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Global NF 331 Instruction & Parts Manual
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Global NF 331 Instruction & Parts Manual

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GLOBAL
NF 331 (-LH)
NF 331 (-LH)-AUT
Instruction & Parts Manual
www .globalsew .corn
i nfo@globa I sew .corn

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Summary of Contents for Global NF 331

  • Page 1 GLOBAL NF 331 (-LH) NF 331 (-LH)-AUT Instruction & Parts Manual www .globalsew .corn i nfo@globa I sew .corn...
  • Page 2 CONTENTS L JJ.»IRJECAU'fllON§ BlEIFORE §TARTING OPERA. T ION ............;.2 2. MAIN §IP'lECIJF l! CA' f lIONS ....................2 3. lN§TAlLLING TIH[E BEJLT ..................... 3 4. A][])JU§TMENT OF NEE][J)LJE lBAR STOP JPO§ITION ............3 5. LUBRICATION ......... , ..............4 6.
  • Page 3 1. PRECAUTION§ BEFORE STARTING OPERATION 1) Safety Precautions: (1) When turning the power on keep your hands and fi n gers away from the area around/under the needle and the area around the balance wheel. (2) Power must be turned off when the machine is not in use, or when the operator leaves the seat. (3) Power must be turned off when tilting the machine head, installing or removing the "V"...
  • Page 4 3. HNSTALJLJ[NG TJHE BEJLT (Fig.1) 1) Use a V-belt for sewing machine use, type M 2) To adjust the belt tension, change the motor height by turning the tension adjust nuts so that the belt sinks about 15 mm when depressed by hand at the center of the belt span.
  • Page 5 5. L\UBRIC'A.TION (F i g.4) Pour oil up to position A of the oil tank. I) I During operation, check the oil level periodically, B ==i and in cases where • the oil level is below position B replenish the oil supply up to position A. Use white spindle oil.
  • Page 6 I) Cleaning feed dog Remove the throat plate and clear off the dust and lint between feed dog tooth slots. 2) Cleaning rotating hook Swing out the machine head and clean the hook. Wipe the bobbin case with soft cloth. 3) Cleaning oil pwnp, screen Swing out the machine head and clear off the dust and dirt on oil pump screen.
  • Page 7 socket. Then tighten needle clamp screw (A). Note: Fig (b): insufficient insertion. Fig. (c): v.TOng direction oflong groove. 12. THRJEAJ[MNG (lFig.U) To thread the needle thread, raise needle bar to the upper end of its stroke, lead the thread from spool and perform threading as shown in Fig.3.
  • Page 8 TRlIMMJER MECHANISM 15. IUIP'PER THREAD TENSION (lFig.14) 1) The upper thread can be adjusted based on the lower thread tension. 2) Adjustment can be done by rotating the thread tension nut. 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. Thread tension spring Tight Thread tension nut...
  • Page 9 Operation stroke of the thread trinnner solenoid (1) Standard operation stroke is 6.0 mm . (2) This stroke can be adjusted by using nut A Thread trimmer ,.-----·----·- --·--------·--·--- --·--·-·-, Tw,st spring solenoid j Thre(id rr1mrner solenoid � � Collar Thread trimme Threarl guide �ixed blade - -...
