JUKI DDL-555-4 - Mechanical Adjustments; Feed Mechanism Timing

III. ADJUSTMENT
1. Feed mechanism
Set screw
n
\Feed drive
eccentric cam
w
Thrust collar \ II
Adjusting the feed timing:
(excepting DDL-555H-4):
To obtain the standard feed timing, align the
engraved line on the feed drive eccentric cam
with the dot mark on the thrust collar. By this
adjustment, puckering stitch will be eliminated
and stitches will have an ideal thread tension.
Loosen 2 setscrews on the feed drive eccentric
cam properly position the cam and firmly
tighten 2 setscrews.
Needle
mm
mm( Throat plate
Feed dog
If it is preferable to provide the feed mecha
nism with an earlier timing than the standard
timing in order to prevent the work from slip
ping
during stitching, move the feed drive
eccentric cam in the direction shown by the
arrow.
Needle
Throat plate
Feed dog
If it is necessary to delay the timing of feed
mechanism in
order to improve the thread ten
sion in stitches, move the feed drive eccentric
cam in the direction shown by the arrow. But,
do not move it too much, otherwise it may
become a cause of needle breakage.
Needle
Feed dog
Throat plate
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From the library of: Superior Sewing Machine & Supply LLC