JUKI LS-1340, Manual

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Adjustment Procedures Results of Improper Adjustment
Adjustment Procedures Results of Improper Adjustment
1. Set the stitch dial to “0 mm”.
2. Turn the handwheel to bring the needle bar to the lowest dead
point of its stroke.
3. Loosen clamping screw
1
in the needle bar rocking rear arm.
4. Provide a clearance of dimension A between presser bar
2
and walking bar
3
, and securely tighten the clamping screw.
At this time, adjust the clearance to dimension A at the position
where the distance from the top surface of the throat plate to
the presser foot is 60 mm in the state that the presser foot is
raised.
(Caution) Tighten the screw so that the needle bar rocking
shaft has no thrust play.
™ The throat plate comes in
contact with the feed dog and
contacting noise occurs and the
throat plate or the feed dog may
be damaged.
™ Irregular stitches may result.
™ S t i t c h s k i p p i n g o r n e e d l e
breakage will result.
™
Poorly tensed stitches will result.
1. Set the stitch dial to “0 mm”.
2. Turn the handwheel to bring the needle bar to the lowest dead
point of its stroke.
3. Loosen clamping screw
3
in the feed rocker.
4. Move the feed base and adjust so that needle
1
enters in the
center of the needle hole in feed dog
2
. Then securely tighten
the clamping screw in the feed rocker.
(a = a’)
Checking method
1. Set the stitch dial to the maximum.
2. Turn the handwheel and ckeck that clearance A in terms of the
groove of the throat plate is 1.5 mm when feed dog
2
travels
fully to the front.
In addition, make sure that feed dog
2
does not come in contact
with the throat plate at the position where the feed dog travels
fully to the rear.
(Standard)
When the feed amount is maximum, A = approximately 1.5
mm.