  • Page 10 A.ARM BlED AND IT'S ACCESSORIES • � ---903--...
  • Page 11 Remarks A.ARM JBE]O) AND HT'§ ACCESSORIES ::r: ('f) ::r: Fig. <t; .-< ,.r, Part No. Description .-< .-< ·u ,.r, ,.r, .-< .-< .-< ,.r, ,.r, (.'J (.'J (.'J (.'J (.'J (.'J Rubber plug HA307B0674 Rubber plug HA307B0673 Rubber plug HA300B2090 ·5 Screw...
  • Page 12 - 11 - A.ARM BED AND HT'S ACCESSORHIES ::r: (") ::r: <t'. Fig..Part No. Description Remarks HA115B0709 Thread tension releasing pin HA310B0705 Thread tension disc HA3l0B0702 Thread tension releasing disc HA115B0703 Thread tension spring H3013B0701 Thread tension spring HA505B0671 Thread tension spring HA115B7010...
  • Page 13 18.UlP' SlHIAJFT MEClHIANilSM 5 9101 2111315161819 2021 2322 27 25 27 2./ i <@ � �� � � - 12 -...
  • Page 14 B. UP SlHIAJF1' MECJHIANISM ::c: O'.l ::c: -< O'.l Fig. Description Remarks Part No. HA705G0066 Needle bar H3000C2010 Thread guide Set screw HAIOOC2170 SMl/8(44) X4. 5 Needle HA100C2160 Needle Hl000C2010 Needle HA500C2040 Screw HA104C0656 HA104C0072 Needle bar 1 ink assy HA304C0653 Needle bar link...
  • Page 15 CJFEJEDilNG NlEJEDJLE MlEClHIANilSM ::r: ::r: Fig. <1; Part No. Description Remarks l/") l/") 1./") l/") l/") HA304G0656 SM3/ 16 (28) X 15 Sct'-e\v Lever H3012D0691 HAI00B2110 Set screw SMll/64(40) X5. 5 Link H3012D0693 !-13012D0692 Set pin Needle bar supporior assy. 1-13013D5011 Needle bar supporior assy.
  • Page 16 � ::,::, � 11 12 � � � > "'j:_j � - --;; � •W � t � � � ;; � -· - - � 4 9 t_xj � / � > ..--.J �. � T � • "I T rrt [�'- \j ---...
  • Page 17 - 18 - ]D),RO'f A 'fHNG JHIOOK SHAIBT MECJHIANKSM <r; Fig. Part No. Description Remarks HAl04G0656 Washer H3006E2011 Feed assy. HA705J0031 Feed bar assy. HAI04G0654 SMl/8 (44) X 6 Screw l-13000E2040 Feed dog 1-17704E8001 Feed dog HA705J0654 Shaft for feed bar(echentric) HA104GOOI I Feed rock shaft...
  • Page 18 Part No. Remarks D.JLOWJER SHAFT MECJHlANilSM. r�, ::r: ::r:: Fig. <l; Description HA305E0066 Collar for rotating hook shaft HA305E0662 Set screw SM15/64(28) X4. 5 HA311E0671 Hook shaft bushing(right) HA110E0672 Oil pip� for hook shaft bushing HA300E2100 Plunger HA300E2110 Plunger spring D3fi HJ\300E2040 Guide plate HA104F0654...
  • Page 19 - 20 - E.STITCIHI LENGTH REGULATOR MECHANISM 34 36 38 39 40 41 42 32 15 1817 16 30 23 29 28 27 25 23...
  • Page 20 E.SlTfCJHI LENGTH REGULATOR MECHANISM ::r:: ..<C Fig. Pait No. Description If') Remarks If') If') •n � If') Connecting rod stud Hl204E0652 Connecting rod stud H3000F2070 Feed rock regulator conneting rod HA7311C406 H3000F2010 Feed rock regulator c01meting rod Hl204E0651 Feed regulator H3005F0651 Feed regulator H7705F8001...
  • Page 21 Remarks JE.§THTCJHI LENGTH REGULATOR MECHANISM ::r:: --< Fig..Part No. Description ..-< l(") l(") l(") HA100F2140 Spring holder HA700F2030 Stopper pin HA720F0681 Screw bar HA720F0683 Stopper pin releasing lever HA7421Fl20 Dial HA720F0684 Stitch length indicating plate HD520F8001 Stitch length indicating plate HA720F0685 Bushing HA720F0686...
  • Page 22 lF.l?RESSJER FOOT MJE<CIHIANli§M i t . . . 9 22 8 - 23 -...
