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Related Manuals for Singer 20U-105C
Summary of Contents for Singer 20U-105C
- Page 1 Zigzag Sewing Machine 105 / 105C 125 / 125C SINGER and the Cameo "S" Design are exclusive trademarks of The Singer Company Limited S.à r.l. or its Af liates. ©2017 The Singer Company Limited S.à r.l. or its Afliates. All rights reserved.
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Page 2: Table Of Contents
Contents 1 Safety Instructions Important Safety Instructions For Safe Operation 2 Product Description and Machine Specification Product Description Machine Specification Motor, Motor Pulley and V-Belt Specifications Relationship between Zigzag Bight and Maximum Speed Table Cut-Out Drawing Oil Reservoir Installation Belt Cover Installation Lubrication Needle and Thread Inserting the Needle... - Page 3 Contents Maintenance Machine Head Cleaning Lubrication Safety Inspection Troubleshooting Parts List Face Plate, Arm Top Cover and Arm Side Cover Components Thread Take-up, Arm Shaft and Handwheel Components Needle Bar, Presser Bar and Needle Plate Components Zigzag Triangular Cam and Hook Advancing Crank Components Bight Amplitude and Bight L-C-R Position Components Arm Shaft (upright) and Rotating Hook Drive Shaft Components Hook and Bobbin Case Components...
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Page 4: Safety Instructions
• When the machine is in mainte- following items. cations of use should be followed. nance. Read all instructions, Singer will not be held responsible • When the operator is not run- take care of this for any damage caused by unau- ning the machine. -
Page 5: For Safe Operation
• To avoid the risk of electric shock, • If you machine is equipped with do not open the motor wiring box a servomotor, it does not make and do not touch the components noises while being driven.To avoid For Safe assembled inside the wiring box. -
Page 6: Product Description And Machine Specification
Product Description and Machine Specification Zigzag Sewing Machine 20U series Product Description Zigzag Sewing Machine Instruction Manual and Parts List... -
Page 7: Machine Specification
Table 1 – Machine Specification Machine Singer model Specification 20U-105 / 105C 20U-125 / 125C For sewing Light to medium Plain zigzag (Straight stitch) Stitch type Max. speed[1] 2,500 rpm 2,000 rpm Max. stitch bight 9.0 mm 12.0 m 3.0 mm Max. - Page 8 Setup and Adjustment Instructions Table Cut-Out Drawing Figure 1 Zigzag Sewing Machine Instruction Manual and Parts List...
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Page 9: Oil Reservoir Installation
The oil reservoir should be fixed on the side of the machine table groove by using four nails (Figure 2). Oil Reservoir Installation Figure 2 Figure 3 Two hinges ‘1’ fit into the hole in the before the machine head is placed to machine bed, and the machine head the cushions on the four corners of fitted the table hinge’s rubber ‘2’... -
Page 10: Belt Cover Installation
The machine belt cover The motor belt cover Install the machine belt cover so Install the motor belt cover so that Belt Cover that the hand wheel and v-belt motor pulley and v-belt will rotate move freely without interference, freely without interference. Installation and then tighten the screw at this position (see Figure 5). -
Page 11: Lubrication
The rotating hook, and the area at Regularly apply one or two drops of the under of the needle plate. oil to the oil hole at the rotating hook (Oiling point at the Figure 6). Lubrication Turn handwheel over toward you until oil hole in the rotating hook Caution appear in sight. -
Page 12: Needle And Thread
Selection of the proper needle needle and thread sizes to be used depends not only on the machine on the various machine models model, but also on the material and please refer to the table below. Needle and thread used. For selection of proper Thread Caution Table 4 - Needle and Thread... -
Page 13: Bobbin Case Attachment
Follow as shown in Figure 9 1. Open bed slide. Bobbin Case 2. Raise latch ‘1’. Attachment 3. Lift out bobbin case ‘2’. Caution Switch off the machine. Do not operate the machine with throat plate left open. Figure 9 Zigzag Sewing Machine Instruction Manual and Parts List... -
Page 14: Bobbin Thread Winding
Place bobbin on bobbin winder Bobbin spindle ‘3’ and pushing it on as far Thread as it will go. Winding ‘1’ adjustment. ‘+’ direction: Increase tension Caution ‘-‘ direction: Decrease tension Do not guide or Push latch ‘2’ in the direction indi- hold thread cated by arrow ‘A’, then start the when winding... -
Page 15: Bobbin Case Threading And Replacement
Hold bobbin case so that bobbin rotates in the direction of the arrow, and put bobbin in the bobbin case. Bobbin Case (Figure 12) Threading and Replacement Note Figure 11 When straight stitching, a better result can be obtained Put thread into notch ’1’, and pull it if bobbin thread under tension spring ‘2’... - Page 16 Hold bobbin case by latch ‘1’ and Caution place it on spindle of bobbin case holder ‘2’ so that position finger ‘3’ Switch off the enters notch ‘4’ at right of bobbin machine. case holder (see Figure 12). Do not run Release latch and press bobbin case machine with- firmly in place to assure proper...
