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Summary of Contents for 303 D

Page 1: ...GLGBAL 303 D OP ERATION MANUAL 1 A ...

Page 2: ...hat you wear safety glasses 7 For the following turn off the power switch of disconnect the power plug of the machine from the receptacle 7 1 For threading needle s and replacing bobbin 7 2 For replacing part s of needle presser foot throat plate feed dog cloth guide etc 7 3 For repair work 7 4 When leaving the working place of when the working place is unattended 8 If you should allow oil grease ...

Page 3: ...plug has to be connected to a grounded receptacle 16 The machine is only allowed to be used for the purpose intended Other usedare not allowed 17 Remodel or modify the machine in accordance with the safety rules standards while taking all the effective safety measures We assumes no responsibility for damage caused by remodeling or modification of the machine 18 Warning hints are marked with the tw...

Page 4: ...n To prevent possible injury to hands be sure to keep your hands away from the vicinity of the hook during operation In addition be sure to tum OFF the power to the J machine when replacing the bobbin 6 To avoid possible personal injuries be careful not to allow your fingers in the machine when tiling raising the machine head 7 To avoid possible accidents because of abrupt start of the machine tur...

Page 5: ...TING THE STITCH LENGTH 9 8 11 IREAD THENSION 10 9 11 iREADTAKE UP SPRING 10 1O HAND LIFTER 11 11 PRESSER FOOT PRESSURE 11 12 ADJUSTINGTHE FEEDTIMING 11 13 HEIGHT OF THE FEED DOG 12 14 NEEDLE TO HOOKRELATIONSHIP 12 15 ADJUSTING THE HEIGHT OF THE PRESSER FOTI 13 16 ADJUSTINGTHE THREAD TAKE UP STROKE 13 17 INSTALLING THE BELT COVER AND THE BOBBIN WINDER 13 18 ADJUSTING THE HEIGHT OF THE KNEE LIFTER _...

Page 6: ... rotation of the motor pulley is correct Operate yuor machine at the normal sewing speed or less for the first month after the set up I 1 INSTALLATION Rg 1 3 B Ag 2 1 lnstalling the oil pan 1 The oil pan should rest on the four corners of the machine table groove 2 Two rubber s ts for supporting the head portion on the operator side A are fixed on the extended portion of the table by hitting the n...

Page 7: ...achine at 2 000s p m to 2 500 s p m for about 1o minutes for the purpose of break in WARNING A Tum OFF the power before starting the work so as to prevent accidents caused b abru t start to the sewin machine 2 Adjusting the amount of oil supplied to the face plate parts 1 Adjust the amount of oil supplied to the thread take up and needle bar crank by turning adjust pin 2 The minimum amount of oil ...

Page 8: ...pprol 2mm Appropriate amount otol llmll IApprox smm Rg 8 Apprqlriaat llftlllft al lqe e Adjusting the amount of oil oil splashes in the hook Fig 9 7 1 The amount ofoil shown is the samples on the leftshould befinely adjusted in accordance with sewing processec Be care ful not to excessivelyinaease decrease 1heamount ofoal in thehook lf the amount of on Is too small the hook will be seized the hook...

Page 9: ...w and hold needle Dw its indented part Afacing exactly to the right in direction B 3 Insert the needle fuRy into the hole in the needle bar in the dirction of the arrow until the end of hole is reached 4 Securely tighten screw 5 Check that long groove C of the needle is facing exactly to the left in direction D I 5 SETTING THE BOBBIN INTO THE BOBBIN CASE Fig 11 Fig 11 8 1 Install the bobbin in the...

Page 10: ...ows Fig 12 1 3 7 ADJUSTING THE STITCH LENGTH Fig 13 Flg 13 1 Tum stitch length dial in the direction of the arrow and align the desiredrunberto marker dot A on the machine arm 2 The dial calibration is in mUlimeters 3 Whenyouwanttodec reaSe the stitch length tum stitch fenglh dial D while pressing feed lever Q in the direction of the arrow 9 ...

Page 11: ...he sewing material is thin material short needle width pis lighten the take up spring tension and wide the sway of it Otherwise pis do to opposition 2 Changing the srtoke of thread take up spring 1 Loosen setscrew 2 As you tum tension post clockwise in sirection A the stroke of the thread take up spring will be increased 3 As you turn the knob counterclovkwise in direction 8 the stroke wifl be dec...

Page 12: ...g regulator counterclock wise in direction B the pressure will be decreased 3 After adjustment tighten nut 4 For general fabrics the standard height of the presserspring regulator is 33 to 36mm 5 kg WARNING Tum OFF the power before starting the work so as to prevent accidents caused start to the se machine 1 Loosen screws and in feed eccentric cam CD move the feed eccentric cam in the direction of...