  • Page 23 F.PRESSER FOOT MECHANISM ::r: i:-0 ::r: ..� i:-0 ..Fig..Part No. Description \£) Remarks \£) \£) <n \£) \£) HA107H0663 Knee lifter rod SM3/16 (28) X3. 5 HA107H0662 Hinged screw SM15/64 (28) X 13. 5 HAIOOH2050 Stud bolt HA306H0067 Knee lifter lever (right)
  • Page 24 G.KNIFJE ACTUA 'fliNG MECHANISM 59 63 - 25 -...
  • Page 25 G.KNKFE ACTUATING MECHANISM :::c !") :::c <t: Fig. Part No. Description Remarks Link stud HA712N0692 Retaining ring-E type H007013040 HA712N0698 Thread trimmer driving lever Stud screw HA712N0695 Set screw HA113F0684 SM15/64 (28) X8. 5 Flexible wire holder HA712N6910 Stud screw HA712N0699 SMll/64 ( 40) X 4 Flexible wire presser...
  • Page 26 Remarks G.KNHJFE ACTUATING MECHANISM ::r: (") -< ::r: ..Fig....<n Part No. Description ..... If') <n <n <n HA7311CH06 Screw SM9/64 ( 40) X 8 HA7121Nl04 Bracket for fixed blade H3000H2030 Fixed blade H22121HI04 Fixed blade HA7121N304 Screw SM9/64 (40)
  • Page 27 - 28 - JHI. WIPJER MECHANISM...
  • Page 28 If-Il. Willf»lEJPL MIECIHIANR§M �· , ..� ll"l ::r: <C Fig. Part No. Description Remarks .-< Solenoid cover for wiper rnech. H3000I2040 Screw HA708P0669 ead wiper solenoid assy. HA7221Pl08 Connecting HA708P6610 Vinyl cap-tire cable assy. HA708Pl011 Washer 1-106 HA700P0010 Solenoid bracket HA708P0667 Thread wiper switch HA708P0665...
  • Page 29 - 30 -- tTOUCH BACK MECHANISM - � -,1�� ��·�· � \--43 /,---44...
  • Page 30 li.1'0UCIHI RACK MECJHANJISM ::r: ::r: P'.l Fig. <1; ..., Part No. Description Remarks , ..-< Screw assy. HA300B2170 SMll/64 (40) X9 HA700Q0030 Cord holder H2206l0673 Atm side cover solenooid assy. Connector cap HA712Q0693 Nylon cormector HA700Q0010 Gascket for solenoid oil seal H2206I0672 Atm side cover HA108B068!
  • Page 31 I.TOUC]H[ BACK MECHANlISM (""} ::r:: ::r:: ..<t; Fig. Part No. Description Remarks c.:, c.:, c.:, HA703R0066 Detector bracket supporter HA703R0067 Washer HA700ROOOO Pulley assy. HA703R0065 Detector bracket ass y . - 32 -...
  • Page 32 ,J.OHIL ILUJBJIUCATION MlEClHANISM ,i----5 fj,._,.,_,.., � 20 ---- � <c::::: = � � �:: 19 -------- = ==r: ;pi= 1012 1011 - 33 -...
  • Page 33 J.Ol!L LUBRICATION MJECJHANISM ::r: ::r: ..Fig. <!; ,.., ..Part No. Description Remarks I/") ..I/") I/") I/") I/") Screw HAI00H2150 SM9/64 (40) Xii H3004L0065 Oil wick fitting plate assy. Oil filter holder H3000L0020 Oil return tube assy. H3006L0065 Upper shaft oil tube assy.
  • Page 35 K,ACCJESSORIES ::r: P'.:1 ::r: P'.:1 Fig. <l; Pa1i No. Description Remarks •n Magnet block HAIO0J2120 Hexagon socket screw key 3 HA704S0fi53 Hexagon socket screw key 2 HA300J2230 Washer Wood screw !- 1 801045200 HA300J2200 Screw driver (Size M) HA300J2210 Screw driver (Size S) HA704S0(i54 Speed command disc adjusting plate...
  • Page 36 K.ACCIESSOJ!UlES -· <C Fig..Part No. Description Remarks <r) •n <r) <r) HA300J2310 Needle 1<44 HIOOOC2010 Needle HA500C2040 Needle 1<44 1<45 HA700E2060 Bobbin HAIOOE2170 Bobbin I-12604D8001 Bobbin Hll00E2010 Bobbin 1(46 HA300B2170 Screw SMll/64(40) X8 1<47 HA300J2230 Washer l-1801045200 Wood screw - 37-...

This manual is also suitable for:

Nf 331-lhNf 331-aut nf 331-lh-aut