JUKI HZL - 353Z Series Скачать руководство пользователя страница 10 | Manualshive

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5-1 Symbol instructions

5. Adjusting methods of each part

Noise occur while the machine is running.

Skip-over stitching, needle breakage, and problems associated with needle.

Delivery of cloth to be in disorder and insufficient, problems associated with delivery
amount.

Stitch tightening problem.

BH right and left stitching is not even, incorrect length and problems associated with
buttonhole sewing.

Bobbin winding problem.

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Содержание HZL - 353Z Series

Страница 1: ...SEWING MACHINE HZL 350Z series SERVICE MANUAL ...

Страница 2: ...at maximum zigzag width 12 5 6 Drop middle point of needle 13 5 7 Needle position of zigzag 14 5 8 Automatic needle threader adjustment 15 5 9 Adjustment of feed rock shaft and feed lifting rock cam 16 5 10 Height of needle bar 17 5 11 Timing of needle and hook 18 5 12 Distance needle hook 19 5 13 Play between shuttle driver shaft gear and lower shaft gear 20 5 14 Play of shuttle driver shaft 21 5...

Страница 3: ...f zigzag mm Face plate upper plate Sewing table LED lamp Speed control device Power supply switch Hard case Nos of accessories Lower thread remainder indicator Free arm 177 x 410 x 308 mm 7 1 Only machine 750 50 70W Series wound AC Electric type Center and left position Multiple player cams conversion type Horizontal hook Slit type Two steps type Auto type Screw fixing type Top of upper plate incl...

Страница 4: ...3 2 Out look ...

Страница 5: ... Stitch length dial 12 Bobbin winder spindle 13 Bobbin winder stopper 14 Stitch display 15 Reverse lever 16 Handwheel 17 Patten selector dial 18 Buttonhole balance control dial 19 Main switch 20 Main plug socket 21 Hole for second spool pin 22 Spool pin 23 Handle 24 Bobbin thread guide 25 Upper thread guides 26 Presser foot lever 27 Drop feed control 5 One step buttonhole lever 6 Automatic threade...

Страница 6: ...ate Remove screw a and remove the face plate 2 4 3 Cord reel cover Lay down machine Remove 1 cushion rubbers b Remove 4 screws c d e f 3 Remove cord reel cover 4 4 Belt cover Remove the screw g Remove the patten selector dial Remove belt cover 4 4 Removing methods of external parts Patten selector dial ...

Страница 7: ... foot bush 5 4 6 Free arm cover Remove 2 screws l m and remove the free arm cover 6 4 7 Front cover Remove face plate arm top cover sewing box complete cord reel cover belt cover and free arm cover and free arm foot bush first Lift handle and remove 2 screws n o 7 Loosen screw p about 3mm 8 8 p l Free arm cover m 6 o ...

Страница 8: ...lly because the leader wire and the body are connected together Remove screw r 11 Loosen screw q about 3mm 9 First using electric torch flash light etc to locate screw q position which deeply inside the machine Note 1 Front cover Note 2 To reach the screw q use Philips type screwdriver through the operation hole on plate 10 ...

Страница 9: ...8 Back cover 4 8 Back cover Remove 2 screws s t 13 Loosen screw u about 3mm 14 Remove screw v Loosen screw w about 3mm Remove the back cover 15 w u v t s ...

Страница 10: ...stitching needle breakage and problems associated with needle Delivery of cloth to be in disorder and insufficient problems associated with delivery amount Stitch tightening problem BH right and left stitching is not even incorrect length and problems associated with buttonhole sewing Bobbin winding problem 9 ...

Страница 11: ...5 2 Play of arm shaft Remove the face plate and arm top cover Remove the 2 screws a b of arm shaft collar A 1 Pull hand wheel backward Push arm shaft collar A to left tightly against arm shaft bushing B and then fasten and secure screws a b 1 Be sure proper distance between arm shaft collar and arm shaft bushing 2 Be sure arm shaft operates smoothly after adjustment Arm shaft collar and arm shaft ...

Страница 12: ...bar lifter lever A 1 Place gauge B 6 0 6 2mm on top of needle plate 2 Loosen screw a of presser bar bracket 3 Pull down presser bar lifter lever so bottom of presser foot and top surface of gauge would meet Secure tightly screw a The correct setting of gauge should be 6 0 6 2mm 3 ...

Страница 13: ...r upward The vertical distance in which the needle point goes up at the left position from the top of the needle plate should be 3 5mm 1 Tighten the screw a after making sure the needle flow is between 3mm to 5mm If needle flow is less than 3 mm loosen the screw of arm shaft worm a b to turn arm shaft worm A backward 2 If needle flow is more than 5mm turn arm shaft worm A frontward 2 b backward fo...

Страница 14: ...of needle Choose patterns zigzag 0 mm Remove face plate Loosen screw a of needle bar driving rod pin b 1 Adjust needle by pushing b clockwise counter clockwise Make sure needle drops on middle of needle hole After adjusting re tighten screw 2 a b 1 ...

Страница 15: ... bar driving rod pin 1 Adjust needle by turning b clockwise counter clockwise Clockwise left Counter clockwise right Make sure needle drops on left right of needle hole with even distance to the edge of needle hole and then fasten the screws a 2 After the adjustment of z z needle position re confirm the needle position of zigzag ...

Страница 16: ...s damaged change new one If it is inclined adjust the threader hook properly i Remove face plate and turn hand wheel to raise needle bar to its highest position ii Loosen screw a of the threader stopper iii Move the stopper upward and the threader hook will become higher Move the stopper downward and the threader hook will become lower iv Adjust the stopper to the proper position for entering need...

