JUKI HZL-UX8 Series - Machine Adjustment Procedures; Adjusting the needle bar height

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[6] Adjustment
6-1 Adjusting the needle bar height
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Remove the face cover.
Adjustmentvalue:
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Distancefromthebottomendofthepininsideneedlebarsurfacetothetopsurfaceofthethroatplate:
19 mm
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Whentheneedleismounted,theneedleeyetiltsrightwardby2degrees.
Adjustmentprocedure1.
 1.Selectthestraightstitchusingthepatternselectingbutton.Choosecenterneedleposition.
 2.MakeagaugeneedlebycuttingahouseholdneedleHA×1todimensionA.Fitthegaugeneedleintothe
needlebar.
3. Prepare an appropriate metal plate of thickness B. (A = 19 mm - B)
 4.Bringtheneedlebartoitslowestdeadpoint.Slightlyloosenneedlebarconnectingstudsetscrew
❶
as
longastheneedledoesnotslipo󰀨fromtheconnectingstud.
 5.Placethemetalplateonthethroatplate.Movetheneedlebarupanddownbyhandtoadjustsothatthe
cutsurfaceofthegaugeneedlealignswiththetopsurfaceofthemetalplate.Then,turntheneedlebarby
twodegreesofanangleasillustratedinthesketchbelow.
 6.Temporarilytightenneedlebarconnectingstudsetscrew
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andreconrmthattheneedlebariscorrectly
adjusted.Then,securelytightenthesetscrew.
Adjustmentprocedure2.
 1.AssembleahouseholdHA×1needle#14intotheneedlebar,bringtheneedlebartoitshighestdead
point.Movetheneedlebarinthesamewayasdescribedinprocedure1toadjusttheneedlebarheightso
that the needle tip is spaced 15.5 mm from the top surface of the throat plate.
19 mm
Metal plate
Throat plate
2°
[Lowest dead point]
A
B
Gauge needle
15.5 mm
[Highest dead point]
HA×1 #14
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