Magenta 43 Operation, Service Manual & Parts List

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First Edition: 08 July 2020

SERVICE MANUAL

PARTS LIST

MODEL: Magenta 43

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Summary of Contents for Magenta 43

Page 1 First Edition: 08 July 2020 SERVICE MANUAL & PARTS LIST MODEL: Magenta 43...
Page 2: Table Of Contents
CONTENTS WHAT TO DO WHEN ....................... 1 to 3 SERVICE ACCESS FACE COVER ........................4 FRONT COVER ........................5 REAR COVER ........................6 MECHANICAL ADJUSTMENT TOP TENSION ........................7 BOBBIN TENSION ......................... 8 PRESSER BAR HEIGHT ALIGNMENT ................... 9 NEEDLE SWING ........................10 NEEDLE DROP ........................
Page 3 TROUBLESHOOTING PROBLEM CAUSE REMEDY REFERENCE 1. Skipping 1. Needle is not inserted Insert the needle properly. stitches properly. 2. Needle is bent or worn. Change the needle. 3. Incorrectly threaded. Rethread. 4. Needle or thread are Use the recommended sewing inappropriate for fabric being needle and thread.
Page 4 PROBLEM CAUSE REMEDY REFERENCE 3. Breaking 1. Initial sewing speed is too fast. Start with medium speed. upper thread 2. Thread path is incorrect. Use the proper thread path. 3. Needle is bent or dull. Replace with a new needle. 4.
Page 5 PROBLEM CAUSE REMEDY REFERENCE 6. Noisy 1. Backlash between shuttle hook See mechanical adjustment P. 13 operation gear and lower shaft gear is “Clearance between needle and too great. shuttle race (NO. 2).” 2. Lower shaft gear is loose. Eliminate the looseness. 3.
Page 6: Service Access
SERVICE ACCESS (1) FACE COVER TO REMOVE 1. Remove the face cover by removing the setscrew (A). TO ATTACH 2. Follow the above procedure in reverse.
Page 7: Front Cover
SERVICE ACCESS (1) FRONT COVER Dial Front cover TO REMOVE 1. Remove the face cover (see page 4). 2. Remove the dials. 3. Loosen the setscrew (A), (B), and (C), and then, remove the front cover by removing the setscrews (D), (E), (F), (G), (H), (I), and (J). Note: Unhook the tab (K) from the rear cover when removing the front cover.
Page 8: Rear Cover
SERVICE ACCESS (4) REAR COVER Rear cover TO REMOVE 1. Remove the face cover and front cover (see pages 4 to 5). 2. Loosen the setscrews (A), (B), and (C), and remove setscrews (D), (E), and (F). 3. Pull up the spool pins. Remove the machine socket. Remove the rear cover clearing the presser foot lifter from the slit on the cover.
Page 9: Mechanical Adjustment
MECHANICAL ADJUSTMENT TOP TENSION TO CHECK: The standard upper thread tension should be 65 to 95 grams-force when pulling the thread (cotton thread #50) in the direction of (B) with setting the tension dial at "3". (make sure the foot should be lowered.) If the tension is out of the standard range, adjust it as follows: ADJUSTMENT PROCEDURE: 1.
Page 10: Bobbin Tension
MECHANICAL ADJUSTMENT BOBBIN TENSION TO CHECK: Set the bobbin in the bobbin case and pass the thread (cotton #50) through the tension spring. The bobbin thread tension should be 32 to 38 grams-force when pulling the thread in the direction of (B). If the tension is out of the range, adjust it as follows: ADJUSTMENT PROCEDURE: 1.
Page 11: Presser Bar Height Alignment
MECHANICAL ADJUSTMENT PRESSER BAR HEIGHT AND ALIGNMENT TO CHECK: 1. Raise the presser foot lifter (A). 2. The distance between the presser foot (D) and the needle plate (E) should be 6.0 mm. ADJUSTMENT PROCEDURE: 1. Remove the face cover (see page 4). Remove the setscrews (B) and the face plate set plate. 2.
Page 12: Needle Swing