Page 13: ...te while sew thin material the suitable height is 0 7 0 Smm the bottom end of needle bar lower bushing 3 then tighten set screw 1 b While using DA needle aligh mark fine Cwith the bottom end of needle bar lower bushing 3 then tighten set screw 1 3 1ocate the hook postion a while using DB needle loosen the two hook setscrew tum the hand wheel and aligh market line 8 on ascending needle bar 2 with t...

Page 14: ...g light weight materials move thread guide D to the right in direction B to des ease the length of thread pulled out by the thread take up 3 Normally thread guide is positioned in a way that marker line C is aligned with t e center of the screw I 17 INSTALLINGTHE BELT COVER ANDTHE BOBBIN PER Fig 23 24 25 I 13 1 lnstallation procedure 1 Drill four guiding holes A B C and D for wooden screws in the ...

Page 15: ...ing wooden screws and washers Warnings 1 For safty s needs belt cover should be installed 2 The left and right parts of the bobbin winder should be paraJI to the plate belt holes I 18 ADJUSTING THE HEIGHT OFTHE KNEE LIFTER Fig 26 27 Fig 26 14 WARNING Tum OFF the power before starling the work so as to prevent accidents caUsed b start of the sewi machine 1 The standard height of the presser foot li...

Page 16: ...le sew light material the machine need to change the rpesser foot needle bar and material feed and do some adjustment 2 the presser foot with the A add to the number is presser rotlar To order or for further information please contact Please do not hesitate to contact our stributors of agents in your area for furtner ricrmation when necessary The description covered in this instruction manual is s...

Page 17: ...GLGBAL 303 D PARTS BOOK r V ...

Page 18: ...Face plate bed Face pate screw Face plate adjusting screw stopple Needle staff crank screw stopple Screw stopple of thread stitch bar pin Stopple for feeding adjusting device Bottom shaft blind stopple Safety indicating plate Thread running components Thread running pole Thread running holding plate Thread running holding spring Thread running holding screw Cover of thread stitch bar Cover screw o...

Page 19: ...22 16 i 17 i 18 I 19 I Jo 0 23 V 24 28 27 t tj r 29 I I I I 130 5l I 151 I I 32 I L I _______J 2 5 13 ...

Page 20: ... shaft Mid sleeve screw for upper shaft Front sleeve for upper sleeve Crank oil control felt Crank oil adjusting pin Crank oil adjusting pin sleeve o ring of crank oil adjusting pin Needle bar crank Setting scr w for needle bar crank 1 4X 4 0L 6 0 0 ring of setting screw Fastening screw of needl bar crank 9 32 X 28L 16 Protective plate of needle bar crank Components of thread stitch crank Setting ...

Page 21: ...23 4 ...

Page 22: ...eeve of needle bar Upper sleeve of stopple of needle bar Bottom sleeve of needle bar Bottom sleeve thread hook of needle bar Needle bar Thread hook of needle bar By needle screw 1 8 X 44L 4 5 Needle DB X 1 14 Three ere thread hook Screw of three eye thread hook 3 16 X 28L 6 Adjusting seat of thread stitch spring Thread stitch spring Thread holding screw Fastening screw of thread holding screw 9 64...

Page 23: ...I 19 I 26 28 20 24 25 13 6 ...

Page 24: ...ssor foot 1 15 GR620i2 8 Components of cam pressor foot spanner 1 16 GR621 8 o ring of pressor foot spanner 1 17 GR622 8 Up and down plate of pressor foot 1 18 GR623 3 8 Front bar components of lifting pressor foot 1 19 GS323 8 Screw pin of front bar 2 20 GR625 8 Open shield ring of screw pin 3 21 GR626 8 Special open shield ring of up and down plate connecting 1 22 GR627 8 Top plate of thread rel...

Page 25: ...i3 29 I 28 24 8 ...

Page 26: ...2 12 G0269 8 Front sleeve of bottom shaft 1 13 GS301 8 Front sleeve screw of bottom shaft 1 14 G0270 8 Back sleeve of bottom shaft 3 6X 28L 9 1 15 GS402 8 Back sleeve screw of bottom shaft 1 16 GR636 8 Shield ring of bottom shaft 1 17 GS331 8 Shield ring screw of bottom shaft 11 64X 40L 4 8 2 18 GC154 8 Bevel gear of bottom shaft small 1 19 GS319 8 Bevel gear screw of bottom shaft big 1 4X 4 0L 8 ...