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Page 17: Machine Threading
3.10 When threading the machine head, Threading the machine in the order the needle bar should be at the shown in the Figure 19. highest point of its stroke. Machine Leave thread approximately 4 cm longer in the needle. Threading Caution Switch off the machine. -
Page 18: Stitch Length Adjustment
3.11 Adjusting the stitch length: Adjusting the reverse stitch length: Turn stitch length dial ‘1’ in the Push feed reverse lever ‘2’ down for Stitch Length direction of the arrow, and align the reverse feed, and release it for desire number to marker dot ‘A’ on forward feed. -
Page 19: Needle Thread Tension Adjustment
3.13 Adjusting the tension of needle tion of the marker ‘+’), the tension thread using tension adjusting nut will increase. Needle ‘1’ according to different sewing Turn the nut ‘1’ counterclockwise (in condition. (Figure 20) direction of the market ‘-‘), the Thread Turn the nut ‘1’... -
Page 20: Bobbin Thread Tension Adjustment
3.15 Turn the tension adjusting screw ‘1’ clockwise (in direction of the marker ‘+’), the bobbin thread tension will Bobbin increase. Thread Turn the tension adjusting screw ‘1’ Tension counterclockwise (in direction of Adjustment the marker ‘-’), the bobbin thread tension will decrease. -
Page 21: Stitch Width Regulator
3.17 The width of zigzag stitches is con- trolled with the spring biased stitch width regulating lever ‘1’ (Figure Stitch Width 24). Regulator Maximum zigzag width: Caution 20U-105 / 105C : 9.0 mm Do not make any 20U-125 / 125C: 12.0 mm needle position adjustment while the needle is in... -
Page 22: Needle Bar Frame Clamp Device
3.19 When straight stitching, a better When zigzag stitching, be sure the sewing result can be obtained by clamp is released. locking needle frame Needle Bar To release the clamp, turn the knob immovable with clamping ‘1’ counterclockwise as far as it will Frame Clamp device. -
Page 23: Straight And Zigzag Stitch Fitting
3.20 Zigzag stitch Presser Foot ‘1’, Straight Stitch Presser Foot ‘1’, Needle Plate ‘2’ and Feed Dog ‘3’ Needle Plate ‘2’ and Feed Dog ‘3’ are used for straight and zigzag are used for straight stitching only. Straight and stitching. (Figure 27) (Figure 28) Zigzag Stitch Fitting... -
Page 24: Spool Cap Usage
3.21 When using a reel type thread spool of spool pin ‘5’, and the tip of the ‘2’, fit the spool cap ‘1’ onto the slotted spigot of the spool cap ’1’. Spool Cap thread spool hole ‘3’, which is sup- The spool cap ’1’... -
Page 25: Thread Anti-Spill Net Usage
3.22 When using synthetic threads that from the bottom of cone ‘1’ leaving easily spill off the cone ‘1’, slip the the thread end to hang free at the thread anti-spill net ‘2’ furnished top of thread anti-spill net ‘2’. Thread Anti- with the machine over the thread (Figure 31) - Page 26 Caution Knee operating presser foot lift Raise presser foot ‘12’ by presser (Figure 33) foot lifter ‘11’. Then loosen the lock Switch off the nut holding screw ‘14’ and turn machine. Bell cranks ‘1’ is fastened to the screw ‘14’ as required when the underside of the bed, the bell crank Set sewing head knee lifter knee plate ‘5’...
- Page 27 Caution Knee operating stitch width control arm ‘3’ up or down as required, so that height ‘10’ from its bent end ‘6’ (Figure 34) Switch off the Bell cranks ‘2’ is fastened to the to bracket ‘9’ is 67 mm. machine.