MECHANICAL ADJUSTMENT NEEDLE SWING TO CHECK: Adjust the needle swing according to the following procedure, If the needle bar starts moving sideways while the needle is in the fabric when sewing the zigzag pattern (with the maximum zigzag width). ADJUSTMENT PROCEDURE: 1.
Page 13: Needle Drop
MECHANICAL ADJUSTMENT NEEDLE DROP TO CHECK: When the needle swings in the maximum zigzag width, the distance between both ends of the needle hole on the needle plate and the needle drop positions should be equal. If not, adjust as follows: ADJUSTMENT PROCEDURE: 1.
Page 14: Clearance Between Needle And Shuttle Race (Adjustment Method No. 1)
MECHANICAL ADJUSTMENT CLEARANCE BETWEEN NEEDLE AND SHUTTLE RACE (ADJUSTMENT METHOD NO. 1) TO CHECK: The clearance between the needle and shuttle race should be –0.05 to +0.10 mm. If not, adjust as follows: ADJUSTMENT PROCEDURE: 1. Remove the face cover (see page 4). 2.
Page 15: Clearance Between Needle And Shuttle Race (Adjustment Method No. 2)
MECHANICAL ADJUSTMENT CLEARANCE BETWEEN NEEDLE AND SHUTTLE RACE (ADJUSTMENT METHOD NO. 2) TO CHECK: Use this adjustment method NO. 2 if the clearance cannot be adjusted by the method NO.1. The clearance between the needle and shuttle race should be –0.05 to +0.10 mm. ADJUSTMENT PROCEDURE: 1.
Page 16: Feed Dog Height
MECHANICAL ADJUSTMENT FEED DOG HEIGHT TO CHECK: 1. Lower the presser foot. 2. Turn the handwheel toward you to bring the feed dog to its highest position. The height of the feed dog from the needle plate should be 0.75 to 0.90 mm. If it is not in the range, adjust as follows.
Page 17: Needle Bar Height
MECHANICAL ADJUSTMENT NEEDLE BAR HEIGHT TO CHECK: When the tip of shuttle hook meets the left side of the needle in ascending travel of the needle from its left and lowest position. ADJUSTMENT PROCEDURE: 1. Remove the face cover (see page 4). 2.
Page 18: Needle Timing To Shuttle
MECHANICAL ADJUSTMENT NEEDLE TIMING TO SHUTTLE TO CHECK: The height of the needle point from its lowest point of travel should be in the range of 1.45 to 1.95 mm when the tip of the shuttle hook just meets the left side of the needle at the left needle position. ADJUSTMENT PROCEDURE: 1.
Page 19: Buttonhole Feed Balance
MECHANICAL ADJUSTMENT BUTTONHOLE FEED BALANCE TO CHECK: When sewing buttonhole, the stitches on each side of buttonhole should be the same stitch density. The range of 9 to 12 stitches in the right side row "backward feeding" against 10 stitches in the left side row "forward feeding"...
Page 20: Feed Balance On Stretch Stitch
MECHANICAL ADJUSTMENT FEED BALANCE ON STRETCH STITCH TO CHECK: If the stretch stitch patterns are distorted with setting the stitch length dial at " S.S. ". If there is a difference between forward feeding and backward feeding during stretch stitch patterns, make an adjustment as follows: ADJUSTMENT PROCEDURE: 1.
Page 21: Buttonhole Function
MECHANICAL ADJUSTMENT BUTTONHOLE FUNCTION The standard buttonhole size is 3 mm longer than the actual button size when sewing with the automatic buttonhole foot. Adjusted as follows: ADJUSTMENT PROCEDURE: 1. Attach the buttonhole foot (R). 2. Pull down the BH lever. Turn the adjusting screw (D) until the BH lever knob slightly touches the end of the stopper.
Page 22: Disengagement Of Cam Follower
MECHANICAL ADJUSTMENT DISENGAGEMENT OF CAM FOLLOWER TO CHECK: If the clearance between the cam follower and the top convex of the zigzag cam is not enough, the pattern selector dial is blocked or will not select the correct pattern. ADJUSTMENT PROCEDURE: 1.
Page 23: Motor Belt Tension
MECHANICAL ADJUSTMENT MOTOR BELT TENSION TO CHECK: 1. If the motor belt tension is too tight or too loose, it can cause a belt noise: If the tension is too tight, it can cause the machine to run slowly and the motor to overload; if the tension is too loose; it can cause the belt to jump. 2.
