background image

20

12. Differential Feed Ratio

The main and sub feed dogs should move uniformly 
together when the stitch length dial is set at 3 and 
differential feed dial at 1.0.

z

 Remove the belt cover (see page 3).

x

 Set the stitch length dial at 

3

 and differential feed dial 

 at 

1.0.

c

 Turn the adjusting screw 

q

 to adjust the differential 

  feed ratio.
  If the sub-feed dog moves less than the main feed 
  dog does, turn the adjusting screw clockwise.
  If the sub-feed dog moves more than the main feed 
  dog does, turn the adjusting screw counterclockwise.

NOTE:

When the differential feed ratio is properly adjusted, the 
feed link 

w

 become horizontal.

v

 Attach the belt cover.

w

q

Summary of Contents for CoverPro 3000 PROFESSIONAL

Page 1: ...SERVICE MANUAL PARTS LIST MODEL CoverPro 3000 PROFESSIONAL Continental Europe Australia UK Sixth Edition 12 October 2021...

Page 2: ...8636003 P49 5 778108012 778108001 Modified 14 July 2021 Service manual modified Modified 20 August 2021 P31 NOTE Insert the 2 mm spacer o between the ring 0 and top cover stitch cam 1 to adjust the cl...

Page 3: ......

Page 4: ...16 Rear Needle Guard Height 17 Needle to Feed Dogs Timing 18 Stitch Length 19 Differential Feed Ratio 20 Thread Tension 21 Motor 22 Thread take up lever 23 Replacing the needle threader 24 Adjusting...

Page 5: ...16 Rear Needle Guard Height 17 Needle to Feed Dogs Timing 18 Stitch Length 19 Differential Feed Ratio 20 Thread Tension 21 Motor 22 Thread take up lever 23 Replacing the needle threader 24 Adjusting...

Page 6: ...move the setscrew q Place your finger in the groove w and slide the lamp arm cover e to the right Remove the setscrew r Disconnect the connector A t and connector B y Remove the face cover u To attach...

Page 7: ...To remove z Raise the carrying handle q Remove the setscrews w 2 pcs Remove the hooks e 6 pcs Remove the top cover r To attach x Follow the above procedures in reverse w w q e r r e r q Replacing the...

Page 8: ...3 3 Belt Cover To remove z Remove the setscrew q Loosen the setscrews w 2 pcs Remove the belt cover e To attach x Follow the above procedures in reverse w w q e Replacing the External Parts...

Page 9: ...m Cover To remove z Pull the extension table q away from the machine Remove the setscrews w 3 pcs Remove the free arm cover e To attach x Follow the above procedures in reverse w e q Replacing the Ext...

Page 10: ...r Cover To remove z Remove the setscrews q 2 pcs Remove the looper cover w with a hinge attached To attach x Follow the above procedures in reverse q w w View from the bottom side Replacing the Extern...

Page 11: ...cs Remove the hinge screws w 3 pcs washers 5 e 3 pcs rubber feet r 3 pcs and rubber foot washers 3 pcs t Remove the setscrews y 3 pcs Remove the base plate u To attach x Follow the above procedures in...

Page 12: ...e arm cover and looper cover see pages 1 to 5 x Loosen the setscrews q w 2 pcs Remove the setscrews e 2 pcs Disconnect the connector r Remove the front cover t To attach c Follow the above procedures...

Page 13: ...free arm cover see pages 1 2 and 4 x Remove the setscrews q 2 pcs Remove the spool stand w Remove the setscrews e 2 pcs Remove the setscrews r 2 pcs Remove the rear cover t To attach x Follow the abov...

Page 14: ...sen the hexagonal socket screw q Place a block 5 mm w thick under the presser foot and lower the presser foot lifter e c Tighten the hexagonal socket screw q firmly NOTE Make sure that the presser foo...

Page 15: ...10 2 Presser Foot Pressure The pressure adjusting screw should protrude 10 mm from the top of the machine z Turn the adjusting screw q to set its height at 10 mm 10 mm q...

Page 16: ...ion z Remove the face cover and top cover see pages 1 to 2 x Replace the left needle with Schmetz ELx705 size 80 12 needle q c Turn the handwheel toward you to raise the needle bar to the highest posi...

Page 17: ...e z Set the stitch length dial at 3 and differential feed dial at 1 0 x Lower the presser foot and turn the handwheel toward you to raise the feed dog to its highest position c Open the looper cover P...

Page 18: ...ng q c Turn the handwheel toward you to bring the looper w to its rightmost position v Pull the looper release knob e and turn the looper to the left Loosen the setscrew r and move the looper up or do...