Page 27: ...24 26 25 19 21 20 r l 9 18 19 16 7 8 2 12 10 13 11 10 ...

Page 28: ... of feeding bar pin 9 64 X 40L 6 Long swaying plate of feeding Short swaying plate of feeding Connecting pin of short swaying plate Screw of connecting pin 9 64 X 40L 6 Seat components of feed swaying plate Left pin of feed swaying plate Screw of the left pin 5 64 X 28L 7 Right pin of feed swaying plate Right pin screw 15 64 X 28L 7 Feeding crank Feeding crank pin Screw of crank pin 9 64X 40L 6 Fe...

Page 29: ...fting shaft 1 41 GH217 8 Back crank of dog lifting 1 42 GS334 8 Screw of dog lifting back crank 3 16 X 28L 12 l 43 GH218 8 Dog lifting bar 1 44 GS341 8 Shaft screw of dog lifting bar 1 45 GL169 8 Shaft nut of dog lifting bar 9 32X 28 1 46 GR650 8 Shaft shield ring of dog lifting bar 1 47 GR589 8 Shield ring of dog lifting shaft 1 48 GS305 8 Shielding ring screw of dog lifting shaft 1 4X 40L 6 2 49...

Page 30: ...30 3 29 37 17 40 13 ...

Page 31: ...ng of fceding distance Feed adjusting device Feed adjusting sleeve Shaft tip screw of feed adjusting device Bar pin of reverse feeding Bar pin screw Reverse feeding bar Shield ring of reverse feeding bar Reverse feeding shaft O ring of reverse feeding shaft Reverse feeding shaft sleeve Reverse feeding spanner Setting screw of reverse feeding spanner 1 4 X 40L l0 Reverse feeding spanner screw 1 4 X...

Page 32: ...11 10 l 12 13 21 24 26 I I 23 I 8 15 1 2 _ 16 ...

Page 33: ... Vane plate of oil pump Oil pump cover Oil pump co rer screw Oil supply drain of bottom shaft Back oil ram Ram pin Ram screw Oil pump screw Screw pole of oil pump connecting Screw of double screw bolt connecting ll 64X 40L 9 5 Joint of oil supply drain Upper shaft oil supply drain Spinning shuttle oil supply drain Oil adjusting screw of spinning shuttle Oil adjusting pin of spinning shuttle Pressi...

Page 34: ... i 31 32 I I 69 24 21 17 ...

Page 35: ...rew o ring of oil extracting hole screw Two way crank of lifting pressor fOQt Screw of two way crank Banting screw of two way crank 15 64X 28 L 30 Banking nut of two way crank 15 64X 28 Twisting spring of two way Lifting pressor foot sb ft Open shield ring of lifting pressor foot shaft Operating bar head of lifting pressor foot Operating bar head screw 9 32 X 20L 20 Oil plate magnet Oil plate bed ...

Page 36: ... 17 IS 18 16 20 19 ...

Page 37: ...of bobbin stand bar I 8 X 44L 125 Pin of bobbin stand Bobbin stand spring Brake bed of bobbin wheel Brake bed clip Locking screw of brake bed 11 64 40L 1 Jumping plate spring of full thread Jumping plate spring sere of fi11l thread Thread running seat Thread running screw Shield ring of thread running and holdin Thread running and holding plate Thread running and holding spring Thread running and ...

Page 38: ...late nail 2 39 GR720 8 Thread plate 2 40 GR721 8 Thread reel lock bed 2 41 GR722 8 Fastening nut washer of thread bar 2 42 GR723 8 Spring washer of fastening nut 1 43 GL173 8 Fastening nut of thread bar 2 44 GS401 8 Connecting head screw of connecting bar 2 45 GL174 8 Connecting nut of connecting bar 2 46 GR750 8 Soft cushion of thread plate 2 21 ...

Page 39: ...18 21 23 ri5 13 22 ...

Page 40: ... head oonnecting hook seat Seat nail of machine head connecting hoot Front cover of upper wheel Fixing bracket of front cover Back cover components of upper wheel Back cover of upper wheel Components of back cover Wood screw of back cover fixing Wood screw washer Fastening screw of upper cover Back cover pole Pole screw Screw washer Machine needle Screw driver L Screw driver M Screw driver S Shutt...

Page 41: ...4 6 16 __J_ 17 IS 8 I I t I I l 10 j I __ _______ f A 1 12 n I l fJ 19 21 20 _ f ___ c __ 1 _ 1 i 1 I I i I i Ji 1 r I I I I I I _ i f i I 24 22 ...

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