A180E153P02

INSTRUCTION MANUAL

SINGLE-NEEDLE LOCKSTITCH BASTING INDUSTRIAL SEWING MACHINE

LX5-871-M0MODEL

PRECAUTION BEFORE STARTING OPERATION1 Safety Precautions

1 . Whenturningthepoweron,keepyourhandsandfingersawayfromtheareaaround/undertheneedleandtheareaaroundthepulley.

2 . Thepowermustbeturnedoffwhenthemachineisnotused,orwhentheoperatorleaveshis/herseat.

3 . Thepowermustbeturnedoffbeforetiltingthemachinehead,installingorremovingthe“V”belt,adjustingthemachine,orreplacingparts.

4 . Avoidplacingfingers,hairs,obstacles,etc.nearthepulley,“V”belt,bobbinwinderwheel,ormotorwhenthemachineisinoperation.Injurycouldresult.

5 . Don’tputfingersintothethreadtake-uplevercover,around/undertheneedle,orpulleywhenthemachineisinoperation.

6 . Ifthebeltcover,thefingerguard,and/ortheeyeguardareinstalled,don’toperatethemachinewithoutthesesafetydevices.

2 Precaution before Starting Operation

1 . Ifthemachine’soilpanhasanoilsump,neveroperatethemachinewithoutfillingoilinit.

2 . Ifthemachineislubricatedbyadropoiler,neveroperatethemachinewithoutlubricating.

3 . Whenanewsewingmachineisoperated,verifytherotationaldirectionofthepulleywiththepoweron.

(Thepulleyshouldrotatecounterclockwisewhenviewedfromthepulley.)4 . Verifyvoltageand(singleorthree)phaseindicatedonthenameplateofthemotor.

3 Precaution for Operating Conditions

1 . Avoidusingthemachineatabnormallyhightemperature(35℃orhigher)orlowtemperature(5℃orlower).Otherwise,machinefailuremayresult.

2 . Avoidusingthemachineindustyconditions.3 . Avoidusingthemachineinconditionsfilledwithalotofelectricnoisessuchashigh-frequencywelders.

INTRODUCTION　ThankyouverymuchforpurchasingMitsubishiindustrialsewingmachine.　Pleasereadthisinstructionmanualbeforeoperatingthesewingmachine.Pleasereadalso“SafetyManual”,“InstructionmanualforMitsubishiLimiservoX”andoperatethesewingmachinecorrectlyandsafely.

CONTENTSPREPARATION FOR OPERATION ……………………………………………… 11Adjustmentoftheneedlestoppingposition……………………………………… 1

USAGE PRECAUTION ……………………………………………… 21Lubrication…………………………………………………………………………… 22Cleaningofmotor …………………………………………………………………… 23Installationofthebeltcover ……………………………………………………… 24Precautiononoperation …………………………………………………………… 2

HOW TO USE ……………………………………………… 31Installationoftheneedle…………………………………………………………… 32Windingofthebobbinthread……………………………………………………… 33Threadingoftheneedlethread…………………………………………………… 44Settingofthebobbin………………………………………………………………… 45Leadingoutthebobbinthread …………………………………………………… 46Adjustmentofthebobbinthreadtension………………………………………… 57Balanceofthreadstension ………………………………………………………… 58Adjustmentoftheneedlethreadtension………………………………………… 59Adjustmentofthethreadtensionreleasing……………………………………… 6<Adjustmentofthepresserfootpressure………………………………………… 7AAdjustmentofworkingheightofthepresserfoot……………………………… 7BRelationshipbetweentheneedlemotionandtherotatinghookmotion……… 7

SPECIFICATIONS ……………………………………………… 8

1 Adjustment of the needle stopping position

Theneedlestoppingpositionshouldbeadjustedwiththedetectorinstalledonthemachinehead,butthesewingmachineconnectordisconnectedfromthecontrolboxandthecoverofthedetectorremoved,asfollows.

1 . Adjustment of “UP” positionTurnthepulleyandstopitatthepositionwheretheneedlecomestothehighest.(Atthistime,thewhitemarkpointonthepulleymeetstheblackmarkpointonthearm.)Loosenthetwosetscrewsonthedetectorjoint.Turnthedetectorjointwhilefixingthepulley,andadjusttheUPpositiondetectordisc(black)totheprescribedstopposition.Tightenthetwosetscrewsonthedetectorjoint.

2 . Adjustment of “DOWN” positionTurnthepulleyandstopitatthepositionwheretheneedlecomestothelowest.Atthistime,checkthattheDOWNpositiondetectordisc(red)locatedintheprescribedstopposition.Ifnot,turnonlytheDOWNpositiondetectordisc(red),andadjustthestopposition.

Afteradjusting,reinstallthecoverofthedetector,andconnectthesewingmachineconnectorasbefore.

