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Adjustment Procedures
Results of Improper Adjustment
How to mount the presser main body
1. Get the minute-quantity presser adjusting pin
inserted in the presser
bar guide
and insert the presser bar
in the presser bar bush
and the hole of the presser bar guide
. Mount them at the same
time and leave the conditions as they are.
2. Insert the driving link
of the presser main body
in the driving
sleeve
. Insert the presser bar
in the driving link
hole and the
presser bar hole of the presser main body
. Since then, tighten the
setscrews
.
3. Lightly push the left side of the presser main body
until it comes in
contact with the presser guide right
. In this state, turn the hand
pulley in forward direction to confirm that claws of the fancy thread
carrier
are located in the center of the left needle and the left
middle needle.
(Caution) If claws of the fancy thread carrier
seem to stay devi-
ating to the right or left against the needle, loosen the
setscrew
and move the presser guide right
to the
right or left to check positioning. After confirmation, fix
this setting by tightening the setscrew
.
4. Let the right side of the presser main body
touch the presser guide
right
to hold the left side of the presser main body
with the aid
of the presser guide left
. Fix them with two setscrews
. At that
time, make use not to leave any clearance between the presser main
body
and the presser guides right
and left
so that the presser
main body
can move lightly both upward and downward.
5. Upon the completion of adjustments of 1 to 4 above, make adjust-
ments of (5) and (6) described at left.
o When the presser bar guide
is
installed, actions of adjustments
should be taken always at the
lower dead point. Otherwise, the
presser may float to cause ad-
verse feeding of materials.
o If claws of the fancy thread carrier
deviate to the right or left from
the center position, this can be a
cause of needle breakage.
o If there is any clearance on the
right or left of the presser main
body
, this can be a cause of
stitch skipping or needle breakage.
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