Page 19: ...to bring the looper w to its rightmost position v Loosen the setscrew e and move the looper to the left or right to adjust the distance between the test pin and tip of the looper to 2 0 mm NOTE Do not...

Page 20: ...rn the handwheel toward you until the looper point w meets with the right side of the test pin v Loosen the hexagonal socket screws e 2 pcs and turn the looper rocking cam r to match the looper point...

Page 21: ...arm cover see page 4 and needle plate x Turn the handwheel toward you until the looper point q comes behind the needle c Loosen the setscrews w and thrust the front needle guard e against the needle...

Page 22: ...p or down to set the upper edge q 2 8 mm below the lower edge w of the tip of the looper v Turn the handwheel toward you slightly to bring the tip of the looper behind the needle Check the clearance b...

Page 23: ...oward you to lower the needle bar until the tip of the left needle is 2 6 mm above the upper surface of the needle plate q v Loosen the hexagonal socket screws e 2 pcs and turn the feed cam r to adjus...

Page 24: ...t cover see page 3 c Sew 11 stitches on a piece of paper and measure the distance between the first stitch and eleventh stitch 10 stitch length If the stitch length is longer than 32 mm turn the adjus...

Page 25: ...l at 3 and differential feed dial at 1 0 c Turn the adjusting screw q to adjust the differential feed ratio If the sub feed dog moves less than the main feed dog does turn the adjusting screw clockwis...

Page 26: ...the adjusting plate clockwise If the tension is too tight turn the adjusting plate counterclockwise c Attach the front cover belt cover top cover and face cover e r t y u i Pull the adjusting plate e...

Page 27: ...r cord black t and motor cord white y to the connector tabs u 2 pcs 220 to 240V Connect the motor cord brown i and motor cord blue o to the connector tabs 0 2 pcs Attach the machine socket r with the...

Page 28: ...osition z Remove the face cover and top cover see pages 1 and 2 x Turn the handwheel toward you to lower the thread take up lever r to its lowest position c The distance between the U shape q of the t...

Page 29: ...rizontal hook position and the vertical hook position so that the hook w goes through the center needle hole e Adjusting the horizontal hook position Loosen the setscrew r to move the nut t to adjust...

Page 30: ...position left needle Switch the lever to L e Lower the needle threader lever q Turn the needle threader eccentric pin left r left or right to adjust the threader hook position so that the hook w goes...

Page 31: ...ver and rear cover see pages 1 to 4 and 8 x Remove the top cover stitch cam spring q and backlash removal spring w Remove the snap ring e c Lower the top cover stitch lever Remove the setscrews r 3 pc...

Page 32: ...e at its lowest position b Adjust the TC thread guide q position so that the inner edge of TC thread guide w aligns with the right edge of the top cover needle bar thread guide e When the TC thread gu...

Page 33: ...n the handwheel toward you to move the spreader at its rightmost position b Adjust the spreader horizontal position so that the clearance between the inner edge of TC thread guide q and the tip of the...

Page 34: ...s moving from the right side and the tip of the spreader y meets the left edge of the left needle u see Fig 4 If the clearance is larger than 1 2 mm turn the spreader in the direction of A If the clea...

Page 35: ...gonal socket bolt t 2 pcs when the spreader y is at the rightmost position TC thread guide and the spreader position If the TC thread guide is at the front of the spreader Move the TC thread guide u i...

Page 36: ...Lower the top cover stitch lever Remove the presser foot and the foot holder b Remove the setscrew y Remove the center needle thread tension dial u n Turn the handwheel toward you Loosen the hexagonal...

Page 37: ...32 PARTS LIST MODEL CoverPro 3000 PROFESSIONAL Continental Europe Australia UK 3 3 3 3 4 2 5 6 8 8 9 1 7 3...

Page 38: ...ONAL Continental Europe Australia UK 1 2 3 4 5 6 7 8 9 778622006 778104007 784223105 778623007 000115700 000114802 778004A01 000081016 745033002 Spool stand unit Spool stand Spool holder Thread guide...

Page 39: ...3000 PROFESSIONAL Continental Europe Australia UK 1 2 3 4 5 4 5 4 5 4 5 4 5 3 3 3 3 10 8 6 8 9 7 7 9 10 11 10 10 33 16 15 17 15 17 19 15 24 21 23 22 20 18 32 14 32 12 13 34 31 30 15 32 28 15 17 17 15...

Page 40: ...40602006 000014306 778090009 795146004 778127006 000081016 Top cover unit Top cover Thread guide cover Thread guide spring Cushion Carrying handle Handle supporter Handle fixing plate pin Setscrew 3x8...