PREPARATION FOR OPERATION

DOWN position detector disc (red)

UP position detector disc (black)

Set screw

Stop screw

White mark point

Black mark point

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1 Lubrication●Pouroiluptothearrowpositionbeforestartingoperation.

…About5cc…5,6drops…1,2drops

Foroil,use“PulleySFoil”specifiedbyMitsubishi.※Refer PulleySFoil：Specificgravity(15℃ )=0.86(g/cm3) ：Viscosity(40℃ )=18.0(mm2/s)●Whenanewsewingmachineisusedforthefirsttime,orsewingmachineleftoutofuseforconsiderablylongtimeisusedagain,replenishasuitableamountofoiltotheportionsindicatedbyarrowsintherightfigure.

2 Cleaning of motorRemovedustfromthemotorfiltereveryoneortwomonths.(Continuedoperationwiththefiltercloggedwithlintordustmayoverheatthemotor.)

3 Installation of the belt cover1 . Installthebeltcoveronthemachinesideforsafety.Refertotheprovidedinstructiondocumentcontainedinthesamepackage.

2 . Installthebeltcoveronthemotorsideforsafety.

4 Precaution on operation( 1 ) Whenthepoweristurnedonoroff,keepfootawayfromthepedal.( 2 ) Itshouldbenotedthatthebrakemaynotworkwhenthepowerisinterruptedorpowerfailureoccursduringsewingmachineoperation.

( 3 ) Sincedustinthecontrolboxmightcausemalfunctionorcontroltroubles,besuretokeepthecontrolboxcovercloseduringoperation.

( 4 ) Donotapplyamultimetertothecontrolcircuitforchecking,otherwisevoltageofmultimetermightdamagesemiconductorcomponentsinthecircuit.

USAGE PRECAUTION

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2 Winding of the bobbin threadNote: When bobbin thread is wound, keep the presser foot lifted.

　Adjustment ●Tension of wound thread Slackwindingisrecommendedforpolyesterthreadandnylonthread.

●Conically wound thread Movethethreadguidetowardsmallerdiameterofwoundthreadlayer.

●Amount of wound thread Loosenthewindingamountadjustmentscrewtodecreasethreadwindingamountandtightenthescrewtoincreasethreadwindingamount.

1 Installation of the needleNote: Before installing the needles, be sure to turn off the power.

1 . Forneedle,use“Mt × 190”.2 Determinethicknessoftheneedleaccordingtothicknessofthethreadused.

Winding tension adjustment nut

Even winding amount of 80% of full capacity

Winding amount adjustment screw

Thread guide

Insufficient insertion Needle distorted

Gap

Long groove left side

Insert the needle upto the bottom of needle clamp and tighten the screw keeping the long groove side facing to the left

HOW TO USE

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3 Threading of the needle threadPasstheneedlethreadintheordershowninthebelowfigure.

5 Leading out the bobbin thread( 1 ) Putthebobbinandbobbincasetogetherintothehook,asshowninthebelowfigure.

( 2 ) Pickuptheendofneedlethreadbylefthand,andturnthepulleyonerotationbyrighthand.Whentheneedlethreadispulledup,thebobbinthreadwillbedrawnoutasshowninthebelowfigure.

4 Setting of the bobbin( 1 ) Putthebobbinintothebobbincaseinthedirectionthatthebobbininthebobbincaseturnsclockwise,viewedfromthebobbinside,whenthethreadispulled.

( 2 ) Passthethreadthroughslit①ofbobbincaseandpull.

Thethreadwillbeledoutfromtheguideeye②.Note:Thebobbinshouldturninthedirection

shownbyarrowinthefigurewhenthethreadispulled.

①

③

②

④

⑤

⑥

⑦

⑧

⑩

⑪

⑨

Guide eye ②

Threading slit ①

Needle threadBobbin thread

HOW TO USE

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8 Adjustment of the needle thread tensionTheneedlethreadtensioncanbeadjustedbychangingpressureofthetensiondisk,andforceandstrokeofthethreadtake-upspring.●Adjustment of the tension disk pressure1 . Inmostcases,threadtensioncanbeproperlyadjustedonlybychangingtightnessofthethreadtensionnutⒶ.

2 . Toincreasepressure,turnthenutclockwise.3 . Todecreasepressure,turnthenutcounterclockwise.

●Adjustment of the thread take-up spring forceApplyascrewdrivertothethreadtake-upspringstudandturnthestud.Thespringforceincreaseswhenthescrewdriveristurnedcounterclockwise,anddecreaseswhenturnedclockwise.Ifthestudistight,removethefaceplateandloosenthescrewoftensionregulatorslightly.●Adjustment of the thread take-up spring stroke1 . Loosenthesetscrewusedtosecurethethreadtensionregulatorslightly.

