promelectroavtomat XL2120 Service Manual Download Page 42

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Adjustment

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ion and

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21.Adjustment of the Thread Winding

(Uneven Bobbin Winding and Amount of Thread Winding)

Move the thread winding guide assembly up or down to adjust and correct for uneven bobbin winding.

(Uneven bobbin winding)

Rotate the bobbin presser to adjust the amount of thread winding. (As a guideline of thread winding amount,

a bobbin should be wound up to 80 to 90% of the external diameter of the bobbin.)

80 - 90%

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Summary of Contents for XL2120

Page 1: ...SERVICE MANUAL FOR XL2120 XL2121 XL2130 XL2140 XL2220 XL2230 XL2240 XL2250 7 2003 www promelectroavtomat ru...

Page 2: ...tment 3 7 Adjustment of the zigzag width for BH Right Over Edging 3 8 Adjustment of the Feeding for BH Right Over Edging Adjustment of Satin Feeding 3 9 Forward Reverse Adjustment of the Super Stitch...

Page 3: ...e screws fastening the front cover one in the front giza tite 5 16 and six in the back five giza tite M 5 16 and one giza tite M 3 32 to remove the front cover 5 Remove the two screws taptite bind B M...

Page 4: ...unit 5 21 mm 11 Remove the four screws three giza tite 5 16 and one step screw that fasten the selection unit and remove the selection unit 12 Remove the two screws giza tite 5 16 securing the lower...

Page 5: ...ring the needle bar presser unit assembly and then remove the upper shaft assembly and the needle bar presser unit assembly 19 Remove the tension belt and the motor belt from the needle bar presser un...

Page 6: ...a tite 5 16 to remove the motor 25 Remove the two screws screws pan S P washer M 3 20 to remove the three pole lamp socket 26 Remove the two screws taptite bind B M 4 10 to remove the Plate apring the...

Page 7: ...lling it out to the right and them remove the thread take up lever supporter and the dome spring washer 3 Remove the thread take up lever body and the needle bar crank from the thread take up lever su...

Page 8: ...thread take up lever supporter and the stud for thread take up lever supporter 9 Loosen the screw set screw socket CP M 5 8 securing the presser bar clamp to remove the presser bar 10 Remove the one s...

Page 9: ...Remove the one screw screw bind M 3 4 and remove the feed auxiliary plate 10 Remove the three screws screw bind M 3 6 to remove the metal retainer B 11 Remove the metal 12 Remove the retainer ring E6...

Page 10: ...4 Remove the thread tension adjusting screw from the thread loosening plate 5 Remove the following items in the following order the spring the washer the tension spring receptacle the thread tension s...

Page 11: ...r set the thread conductor and secure with the two screws taptite bind B M 4 12 2 Insert the tip of the wire of the thread conductor B assembly by aligning it against the positioning groove of the fro...

Page 12: ...taptite bind B M 4 10 4 Place the foot of the motor holder underneath the motor and secure it with the two screws one giza tite 3 10 and two giza tite 5 16 5 Fasten the three pole socket assembly with...

Page 13: ...sion belt and the motor belt to the upper shaft assembly and the needle bar presser unit assembly 11 Attach the upper shaft assembly and the needle bar presser unit assembly to the front cover and sec...

Page 14: ...nting position on the rear cover 16 Secure the selection unit with the four screws three giza tite 5 16 and one giza tite 5 16 17 Install the worm pulley of the selection unit 18 Attach the ends of th...

Page 15: ...ite 5 16 and six in the back five giza tite 5 16 and one giza tite 3 32 to secure the front cover 25 Attach the selection dial on the front face of the front cover 26 Fasten the face plate with the on...

Page 16: ...nsion dial to 9 and attach the thread tension dial shaft 4 Align the notch spring against the oval hole and secure it with the screw screw pan M 3 4 5 Attach the thread take up spring in the second ho...

Page 17: ...ad take up lever supporter 7 Insert the dome spring washer into the stud for thread take up lever supporter with its convex side facing the retaining ring 8 Insert the thread take up lever supporter i...

Page 18: ...bar supporter stud holder and attach the retaining ring E2 19 Insert into the U groove of the base holder of the needle bar supporter stud holder and temporarily fasten with the one screw bolt socket...

Page 19: ...he base plate 5 Attach the lower shaft metal on the left of the lower shaft set the metal retainer B and secure with the three screws screws bind M 3 6 6 After attaching the thrust washer and the set...

Page 20: ...etween the vertical adjuster and the vertical finger 17 Attach the feed tension spring on the feed base and the base plate 18 Align the protrusion of the feed auxiliary plate B against the groove in t...