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Page 28: Fittings For Buttonhole Stitching
3.24 Buttonhole Foot ‘1’, Needle plate ‘2’ used for buttonhole stitching. (Zigzag stitch) and Feed Dog ‘3’ are (Figure Fittings for 606652(20U-105/105C) Buttonhole 606402(20U-125/125C) Stitching 606688(20U-105/105C) 606502(20U-125/125C) 606692(20U-105/105C/125/125C) Figure 34 3.25 The hem foot ‘1’, needle plate ‘2’ 1. Needle position selector: (Straight stitch) and feed dog ‘3’... -
Page 29: Fittings For Zipper And Cord Sewing
3.26 2. Stitch width regulate: Straight The zipper presser foot ‘1’ is stitch position designed to facilitate the placement of stitching closed to a raised edge Fittings for 3. Needle plate: Straight stitch ‘3’ as the following condition. (Figure Zipper and Zigzag stitch ‘2’... -
Page 30: Maintenance
Maintenance Clean the machine periodically with a soft and dry cloth to remove the excess of dust on the machine Machine Head head. Do not use any kind of Cleaning lacquer thinner to wipe the surface. If the machine was idle for a long time, lubricate the machine accord- Lubrication ing to the instructions of topics 3.4... -
Page 31: Troubleshooting
Troubleshooting Whenever sewing difficulty is encountered, check and make adjustments as follows. Problem Possible Causes Possible Solutions 1. Is machine properly threaded 1. Correct needle threading 2. Are thread guides or tension disc area lint-free 2. Remove lint & fluffin bobbin case & hook 3. -
Page 32: Parts List
Parts List... -
Page 33: Face Plate, Arm Top Cover And Arm Side Cover Components
Face Plate, Arm Top Cover and Arm Side Cover Components Part No. Description 105C 125C 554113-383 Thread take-up guard 606407 Take-up guard screw 606395 Face plate assembly 606632 Thread guide 606633 Thread guide screw 606634 Screw Back cover 554118-385 606635 Screw 606433 Arm top cover assembly... - Page 34 606602 Arm top cover screw 606398 Eccentric lock 544212-001 Stopper screw J900112-001 Singer 'S' cameo J900112-002 Singer logo resin plate (front) J900112-003 Singer logo resin plate (back) J900020-xxx Model plate R03001 Rivet Zigzag Sewing Machine Instruction Manual and Parts List...
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Page 35: Thread Take-Up, Arm Shaft And Handwheel Components
Thread Take-up, Arm Shaft and Handwheel Components Part No. Description 105C 125C 606640 Thread take-up assembly 606475 Thread take-up 606474 Thread take-up eyelet 606641 Thread take-up lever link 606471 Needle bar connecting link cap screw 606642 Needle bar connecting link assembly 606472 Needle bar connecting link 606466... - Page 36 Part No. Description 105C 125C Thread 606467 Needle bar connecting hinge pin 606465 Washer Take-up, Arm 606473 Thread take-up crank Shaft and 606643 Hinge stud 606420 Hinge stud set screw Handwheel Guide 606469 Components Screw 606444 606644 Arm shaft and needle bar crank assembly 606484 Arm shaft 606477...
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Page 37: Needle Bar, Presser Bar And Needle Plate Components
Needle Bar, Presser Bar and Needle Plate Components Zigzag Sewing Machine Instruction Manual and Parts List... - Page 38 Part No. Description 105C 125C Needle Bar, Needle bar 606646 Needle bar 606461 Presser Bar and Needle clamp screw 606463 Needle Plate 606647 Needle bar frame assembly 606456 Needle bar frame Components Indicator plate 606458 Indicator plate screw 606459 606457 Eccentric pin set screw 606516 Set screw...
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Page 39: Zigzag Triangular Cam And Hook Advancing Crank Components
Zigzag Trian- gular Cam and Hook Advancing Crank Components Part No. Description 105C 125C 606620 Set screw 606539 Cam shaft assembly 606655 Cam shaft 606656 Cam shaft oil wick 410031 Zigzag cam and gear assembly 410056 Zigzag cam and gear assembly 606542 Cam shaft collar assembly 606541... - Page 40 Part No. Description 105C 125C Zigzag Trian- 606588 Oil felt Oil reservoir assembly 606657 gular Cam Oil reservoir assembly 606586 and Hook 606658 Oil wick 606659 Oil reservoir bracket Advancing 606664 Slide block cap screw Crank 606663 Zigzag stitch regulator fork Components 606538 Zigzag stitch regulator fork...
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Page 41: Bight Amplitude And Bight L-C-R Position Components
Bight Ampli- tude, and Bight L-C-R Position Components Zigzag Sewing Machine Instruction Manual and Parts List... - Page 42 Part No. Description 105C 125C Bight Ampli- 606511 Screw 606571 Washer tude, and 606569 Stop plate Bight L-C-R 606554 Lever arm regulating screw nut 606553 Lever arm regulating screw Position 606572 Screw Components Spring 606577 606575 Regulating plate (left) 606576 Regulating Plate (right) Regulating plate holder 606574...