2 . Applyascrewdrivertothethreadtake-upspringstudandturnthescrewdrivercounterclockwisetoincreasethestroke.

3 . Turnthescrewdriverclockwisetodecreasethestroke.4 . Afteradjusting,besuretotightenthesetscrew. Thestandardstrokeofthreadtake-upspringisfrom6to8mm.

Ex.: ThreadusedCotton#120 FabricGeneralapparelandpad Needlethreadtension140-180g Bobbinthreadtension5-20g Threadtake-upspringforce15-20g Threadtake-upspringstroke6-8mm

6 Adjustment of the bobbin thread tension

7 Balance of threads tension

Tighten

Loosen

A ○

B ×

C ×

Balanced tension

Tight the needle thread tension or loose the bobbin thread tension

Loose the needle thread tension or tight the bobbin thread tension

Decrease

Increase

Increase

Decrease

Thread tension nut Ⓐ

Set screwIncrease

6 to 8 mm

Decrease

HOW TO USE

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9 Adjustment of the thread tension releasing1 . Adjustment of the thread tension regulator setting position. Thestandardgapisabout0.7mmwhenthetensionreleasecamsalienceisincontactwiththetensionreleasepin.

Toadjust,loosenscrewⒶandchangepositionofthethreadtensionregulatorproperly.

2 . Adjustment of the tension release timingNote: Thetensionreleasetiming largelyaffectsstitching operation. If the gap between thetensiondisks is toosmall, theneedle thread isnotdrawnproperly.Onthecontrary if thegapis too large, theneedlethreadmaybereleasedearlierandbecomeloose.

Thetensionreleasecamshouldbesetsothatthetensionreleasediskscometoopenatthetimewhentheredmarkpointonthepulleycomesinlinewiththeblackmarkpointonthearm.

Tension release pin

0.7 mm

Screw Ⓐ

Tension release cam

HOW TO USE

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< Adjustment of the presser foot pressure

1 Thepressureadjustingscrewisfactory-adjustedasshownintherightfigure.

2 . LoosenthepressureadjustingscrewlocknutandturnthepressureadjustingscrewⒶ.

3 . Turnthescrewclockwisetoincreasethepressure.

4 . Turnthescrewcounterclockwisetodecreasethepressure.

Note:DonotchangesettingofscrewⒷ.If thescrew is too looseor too tight, clappingnoisemayoccurduringoperation.

A Adjustment of working height of the presser foot

1 . Height of the presser footThestandardheightofthepresserfootatitslowestpositionis1.0mmmeasuredbetweenthepresserfootbottomsurfaceandthethroatplatetopsurface(seethedetailofpart“A”).Toadjusttheheightofthepresserfoot,loosenthesetscrewⒹusedtosecurethepresserbarguidebracketandverticallymovethepresserbar.

2 . Working height of the presser footLoosenscrewⒸandadjustpositionofpresserbarliftingbracketsothatthepresserfootstartsgoingupwhentheneedlepointreaches0.5to1.0mmabovethepresserfootbottomsurface.(Whenthisadjustmentismade,theheightofthepresserfootatstopofthemachineisabout13.5mmoverthethroatplate.)Note:Thedistancebetweenthepresserbar

guidebracketandthepresserbarliftingbracketisfactory-adjustedto6.5mm.

B Relationship between the needle motion and the rotating hook motion

Thestandardadjustmentisthetipofthehookislocatedincenteroftheneedlewhentheneedlebarlifted2.2mmfromthelowestposition.Thedistancebetweenthetipofthehookandthescarfoftheneedleis0.05mmorlower.

Ⓐ

Ⓑ

Ⓒ

Ⓓ

Loosen Tighten

24

30

1.0 mm

A

Throat plate top surface

Presser bar guide bracket

Presser bar lifting bracket

Detail of part “A”

Throat plate

0.5 to 1.0 mm

6.5 mm

Tip of the hook

0.05 mm or lower

0.05 mm

HOW TO USE

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LX5-871-M0 Specifications

ModelSpecifications

LX5-871-M0

Application Bastingforgeneralapparel

Bedtype Postbed

Max.sewingspeed(rpm) 650

Needlebarstroke(mm) 35

Threadtake-upleverstroke(mm) 61.3

Presserfootstroke(mm) 16

Presserfootheight(mm)(Topdeadpointofthreadtake-uplever)

13.5

Needle Mt×190#16

Hook Horizontalrotatinghook

Lubricationsystem Manuallubrication

Beddimensions(mm) 517×178

Note:●Don’toperatethemachineoverthemax.sewingspeed. ●Thebobbinshouldbeofhighqualityfreefromdeformation. ●Somematerials,and/orsewingconditionsmayrequirespecificationsotherthanthoselisted

above. ●Thesespecificationsaresubjecttochangeformachineimprovement.

SPECIFICATIONS

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Printed in Japan