Page 41: ...36 PARTS LIST MODEL CoverPro 3000 PROFESSIONAL Continental Europe Australia UK 1 2 2 2 4 28 28 23 19 27 25 24 26 26 20 21 22 22 5 3 6 7 7 7 8 8 8 9 10 11 9 9 10 10 11 14 13 15 16 11 2 12 17 17 18 18...

Page 42: ...5 000234603 778603104 778007A01 795102008 000120203 795011009 795013001 795150001 000002105 101638A01 000115607 Free arm cover Setscrew 4x8 Extension table Belt cover Setscrew 4x12 Base plate Rubber f...

Page 43: ...38 PARTS LIST MODEL CoverPro 3000 PROFESSIONAL Continental Europe Australia UK 20 9 10 18 19 3 4 8 6 6 17 6 6 11 12 1 2 14 16 15 20 5 8 6 17 7 13...

Page 44: ...45002 101625A03 101616A04 000081016 Front cover unit Front cover Top cover stitch thread guide 1 Needle thread guide 1 Needle thread guide Setscrew 3x8 B Needle thread guide 3 Setscrew 3x8 B Printed c...

Page 45: ...40 PARTS LIST MODEL CoverPro 3000 PROFESSIONAL Continental Europe Australia UK 1 4 7 7 6 16 15 13 20 15 14 4 3 2 5 12 15 7 7 19 18 17 8 7 11 10 9...

Page 46: ...44008 795034008 000002105 778045009 778051008 778113009 778125004 778608006 Face cover set plate unit Face cover set plate Printed circuit board U unit Setscrew 3x4 Relay harness unit Setscrew TP 4x6...

Page 47: ...erPro 3000 PROFESSIONAL Continental Europe Australia UK 1 2 3 4 5 6 8 8 8 8 8 12 13 13 13 13 13 7 14 44 44 11 11 10 9 15 16 17 32 18 28 29 41 40 38 36 35 37 34 43 42 33 20 25 26 27 27 27 27 21 22 23 2...

Page 48: ...6 Needle thread releasing shaft Snap ring E 4 Cam Needle thread tension release cam Setscrew 4x8 Needle thread tension release lever unit Needle thread take up lever cover unit Needle thread take up l...

Page 49: ...44 PARTS LIST MODEL CoverPro 3000 PROFESSIONAL Continental Europe Australia UK 1 2 3 4 5 6 7 8 9 10 13 15 16 17 18 11 22 23 14 6 12 21 19 25 24 26 27 27 29 28 30 31 6 20...

Page 50: ...per shaft unit Looper shaft Looper unit Front needle guard Setscrew 3x6 Looper shaft ring Looper link arm Looper release knob Setscrew 3x4 Hexagonal bolt 4x16 Looper spring Looper rocking spring Loope...

Page 51: ...46 PARTS LIST MODEL CoverPro 3000 PROFESSIONAL Continental Europe Australia UK 1 5 7 9 8 8 7 6 9 3 10 14 17 17 25 25 22 12 12 23 15 16 17 20 24 21 18 20 19 4 4 2 13 12 11 12 12...

Page 52: ...000002105 Feed adjuster bracket unit Adjusting screw Adjusting screw Adjustable lock nut 4 Stitch length dial Differential feed dial Dial cap Index spring Setscrew 4x6 Spring Setscrew TP 4x8 Setscrew...

Page 53: ...48 PARTS LIST MODEL CoverPro 3000 PROFESSIONAL Continental Europe Australia UK 27 28 29 30 31 36 32 33 34 35 1 2 4 8 9 10 12 19 20 22 24 25 26 23 20 21 18 17 15 13 14 16 11 5 7 2 6 7 3...

Page 54: ...haft unit Felt Hexagonal socket screw 4x4 Top cover stitch cam unit Top cover stitch cam Ring Hexagonal socket screw 4x6 Snap ring E 9 Washer 10 Spring Needle threader take up lever cam Take up lever...

Page 55: ...50 PARTS LIST MODEL CoverPro 3000 PROFESSIONAL Continental Europe Australia UK 1 3 5 4 7 6 7 7 8 6 2 9 11 12 13 10 14 15 7...

Page 56: ...1108 795181012 778514107 795182002 000120203 000115504 000188209 Machine socket whole unit Continental Europe Machine socket whole unit Australia UK Motor unit Continental Europe Motor unit Australia...

Page 57: ...52 PARTS LIST MODEL CoverPro 3000 PROFESSIONAL Continental Europe Australia UK 1 2 3 4 5 6 7 8 10 9 12 11 13 14 15 16...

Page 58: ...778800011 778800022 778800033 795801107 Standard accessories unit Needle case unit Screwdriver large Screwdriver small Tweezers Net Spool cap Lint brush Tension release clip Needle threader Clear view...

Reviews: