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1. PRECAUTIONS BEFORE STARTING OPERATION

1)

Safety precautions

( 1) When turning the power on, keep your hands and fingers away from the area around/under the needle

and the area around the pulley.

(2) Power must be turned off when the machine is not used,.
(3) The power must be turned off before tilting the machine head, installing or removing the "V" belt,

adjusting the machine, or when replacing.

( 4) Avoid placing fingers, hairs bars etc. nears the pulley, "V" belt, bobbin winder pulley, or motor when

the machine is operation. Injury could result.

(5) Do not insert fingers into the thread take-up cover, under/round the needle, or pulley when the ma­

chine is in operation.

( 6) If a belt cover. finger guard, and/or eye guard are installed, do not operate the machine without these

safety devices.

2)

Precaution before Starting Operation

(1) If the machine's oil pan has an oil sun"Ip, never operate the machine before filling it.
(2) If the machine is lubricated by a drop oiler, never operate the machine before lubricating.
( 3) When a new sewing machine is first turned on, verify the rotational direction of the pulley with the

power on.

(The pulley should rotate counterclockwise when viewed from the pulley.)

(4) Verify the voltage and (single or three) phase with those given on the machine nameplate.

3)

Precaution for Operating Conditions

(1) Avoid using the machine at abnormally high ten"Iperature (35 °C  or higher) or low temperatures (5 °C

or lower). Otherwise, machine failure may result.

(2) Avoid using the machine in dusty conditions.

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Summary of Contents for 1988-MDZ

Page 1: ...1988 MDZ Single Needle High Speed Dry Lubricated Lockstitcher With Thread Trimmer Instruction Manual Parts Catalog Artisan Sewing Supplies LLC San Francisco CA 94103 artisan ...

Page 2: ......

Page 3: ...6 Adjusting the thread tension 6 7 Adjustment of upper thread tension 7 8 Adjustment of lower thread tension 7 9 Thread wiper for machine equipped with thread wiper 8 10 How to wind the lower thread on the bobbin 8 11 Ad iustment of feed dog height and inclination 9 12 Adjustment of remaining needle thread length after thread trimming 9 13 Adjustment of feed timing lO 14 Ad i ustment of forward ba...

Page 4: ...ation 6 If a belt cover finger guard and or eye guard are installed do not operate the machine without these safety devices 2 Precaution before Starting Operation 1 If the machine s oil pan has an oil sun Ip neveroperate the machine before filling it 2 If the machine is lubricated by a drop oiler never operate the machine before lubricating 3 When a new sewing machine is first turned on verify the...

Page 5: ...tops as DOWN position Ifthe marks deviate larger 1 Disconnect the plug 12 pins ofcable from than 3nnn adjust as follows the machine head 2 Run the machine and stop at DOWN position 3 While holding the pulley insert the adjusting tool in the hole then remove the tool 3 Confirm the stop operation then the plug 12 pins coming from the machine head into the receptacle 3 PRECAUTIONS FOR STARTING TO OPE...

Page 6: ...e throat plate and clean the feed dog 2 Assembling is to be made by screwing in the screw by 2 to 3rotations by hand at first then tightening them evenly by use of a long size screw driver 3 Lay down the machine head and clean the hook and inner bobbin case b c 3 Maintenance ofmotor Remove dust from the motor filter every one or two month lf operation is continued with the filter clogged with lint...

Page 7: ...r I machine side Install the belt cover for safety purposes Refer to the instructions enclosed with the ac cessones 2 motor side Install the belt cover for safety purposes 4 HOW TO USE THE MACHINE Long groove left 1 How to attach needle Note Before making the following adjustment be sure to switch offthe power source Insert the needle up tO the bottom of needle clamp and tighten the screw keeping ...

Page 8: ...the stitch length shorter 2 If the reverse lever is depressed reverse sewing backward sewing will take place 3 Touchback switch a With the push button touchback switch pressed lightly during sewing reverse sewing can be done Reverse sewmg will take place while the push button is pressed When the push button is released reverse sew ing turns into forward sewing b When the push button is turned 180 ...

Page 9: ... 60 50 to 80 Refer to the table above and adjust according to the stitching conditions the material and thread 5 Adjusting of pressure of presser foot Pressure of the presser foot can be adjusted by turning the pressure regulating thtU11b screw 6 Adjusting of thread tension x x r 0 balanced l In case upper thread switch is too strong or lower thread 1s too weak 6 is too weak or lower thread 1s too...

Page 10: ...hread tension 3 For special fabric sewing with special thread the desired tension can be obtained by adjusting the strength and operating range of thread take up spring 8 Adjusting of lower thread tension I Lower thread tension can be adjusted by screw A 2 In the case of cotton thread 60 the thread ten sion can be checked as the following Hold the end of pulled out tl1reac and if the bobbin case f...

Page 11: ...read as shown in the figure and wind the end ofthe thread clock wise around the bobbin several times then wind the thread on the thread adjuster side counter clock wise several times 3 Press lever CD in the direction ofthe arrow and start the sewing machine 4 The operation will automatically stop when winding is completed 5 Adjustment ofthread winding strength Adjust with the thread adjuster nut 6...

Page 12: ... eccentric shaft CD or loosen the screw on joint and move the joint up and down 3 When the eccentric shaft is set to DOWN posi tion puckering may be avoided and free loop is less like to occur 4 When the eccentric shaft is set to UP position misalignment of fabrics is less likely to occur and yarn severance may be avoided 12 Adjustment of remaining needle thread length after thread trimming I Turn...

Page 13: ... feed dog will rise earlier 4 When the eccentric ring is moved in the direc tion ofb the vertical feed dog will rise later 14 Adjustment of forward backward stitch length 1 Loosen screw CD on the right of the adjustment am1 2 Tum the eccentric shaft and adjust 3 The forward stitch length will increase and the backward length will decrease when the eccen tric shaft is turned counterclockwise 4 The ...

Page 14: ...out from needle after trimming If too small the thread may not be trimmed cor rectly 4 Adjust by adjusting the installation of the fixed knife b Knife engagement amount I When the sewing machine is rotated while the solenoid is activated the knife left will be ro tated by the thread trinmling cam As a standard the knife engagement amount should be 1 5 to 2 0111111 when the knife left moves the mos...

Page 15: ...ll rotation automatic lubrication standard Bobbin case With spring for dry nm prevention Bobbin Stee for thread trimmer Thread trinm1ing method Left knife rotating right knife fixed engagement type Oil lubrication method Automatic lubrication slightly lubricate to hook and needle bar Bed dimensions 475X 178 mm Note Always use a hook and bobbin case dedicated for the thread trimmer use a high quali...

Page 16: ...ED AND ITS A A ARMB CCESSORIES 1 O 1 i 20 12 9 13 1 9 6 15 J jn 72 I 21 21 73 65 38 13 29 30 31 I 35 36 2 f 6f 40 39 I 29 ...

Page 17: ... side cover I A21 HA30780674 Rubber plug ll11 8 4 A22 H 300132090 Rubber plug ll8 8 I A23 I l 307130673 Rubber plug 19 I A24 IIA700B2060 Screw 11 64 40 8 I SM l l 64 40 x8 A25 IIA70082050 Thread guide arm top I 26 H3107G0662 Screw I J 64 40 x8 3 SMI 1 64 40 x8 A27 H6756B8001 Thread cuiter I A28 116762B8001 Screw 9 64 40 x4 5 2 SM9 64 40 x4 5 A29 IIA710B0671 Pre tension adjusting nut 11 64 40 2 SM ...

Page 18: ...ARM BED AND ITS A A 10 11 12 9 7 13 1 9 f 14 l 6 15 16 17 5 4 1 73 72 65 CCESSORIES 20 38 15 29 30 31 35 36 ...

Page 19: ... I A56 HAI1587010 Thumb net revolution stopper I A57 HAI1580703 Thread tension spring D1 0 I A58 HA31080702 Thread tension releasing discs I A59 HAI1580701 Thread tension stud I A60 IIAI1580706 Thread take up spring D0 6 I 61 HA3 IOB0703 Thread tension regulatorbushing I A62 HAI1580708 Screw9 64 40 x4 I SM9 64 40 x4 A63 IIAI15137011 0 ring I A64 1 1672588001 Thread tension releasing pin D2x30 I 65...

Page 20: ...B SEWINGMECHANISM 17 36 34 ...

Page 21: ...re block I Bl5 HA300B2090 Rubber plug t 8 8 I 816 I 1671188001 Needle bar bushing upper I 817 H6734B8001 Needle bar busing lower I 818 HA300C2070 Thread guide I 819 HA705G0066 Needle bar I B20 IIJ IOOC2 I70 Scrrn 1 8 44 4 5 I SM1 8 44 x4 5 B21 HAIOOC2150 Thread guide I 822 IIAIOOC2I60 Needle DBx 2 14 I B23 HAIOOC2060 Screw9 32 28 x13 I SM9 32 28 x13 B24 IIA307C0662 Set screw l 4 40 x5 2 SM l 4 40 ...

