Thread guide Upper thread take up Upper thread take up High Speed Overlook Machine Instructions Manual and Parts List 30 ...

Page 34: ...le plate Needle plate Needle plate Needle plate Needle plate Needle plate Needle plate Thread guide Needle guard Needle guard l Needle guard bracket Needle guard bracket Snap plate Snap plate washer Washer Throat screw Front needle guard screw Throat plate bracket screw Thread guide holder screw Silicon oil box set screw Silicon oil box set screw Rear needle guard screw Needle guard screw Thread t...

Page 35: ...6 7 Upper Looper Components c a n 5 A 59 e in Q 5 3 l6 1 m 6 inf is 9 High Speed Overlook Machine Instructions Manual and Parts List 32 ...

Page 36: ...oil plate 19 Felt plate 20 Thread holder snap plate 21 Upper looper shaft slide bar bracket 22 Thread guide 23 Oil wick 24 Screw 25 Thread amount regulating plate 26 Upper looper thread guard 27 Upper looper shaft thread plate 28 Screw 29 Upper looper set screw A D Upper looper A _ Upper looper crank Upper looper crank 32 Screw 33 Screw 34 Upper looper crank screw 35 Washer 36 Link pin set screw 3...

Page 37: ...er looper crank Lower looper crank Lower looper Lower looper Crank screw Thread guide Lower looper thread guide Lower looper thread guide Lower looper shaft Lower looper shaft Low looper shaft screw Crank screw Lower looper holder screw Lower looper holder washer Lower looper screw Thread guide screw Crank screw High Speed Overlock Machine Instructions Manual and Parts List 34 ...

Page 38: ...ont looper shaft bushing rear 10 Front looper shaft 11 Driving lever _ N Front looper driving crank _ A Front looper slide block _ b Thread guide screw _ O l Front looper guide set screw _ 0 Front looper holder set screw Washer Screw _ l _ m _ CO Front looper crank screw N 0 Screw N _ Screw N N Snap ring N A Screw N 4 Regulating plate pin High Speed Overlock Machine Instructions Manual and Parts L...

Page 39: ...6 10 Cam Components High Speed Overlook Machine Instructions Manual and Parts List 36 ...

Page 40: ...aft bushing 8 Right horizontal shaft bushing 10 Looper thread take up cam 11 Thread guide 12 Thread guide 14 Flat spring 15 Thread guide position plate 16 Thread guide ring 17 Thread guide 18 Thread guide 19 Thread pipe cover 20 Thread pipe 23 screw 24 Tension disc 27 Bearing snap ring screw 28 Carn set screw 29 Crank set screw as Screw High Speed Overlock Machine Instructions Manual and Parts Lis...

Page 41: ...6 11 Differential Feed Components High Speed Overlook Machine Instructions Manual and Parts List 38 ...

Page 42: ...eed rod rolling pin bearing Feed crank Differential link Differential crank Differential shaft Differential shaft bearing Oil seal Thrust collar Spﬂng Washer Regulating block Washer Feed cam Washer Differential regulation holder Regulating screw Regulating screw spring Differential regulating link Crank link cam Differential link screw Differential crank screw Thrust collar set screw Washer Washer...

Page 43: ...6 12 Feed Dog Components High Speed Overlook Machine Instructions Manual and Parts List 40 ...

Page 44: ... link 15 Main feed dog bar link bushing 17 Crank slide block cover 18 Crank slide block 19 Feed regulating crank 20 Differential feed dog bar link 21 Differential feed dog bar link bushing 23 Screw oil plate 24 Feed dog carrier connection rod 25 Sealing connecting ring 26 Adjustable oil seal 27 Sealing connecting rod 28 Feed dog link eccentric shaft 29 Feed dog complete set 30 Thrust collar set sc...

Page 45: ...6 13 Rimming Components High Speed Overlook Machine Instructions Manual and Parts List 42 ...

Page 46: ... knife holder pin Upper knife Upper knife Washer Lower knife holder Lower knife holder Lower knife holder Lower knife holder bushing Lower knife holder spring Lower knife holder plate Lower knife Lower knife Lower knife holder lock plate Thrust collar set screw Upper knife crank set screw Upper knife crank pin screw Connecting link screw Upper knife holder screw Upper knife screw Screw Screw Washe...

Page 47: ...6 14 Presser Foot Components Presser foot arm Presser foot shaft bushing Screw Presser foot shaft Presser foot shaft bushing High Speed Overlook Machine Instructions Manual and Parts List 44 ...

Page 48: ...sher Presser foot corner plate Presser foot spring Presser foot holder connection plate Screw Screw Presser foot lifting spring Presser foot holder cover Presser foot complete Presser foot complete Presser foot complete Presser foot complete Presser foot complete Presser foot complete Presser foot complete Presser foot complete Presser foot lifting handle Presser foot lifting annul Presser foot li...

Page 49: ...6 15 Lubrication Components High Speed Overlook Machine Instructions Manual and Parts List 46 ...

Page 50: ...ver Oil pan Oil pan washer Oil seal Oil filter Oil filter joint Oil filter cover Oil filter cover seal ring Oil filter cover seal ring Tube Oil tube joint I Oil tube joint l Oil tube shape ring Lubricate bushing Upper drain pipe Lower drain pipe Screw Oil show bracket Oil show cleaner link Oil show cleaner guard Oil dial Screw Screw Screw High Speed Overlock Machine Instructions Manual and Parts L...

Page 51: ...6 16 Feed Snap Components High Speed Overlook Machine Instructions Manual and Parts List 48 ...

Page 52: ...oil box Lower 9 Cloth guide holder 10 Hinge plate 11 Oil felt block 13 Hinge spring 14 Snap plate Snap plate Snap plate 15 Snap plate bracket 16 screw 18 Hinge spring screw 19 Hinge screw 21 Screw 22 Needle cooler screw 23 screw 25 Oil tube shape ring High Speed Overlock Machine Instructions Manual and Parts List 49 ...

Page 53: ...6 17 Thread Spool Components High Speed Overlook Machine Instructions Manual and Parts List 50 ...

Page 54: ...1 Thread guide connecting bar 12 Thread guide joint 14 Thread guide bar 15 Thread spool tray bracket upper 16 Thread spool tray bracket upper 17 Thread spool tray bracket lower 18 Thread guide hook 19 Rubber seal 20 Thread guide hook screw 21 Thread guide hook nut 22 Thread guide washer 23 Clamp plate screw 26 Lower washer High Speed Overlock Machine llnstructions Manual and Parts List 51 ...

Page 55: ...s Machine support plate Support shockproof cushion Screw Bolt Washer Bolt specer Waste chute inlet Waste chute upper Waste chute lower Cushion rubber Screw Washer Screw High Speed Overlock Machine Instructions Manual and Parts List 52 ...

Page 56: ...ner hexagon screw driver _ O Inner hexagon screw driver _ _ Inner hexagon screw driver _ A Allen Key Driver _ 5 Screw driver _ O l Screw driver _ O Tweezers _ l Threader 18 Presser foot base chain 20 Thumb screw 21 Needle 22 Lower knife Lower knife 23 Oil filter 24 Belt High Speed Overlock Machine llnstructions Manual and Parts List 53 ...

Page 57: ...251M 55 321C 251H 56 20115006 20115001 20115004 20115001 20115002 20115010 20115005 20115002 20115003 20115008 20115007 20116006 20116001 20116004 20116004 20116002 20116008 20116005 20116002 20116003 20116007 20116015 20128006 20128006 20128006 20128006 20128005 20128035 20128005 20128005 20128005 20128005 20128005 20104009 20104009 20104009 20104009 20104009 20104009 20104009 20104010 20104010 2...

Page 58: ...P N 364336 001Rev 1 Ju 2009 Q SINGER Singer is a registered trademark of The Singer Company Limited or its affiliated companies 2008 Copyright The Singer Company Limited ...

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