Page 21: ...Verify that there is reasonable backlash between the rotary hook and the lower shaft The backlash along the perimeter should be 0 8 mm max 26 Attach one end of the backlash eliminating spring to the s...

Page 22: ...sen the screw Screw pan S P washer M 4 8 DA fastening the tension pulley holder 2 Adjust the belt tension by moving the tension pulley holder up or down 3 Tighten the screw Screw pan S P washer M 4 8...

Page 23: ...k of 4 to 6 mm 1 Loosen the two screws Bolt S P washer M 5 12 fastening the motor holder 2 Adjust the belt tension by moving the motor holder up or down 3 Tighten the two screws Bolt S P washer M 5 12...

Page 24: ...needle plate 2 Loosen the screw Bolt socket size M 3 6 securing the stopper 3 Adjust the stopper left or right so that the needle point does not contact the needle plate when the needle bar support is...

Page 25: ...ction dial to select the maximum zigzag width 2 Match the position of the gear hole to that of the oval part of the frame 3 Loosen the two screws Set screw socket FT size M 4 4 securing the worm pulle...

Page 26: ...the screw Screw pan S P washer M 3 8 DB beside the Z linkage and adjust the zigzag width so that it is equally divided on the right and the left sides of the needle hole in the needle plate If the scr...

Page 27: ...esser lever and attach a cover 2 Turn the pulley by hand to insert the tip of the needle into the needle hole 3 Loosen the Bolt socket M 3 6 4 Adjust the needle bar supporter stud holder left or right...

Page 28: ...l to select the BH left over edging BH b 3 Insert a piece of paper under the BH presser foot 4 Turn the pulley to pierce the paper with the needle and take a measurement for verification 5 Loosen the...

Page 29: ...he needle 5 While holding the piece of paper by hand turn the selection dial to select the BH right over edging BH d 6 Hold the piece of paper by hand and turn the pulley to pierce the paper with the...

Page 30: ...t over edging BH d 3 Set the slit for fine adjusting knob to vertical position 4 Insert a piece of paper under the BH presser foot 5 Turn the pulley to pierce the paper with the needle and take a meas...

Page 31: ...he triple zigzag stitching 3 Set a piece of paper and turn the pulley to check the needle down condition 4 Loosen the screw Screw pan M3 8 within the selection dial Lower left screw 5 Turn the screw w...

Page 32: ...ower the presser lever and attach a cover 2 Turn the pulley by hand to insert the tip of the needle into the needle hole 3 Adjust the amount of tightening of the adjusting screw to bring the tip of th...

Page 33: ...down position 4 Loosen the two screws Set screw socket FT M5 5 on the lower shaft pulley 5 Adjust assembly of the lower shaft and the lower shaft pulley so that the right edge of the needle and the ro...

Page 34: ...presser lever and attach a cover 2 Select the maximum zigzag width 3 Turn the pulley until the perimeter of the needle is even with the rotary hook point near the left needle drop position 4 Loosen th...

Page 35: ...ould be 0 1 mm or less 1 Attach a J presser foot lower the presser lever and attach a cover 2 Select the maximum zigzag width 3 Turn the pulley until the right most edge of the needle is even with the...

Page 36: ...er lifter 3 Turn the pulley until the feed dog is lowered below the needle plate A 4 Loosen the screw Set screw socket CP M 5 8 on the presser bar clamp assembly 5 Adjust the presser bar height so tha...

Page 37: ...move the feed dog to its highest position 3 Adjust the amount of tightening of the bolt socket M 4 4 until the feed dog is exposed 0 9 to 1 1 mm above the top surface of the needle plate A 4 Check tha...

Page 38: ...ouch the needle plate gap being 0 1 mm min when the feed amount is maximum 1 Attach a J presser foot lower the presser lever and attach a cover 2 Remove the screw and then the needle plate A 3 Loosen...

Page 39: ...g the inner rotary hook rotation prevention bracket assembly 3 Adjust the position of the inner rotary hook rotation prevention bracket assembly so that the overlap distance between the inner rotary h...

Page 40: ...to 4 3 Thread a schappe spun sewing thread 60 through the thread guide and the thread tension disc 4 Lower the presser lifter 5 Adjust the tightening amount of the thread tension adjusting screw so th...

Page 41: ...wing thread 60 in the inner rotary hook and put a thread through 2 Adjust the tightening amount of the spring tension adjusting screw so that the thread tension is 0 10 to 0 12 N 10 to 12 g when pulle...

Page 42: ...e the thread winding guide assembly up or down to adjust and correct for uneven bobbin winding Uneven bobbin winding 2 Rotate the bobbin presser to adjust the amount of thread winding As a guideline o...

Page 43: ...XL2120 21 30 40 XL2220 30 40 50 29F03HF885S22 23 www promelectroavtomat ru...

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