Page 22: ...C FEEDING AND FEED LIFTING ROTATING HOOK SHAFT MECHANISM 55 f 56 7 0 58 I I 59 29 11 38 19 26 I I I I I I I i 49 50 51 52 29 ...

Page 23: ...ccentric cam I 18 fl302l l C206 Needle bearing I CI 1167061 800I Belt pulley lmver I C20 116719C8001 Socket set screw M6x8 2 M6x8 C21 l13208H066l Ball bearing I C22 H6714B800 Bushing I C23 HA73IIC306 Screw 3 l6 28 x13 3 SM3 l6 28 x13 C24 H3021IC406 Thrust collar I C25 1167061 800I Level recd connecting rod I C26 II 706CI181 Link stud I _ 116724E800l Link 2 28 116709E8001 Link 2 l 29 I A73l lC806 S...

Page 24: ...C FEEDING AND FEED LIFTING ROTATING HOOK SHAFT MECHANISM 1 _ 41 I 45 ti 35 g 34 36 l l I I I I J I 37 I 64 t 4 47 48 21 53 11 38 lI II 26 iI I I I I i 49 50 51 52 29 ...

Page 25: ...SMIl 64 40 x5 C51 H6707E8001 Feed rock shaft crank right I 52 H674888001 Oil seal I C53 H6714E8001 Feed rock shaft I C54 H007009150 Retaining ring C type 15 I C55 HAI0500662 Set screw I 4 40 x4 2 SM1 4 40 x4 56 HAl08G0661 Thrust collar I C57 1 1671788001 Bushing for feed rock shaft leti 1 C58 I IA104G0012 Screw 3 l6 28 x12 I SM3 l6 28 x12 59 H6715E8001 Feed rock shaft crank left I C60 H6717E8001 S...

Page 26: ...D STITCH REGULATOR MECHANISM 26 50 r 49 34 35 30 3 l 3 9 G 25 20 21 I 23 22 I 24 Q 2 8 vW 42 40 P 43 41 46 44 43 48 O 45 44 47 __________________________c___ 23 ...

Page 27: ...Screw 15 64 28 7 I SMIS 64 28 7 1 2 I Ii 113Fll684 Screw 15 64 28 8 5 I SM15 64 28 85 1 22 1140361 800I Lever I 1 23 l ll32258 i08I Reverse lever I D24 1149391 800I Spring I 1 25 IIB2260C 08 l Reverse lever shati I D2Ci I1132262C 08I Rc ersc crank I 1 27 1132001 2020 Screw 15 64 28 12 I SM15 64 28 12 1 28 I14 371 8001 Scre11 I5 64 28 x6 I SM l5 64 28 x6 1 29 I14 381 800I Ruhber ring C l6 I 1 3 116...

Page 28: ...D STITCH REGULATOR 1 1 ECHANISM 26 50 r 49 34 35 30 3 39 J 37 33 D 38 l 42 40 43 41 46 44 43 C l 48 O 45 44 47 25 29 28 h w 25 24 ...

Page 29: ...44 H3230K075 I Set screw I l 64 40 x10 2 SM 1 64 40 10 045 H6708E8001 Stitch length adjusting crank I 046 HA731 IC006 Screw 9 64 40 x8 5 2 SM9 64 40 x8 5 047 HA7311CE06 Link stud I 048 H6723E8001 Spring I 1 49 H6707G800 I Eccentric shaft I 1 50 H6713G8001 Coil spring I 26 ...

Page 30: ...E PRESSER FOOT MECHANISM 41 40 39 38 29 6 22 k 3 26 27 28 27 10 8 14 15 ...

Page 31: ... Stud bolt I E18 116729 18001 Spring I El9 H007013060 E type stop ring 6 2 E20 H6713 17101 Tendion release lever assy I 21 H007013040 E type stop ring4 I E22 H671 l 18001 Pullup plate I IC 23 116732 1800I Tension rekase pin spring I I 24 11007013030 L typc stop ring 3 I 1 25 116727 18001 Tension release pin I l 26 116725 18001 Tension releaser I r 27 116730 18001 Spring I 1 28 116726 18001 Stud sc...

Page 32: ...F KNIFE ACTUATING MECHANISM 51 50 29 29 5 5 15 o 5 14 4 17 7 7 1 31 ...

