JUKI HZL-F series Service Manual

COnTEnTS
[1]SpecicationsofHZL-FSeries.............................................................1
[2]Principalparts........................................................................................3
[3]Disassemblingthemachinecovers.....................................................4
[4]PCBconnectiondiagram......................................................................8
[5]Adjustment...........................................................................................10
5-1 Adjustingtheneedlebarheight......................................................................10
5-2 Adjustingtheneedleentrypoint.....................................................................11
5-3Feeddogheight................................................................................................11
5-4Timingbelt........................................................................................................12
5-5 Feedtiming.......................................................................................................12
5-6 Timingbetweentheneedleandthehook.......................................................13
5-7 Clearancebetweentheneedleandthebladepointofhook.........................14
5-8Positionofthehookrotationstopperplate....................................................15
5-9 Adjustingthebobbinthreadtension..............................................................15
5-10Adjustingthediskopeningamount..............................................................16
5-10-1Adjustingthetensionreleaseadjustingplate...................................16
5-10-2Pretensiondiskopeningamount.......................................................16
5-10-3Tensiondiskopeningamount............................................................17
5-10-4Basetensionopeningamount............................................................17
5-10-5Adjustingthediskopeningamountatthetimeofthreadtrimming.18
5-11 Adjustingtheneedlethreadtension.............................................................18
5-12 Verticalpositionoftheneedlethreadinghook............................................19
5-13Adjustingtheauxiliaryhookheight..............................................................20
5-14Adjustingtheopeningamountofauxiliaryhook.........................................21
5-15 Adjustingthepresserfootliftingswitch......................................................21
5-16 Adjustingthepresserbarheight..................................................................22
5-17 Motorbelt........................................................................................................22
5-18Automaticthreadtrimming...........................................................................23
5-19 Longitudinalfeed...........................................................................................24
5-20Servicemode.................................................................................................25
5-20-1Servicemodescreen..........
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.......................................................................25
5-20-2Service-modeitemsanddescriptions....
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...................................................25
Be sure to observe the following to protect against a re, electrical shock, injury or damaged
components.
* Be sure to unplug the machine before disassembly, assembly or adjustment of the machine.
* Be sure to carefully prevent electric cords from being caught, coated surfaces from being
damaged as well as wrong wiring during assembly.
* Be sure to use the proper genuine parts when changing any of the machine parts.
CauTIOn:

JUKI HZL-F series Specifications

General

Brand	JUKI
Model	HZL-F series
Category	Sewing Machine
Language	English