Страница 17: ...ill shift another 0 5 1mm before stop 1 Check the lower shaft bushing inner screw a feed rock cam inner screw b on the same horizontal Check screw c of feed rock cam must screw b of feed rock cam 2 If not Loosen the screw b of feed rock cam and adjust the screw b to be parallelled with the screw a Loosen the screw c of feed rock cam and adjust and the be lower 1 mm than the the distance to be 1 mm...

Страница 18: ... loose the needle bar bracket a to adjust the needle bar s E position for measuring the correct height of needle bar Lift the needle bar will cause insufficient height of needle bar Pull down the needle bar and the height of needle bar will too deep 3 Fasten the screws a after confirming the height of needle bar When the needle position is on the lowest point the distance between the top of needle...

Страница 19: ... tighten its screw d but still allowing movement by hand 2 Place gauge Height 4 0mm B between the needle bar support and clamp move clamp B to hold the gauge C and tighten screw d 2 Remove gauge C turn hand wheel to lift needle bar till the clamp B reach the top 3 Turn the hand wheel until the shuttle hook holder point is on the right side of needle the distance between needle and hook holder shou...

Страница 20: ...ards the lowest point of right side and lift it make sure if space between needle and the tip of the shuttle hook holder should be 0 05 0 1mm 1 If the space is incorrect Loosen the screw a of the needle bar supporter Push the needle bar supporter A backward and the space will become larger Push the needle bar supporter toward and the space will become smaller 2 backward forward ...

Страница 21: ...en three set screws a b c of the lower shaft gear A and move the lower shaft gear to right or left against axial direction But the lower shaft gear never get out of shuttle hook gear B When the playing of the shuttle hook holder should be within 0 5 mm tighten three set screws a b c Make sure match timing of needle and hook If not please adjust according 5 11 see page 18 ...

Страница 22: ...late E and adjust the plate to the proper position Finally Re tighten the screws 2 When you turn the hand wheel clockwise the shuttle hook C will move to rotary hook plate E and generate the play between the shuttle hook and the rotary hook plate D Using the gauge B to test the play and the standard is 0 6 mm to 1 0 mm If the play is incorrect loosen 2 screws c d of rotary hook plate D and adjust ...

Страница 23: ...9 1 05mm on needle plate The feed dog height then can be checked 1 Press reverse button At the correct height 0 9mm the feed dog will be moved freely forward and backward Turn screw a of feed rock crank clockwise counter clockwise to adjust height of the feed dog between 0 9 1 05mm 2 Clockwise raise the feed dog Counter clockwise lower the feed dog ...

Страница 24: ... feed crank shaft A that is on the right side Loosen the screw b of the feed crank shaft B that is on the left side Adjust feed dog to center position by moving feed crank shaft B left right in accordance with feed rock shaft C left right 3 Tighten screw b to fix the left side of feed crank shaft B Push right side feed crank shaft A to left and fasten the screw a ...

Страница 25: ...ension disk Adjust tension by turning plastic screw a of dial tension regulator frontward backward 4 Frontward weaker Backward stronger Re check the standard range should be 50 60g Lift the presser foot lever first and then put the thread of tension into the 2 Lower the presser foot and pull down along the threading direction on the cover The standard range should be 50 60g 3 3 4 A ...

Страница 26: ... 1 Put dial tension thread into shuttle hook the same way as inserting the bobbin Pull it out the standard range should be 18 22g 2 Adjust the screw a of shuttle hook to correct it if necessary 3 Turning clockwise makes dial tension stronger turning counter clockwise makes it weaker Re check the standard tension range should be 18 22g 3 ...

Страница 27: ...nt should be 200g 1 Adjusting the belt adjusting plate B to regulate the improper belt s tension The way to adjust is as following Loosen the screw a of adjusting plate B and then move it to right the belt will become tighter move it to left it will become more loosen 2 Tighten screws a after confirming the proper belt tension 4 6 m m ...

Страница 28: ... speed and step on the foot controller lightly Check if the needle can drop in the same place while moving forward and backward If the drop point are not the same take apart the plate A 2 If the stitch is too tight adjust the screw of feed crank a anti clockwise and the needle will go frontward 3 4 If the stitch is too loose adjust the screw of feed crank a clockwise and the needle will go backwar...

Страница 29: ...belt cover Set stitch length dial at 0 5 to 1 To sew by using thread in effect to confirm delivery amount of forward and backward 1 If forward and backward delivery amount not match adjust by turning screw a of pattern cam contact plate clockwise counter clockwise 2 Counter clockwise strong Clockwise weak 28 1 2 Correct Incorrect Incorrect ...

Страница 30: ...th dial at 0 5 to 1 To sew by using thread in effect to confirm delivery amount so that buttonhole upper or lower stitching may not advance 1 To adjust by turning screw a of BH adjusting lever clockwise counter clockwise 2 Turning clockwise direction when lower stitching advances Turning counter clockwise direction when upper stitching advances ...

Страница 31: ...e button on needle plate and secure with BH presser foot To sew by using thread in effect to confirm if length of BH stitching is equal to length of button 1 Loosen screw a of BH positioned plate A to adjust length of buttonhole sewing by moving plate A downward upward 2 Upward when buttonhole length too short Downward when buttonhole length too long ...

Страница 32: ...ve the shape of bobbin winding When the lower part of bobbin winding is thicker turn the screw a of threader guide counter clockwise 2 When the upper part of bobbin is thicker turn the screw a of threader guide clockwise Observe the intensity If bobbin winding is not 80 percent full adjust by turning the screw b of bobbin winder bracket shaft clockwise 3 If bobbin is over 80 percent full adjust by...

Страница 33: ...32 Europe 6 Circuit diagram ...

Страница 34: ...33 North America 6 Circuit diagram ...

Страница 35: ...030Y4B0101 EN ...

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