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Page 43: Arm Shaft (Upright) And Rotating Hook Drive Shaft Components
Arm Shaft (upright) and Rotating Hook Drive Shaft Components Part No. Description 105C 125C Bevel gear assembly (upper) 541610 Bevel gear set screw 504101 Arm shaft bushing (upper) 606677 606678 Arm shaft (upright) 606527 Upright bushing (lower) 541609 Bevel gear assembly (lower) 504101 Bevel gear set screw 606585... - Page 44 Part No. Description 105C 125C Arm Shaft 606533 Upright bushing (upper) 606534 Bushing set screw (upright) and 606679 Clutch sleeve assembly Rotating 504101 Clutch sleeve (upper) screw 504101 Clutch sleeve screw Hook Drive Connecting stud 606528 Shaft Retaining collar assembly 606523 Components 504101...
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Page 45: Hook And Bobbin Case Components
Hook and Bobbin Case Components Zigzag Sewing Machine Instruction Manual and Parts List... - Page 46 Part No. Description 105C 125C Hook and 606517 Hook shaft collar assembly Hook shaft collar screw 606518 Bobbin Case Set screw 606516 Components 606519 Hook shaft bushing (short) 541689 Bevel gear assembly Bevel gear screw 504101 Set screw 606516 606515 Hook shaft bushing (long) 606520 Hook shaft...
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Page 47: Feed Regulating Dial And Feed Reverse Lever Components
Feed Regulat- ing Dial and Feed Reverse Lever Components Zigzag Sewing Machine Instruction Manual and Parts List... - Page 48 Part No. Description 105C 125C Feed Regulat- 606618 Spring 606617 Stud lock pin ing Dial and 606609 Feed regulating stud Feed Reverse 554138-383 Feed regulating dial 543803-004 Dial screw washer Lever Dial screw 544218-053 Components Hinge stud 606610 606685 Feed regulator & fork assembly 606611 Feed regulator assembly 606686...
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Page 49: Feed Mechanism Components
Feed Mechanism Components Zigzag Sewing Machine Instruction Manual and Parts List... - Page 50 Part No. Description 105C 125C Feed 606493 Connecting rod assembly 606434 Connecting rod cap screw Mechanism 606492 Oil felt Components 606496 Hinge screw 606494 Hinge screw nut 606507 Feed lifting rock shaft assembly 606687 Roller and Stud 606508 Lifting rock shaft crank assembly 606500 Crank clamping screw 606497...
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Page 51: Presser Bar Lifter And Thread Tension Components
6.10 Presser Bar Lifter and Thread Tension Components Zigzag Sewing Machine Instruction Manual and Parts List... - Page 52 6.10 Part No. Description 105C 125C Presser Bar 606598 Hand lifter lever 606597 Hand lifter lever pin Lifter and 606599 Screw Thread 606413 Tension release lever 606412 Tension Tension release lever screw spring 606411 Tension release lever screw Components 410413 Thread retainer 606518 Thread retainer screw...
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Page 53: Thread Stand Components
6.11 Thread Stand Components Zigzag Sewing Machine Instruction Manual and Parts List... - Page 54 6.11 Part No. Description 105C 125C Thread Stand 30102032 Thread bar (lower) 30128024 Washer Components 10128006 Rubber washer N02001 30101029 Bracket (2 spools) 30103044 Spool holder 30102033 Spool pin 30123014 Cushion 30111007 Spool tray W02002 Spring washer N01005 L02004 Screw N01004 S04002 Screw...
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Page 55: Accessories And Attachments
6.12 Accessories Attachments Zigzag Sewing Machine Instruction Manual and Parts List... - Page 56 6.12 Part No. Description 105C 125C Accessories 606690 Accesspry box 1910-05 Needle (1910-05 #14) 606691 Zipper foot Attachments 606692 Presser foot assembly (for button holing) 606693 Presser foot assembly (for straight stitching) 606694 Hemmer foot assembly 606695 Needle plate (for straight stitching) 606696 Needle plate (for embroidery) 606697...
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Page 57: Belt Cover Components
6.13 Belt Cover Components Part No. Description 105C 125C 281840-383 Belt cover assembly 404.06-05-01 Belt cover (upper) 549398 Belt cover (lower) wood screw 543803-003 Belt cover (lower) wood screw washer 281835-383 Belt cover (lower) 11-60121620-01 screw (SM3/16x28-16) 11-60111020-01 screw (SM11/64x40-10) 101-08-16 Oil pump connecting stud Zigzag Sewing Machine... - Page 58 SINGER and the Cameo "S" Design are exclusive trademarks of The Singer Company Limited S.à r.l. or its Affiliates. ©2017 The Singer Company Limited S.à r.l. or its Affiliates. All rights reserved. www.singer.com...