Page 33: ...116735K8001 Set screw I5 64 28 x16 I SMl5 64 28 x16 F21 H67llK8001 Bracket I F22 H6736K8001 Screw 15 64 28 x13 2 SMI5 64 28 x13 F __ HA706N0664 Rubberwasher I l 24 IIA722lN206 Roller stu d 2 1 25 ll 7221NI06 Roller 2 1 26 11 72IINI06 Cam follower crank I l F27 HA706N0663 Nut 3 16 28 2 SM3 16 28 F28 HA721IN206 Camfol lower crank 2 I F29 116737K8001 Spring I F30 HA700N0050 Bushing I F 11 Il 17IOK800...

Page 34: ...F KNIFE ACTUATING MECHANISM 50 29 31 5 5 15 o 5 0 14 13 0 17 4 7 7 Jr 19 18 20 ...

Page 35: ...9 64 40 x8 5 F49 HA7121N704 N ut 9 64 40 1 SM9 64 40 F50 HA7311CC06 Screw9 64 40 x6 5 2 SM9 64 40 x6 5 F51 HA712N0696 Spring support collar 1 F52 HA712N0697 Trimminglever spring 1 F53 H6722K8001 Stud screw l5 64 28 x7 5 I SMl5 64 28 x7 5 F54 HA712N6912 Screw 1 8 44 x7 2 SMl 8 44 x7 F55 HA712N691l Flexible wire presser I F56 HA712N0699 Set screw lI 64 40 x5 I SMIl 64 40 x5 F57 HA712N6910 Flexible w...

Page 36: ...G TOUCH BACK MECHANIS1 1 DETECTOR MECHANISM 1 33 ...

Page 37: ...Spacer 2 G 5 HA700ROOIO Speed command disc B12 down I I6 HA700R0020 Speed command disc 821 up I Ci17 HA700R0040 Spacer I i18 HA700R0050 Supporkr spring I JI9 11 700R0060 Wash r 30 I G20 l1007009300 Retaining ring C type 30 I i2l i 1 3 2030 Scre1v l l 64 40 x8 I SMI 1 64 40 8 i22 ll 703R0067 Washer I _ IIA70JR0065 Dekctor bracket ass I i24 11 70406510 Screw M2x8 2 M2x8 i25 IIA70400655 Micrn switch ...

Page 38: ...H WIPER MECHANISM 35 ...

Page 39: ...001 Retain washer I 1113 ll6712M8001 Joint I I114 116714M8001 Pin I II15 H007013040 E type stopring 4 2 1116 116709M8001 rubhcrcushion I 1117 116715M8001 Stud sere I 1118 H 7101 0673 Nut 9 64 40 2 SM9 64 Hl 1119 116716M8001 Wiper driving kver I 1120 1167201 v18001 Thrc 1d 11 ipcr connecting rod I 1121 ll67l Jl vl8001 Stud screw 1 1122 ll 717M8001 Spacer 1 1123 Il 718M8001 Spring 1 1124 ll 7111N304...

Page 40: ...I OIL LUBRICATION MECHANISM 17 v 13 14 t 15 37 ef 16 17 I 5 29 28 33 1 i 37 24 19 4 20 t 1 21 ...

Page 41: ...001 Spring I 115 l 16704P8001 Screw5 16 24 x12 I SM5 16 24 12 116 HA705C0662 0 ring I 117 1 16705P8001 Oil adjusting screw I 118 l 16725P8001 0 ring I 119 l 16719P7101 Floater I 120 H6733K8001 Washer 2 121 1167181 8001 Floater case I 122 H6714P8001 Pipe holder 4 H6714P8002 Pipe holder 3 124 H6717P8002 Oil pipe I 125 l 167171 8001 Oil pipe I 126 1167231 800I Pipe holder I 127 1167161 8005 Oil pipe ...

Page 42: ...J ACCESSORIES 12 I I I 38 ___ 39 ...

Page 43: ... cover complete I 118 IIA300B2 l70 Screw l l 64 40 x8 2 2 SMI 1 64 40 8 2 119 I13705 710I Belt cover complete I J 2 fIA3UOB2I60 Screw l l 64 40 xIO 2 SMI1 64 40 IO 121 IL IOU 12180 Cover I 122 Jl 300 12070 Screw driver large I 123 lli 300 12180 Screw5116 28 16 2 SM5 16 28 16 124 IIi I 06 J0663 Knee lilii r coupling_joint I 125 11i I06 0662 Km e Iilier shali I 126 11i I06 l0667 Bolt 15 64 28 8 I SM...

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Page 48: ...SHANGHAI HUIGONG N0 3 SEWING MACHINE FACTORY The description covered in this manual is subject to change for improvement of the commodity without notice 2004 2 Printed ...

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