JUKI LK-1900B series - Page 51

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Adjustment procedures Results of Improper adjustment
1. Select the check program 02.
 Referto"6.-(3)X/Ymotororiginadjustment".
2.Adjusttheorigintobethedimensionsthatweredescribedin"3.-
(21)Positionofthemechanicalorigin"bytheoperationpanel.
Adjustment procedures Results of Improper adjustment
1. Loosen the screw
❶
toadjusttheclearancebetweenthewiper
❷
and the needle so that this clearance attains 1.5 mm or more.
2. Loosen screw
❶
andadjustthedistanceAbetweenthewiper
❷
end plane and the needle center until this distance attains the
valuesspeciedbelow.
 Afteradjustments,tightenthescrew
❶
rmly.
Distance A between the needle center and the wiper
❷
end plane
(A mm)
 ·OtherthanLK-1903B,1903BN :23to25mm
 ·LK-1903B,1903BNonly :15to17mm
*Theneedlestaysinthepositionoftheendofsewingandstop.
o
If Distance A is too small, the
workclampfootmaytreadon
the needle thread when the work
clamp foot is lowered. At that
time,theneedlethreadmaybe
caughtbythewiper
❷
and the
needlemaybebroken.
In particular, this must be taken
into consideration when a thin
needle (#11 or less) is used.