33
8.2) Adjustment of Thread Guide on
Thread Adjusting Device
When the two tightening screws
are at the center of
the thread guide
on the thread adjusting device, this
is a standard position.
1) Loosen the tightening screw
and move the thread
guide
on the thread adjusting device left or right.
2) For heavy material sewing, move the thread guide
on the thread adjusting device to the left (The thread
length held by the thread take-up lever increases).
3) For light material sewing, move the thread guide
on the thread adjusting device to the right (The
thread length held by the thread take-up lever
decreases).
8.3) Adjustment of Feed Dog Position.
8.3.1) Feed Dog Position When Stitch Length is 0
When stitch length is 0, the feed dog's feed is 0. In
this case, if the feed dog's feed is not 0, please
perform the follow setting.
1) Open the bed cover.
2) Loosen the horizontal crank fixing screw
and
turn the upper shaft pulley. Check if the switch
connection rod
moves, when the upper shaft
pulley is turned.
3) When the switch connection rod
moves, loosen
the switch connection crank fixing screw
and
adjust the angle of the switch by using the angle
adjusting hole of the switch
.
4) When the upper shaft pulley is turned and the
switch connection rod does not move, completely
fix all fixing screws.
8.3.2) Feed Dog Position on Needle Plate
When the stitch length is maximum, the feed dog
position
in the needle plate hole
should be
identical from the front (A) and back (B) on the
needle plate. The minimum figure is 0.7mm. If they
are not identical, please perform the follow setting.
1) Loosen the fixing screw
for the feed dog
supporting crank
.
2) Adjust the feed dog base
to set the distances of
(A) and (B). Completely fix the fixing screw
for the feed dog supporting crank.
3) If (A) and (B) are not identical, loosen the fixing
screw
for the feed list shaft crank to adjust the
location. When adjustment is completed, tightly
fasten the fixing screw
.
[Fig. 8-4]
[Fig. 8-6]
1) In the case of wrong feed adjustment, stitch length could be different when moving forward and
backward.
2) Fix the changer with the changer guide pin . Given that the strong fixing would disturb the
movement of the changer, make sure to fix the changer to the extent that it does not move in the
arrow(X) direction.
Caution
[Fig. 8-5]
Summary of Contents for KM-1070 SERIES
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