Page 24: Wiring
WIRING 1. Remove the rear cover (see page 6). 2. Remove the setscrews (A), (B) and machine socket cover. 3. Follow the above procedure in reverse. Machine socket cover Machine socket unit 120V 240V Motor cord Cord from printed Cord from printed Motor cord circuit board C (LED) circuit board C (LED)
Page 25 PARTS LIST...
Page 26 MODEL: Magenta 43 PARTS LIST Page 10 No. 12...
Page 27 MODEL: Magenta 43 PARTS LIST PARTS DESCRIPTION 306601004 Rear cover (unit) 306101009 Rear cover 652302004 Spool pin (hole) 652205006 Spool pin (no hole) 736007009 Spool pin spring 000161206 Setscrew 3x10 (B) 735013005 Spool pin spring base 730006000 Spring 000101404 Setscrew 4x6...
Page 28 MODEL: Magenta 43 PARTS LIST...
Page 29 MODEL: Magenta 43 PARTS LIST PARTS DESCRIPTION 308611601 Presser bar base plate (unit) 308060001 Presser bar base plate 743212001 Needle drop adjusting plate 000101404 Setscrew 4x6 000070506 Washer 4 000138307 Bolt 4x8 303017101 Presser bar 735027002 Presser bar spring 735028003...
Page 30 MODEL: Magenta 43 PARTS LIST...
Page 31 MODEL: Magenta 43 PARTS LIST PARTS DESCRIPTION 743678205 Needle bar supporter (unit) 743246004 Needle bar supporter 311622007 Needle bar (unit) 311502000 Needle bar connecting stud (unit) 311611106 Needle threader guide plate (unit) 311027006 Needle threader guide plate 311032107 Needle threader shaft plate...
Page 32 MODEL: Magenta 43 PARTS LIST...
Page 33 MODEL: Magenta 43 PARTS LIST PARTS DESCRIPTION 304607004 Upper shaft (unit) 102073003 Setscrew 000036717 Thrust washer 732025001 Upper shaft front bushing 639095000 Ring 000111304 Hexagonal socket screw 5x5 660113001 Worm 000111201 Hexagonal socket screw 4x4 761052007 Setscrew 731312005 Felt 000172602...
Page 34 MODEL: Magenta 43 PARTS LIST...
Page 35 MODEL: Magenta 43 PARTS LIST PARTS DESCRIPTION 740010008 Handle supporter 000081005 Setscrew 4x8 735017308 Handle 740624001 Carrying handle shaft (unit) 740011009 Handle shaft 000002105 Snap ring E-3 740602209 Bobbin winder supporter (unit) 740003101 Bobbin winder base plate 735501005 Bobbin winder arm (unit)
Page 36 MODEL: Magenta 43 PARTS LIST...
Page 37 MODEL: Magenta 43 PARTS LIST PARTS DESCRIPTION 744004001 Needle plate 681009101 Setscrew 735950003 Lower shaft gear (unit) 000110107 Hexagonal socket screw 5x5 (WP) 000036201 Washer 735233003 Bushing 735234004 Bushing 000111304 Hexagonal socket screw 5x5 000172602 Setscrew 5x8 735061101 Feed lifting cam...
Page 38 MODEL: Magenta 43 PARTS LIST 15 16...
Page 39 MODEL: Magenta 43 PARTS LIST PARTS DESCRIPTION 735612000 Feed rock shaft (unit) 735078008 Feed rock shaft 735079009 Feed bar 735080003 Feed bar shaft 000002507 Snap ring E-4 000111201 Hexagonal socket screw 4x4 735081004 Feed dog 735082005 Setscrew 735083006 Feed bar spring...
Page 40 MODEL: Magenta 43 PARTS LIST...
Page 41 MODEL: Magenta 43 PARTS LIST PARTS DESCRIPTION 311610105 Machine sokcet (whole unit) 743671002 Motor assembly (unit) including bracket 025601004 Motor with pully 739503308 Machine socket (unit) 508134003 Insulating paper 508512102 Printed circuit board C (unit) 000060802 Nut 3-1-5.5 Setscrew 3x8 (B)
Page 42 MODEL: Magenta 43 PARTS LIST...
Page 43: Parts List
MODEL: Magenta 43 PARTS LIST PARTS DESCRIPTION 306870198 Accessory set 647803004 Screwdriver 102261000 Bobbin 647808009 Seam ripper 639804000 Needle set (unit) 740801004 Automatic buttonhole foot 611406002 Zipper foot 737801015 Satin stitch foot 620404008 Overcasting foot 045501005 Foot control 306801648 Instruction book...