JUKI PS-700 - Needle-To-Hook Relationship; Adjusting the Height of the Intermediate Presser

– 17 –
4-9. Adjusting the height of the intermediate presser
1) As a guide, temporarily tighten setscrew
❶
while
aligning second marker line
A
of the intermediate
presser
❷
with the center of setscrew
❶
.
2) Lower the intermediate presser to its lower dead
point (the state where the tip of needle is away
from needle hole guide
B
). In this state, adjust
the vertical position of intermediate presser
❷
so
that the distance from the undersurface of inter-
mediate presser
❷
to the top surface of needle
hole guide
B
of the throat plate
❸
becomes 0.5
to 1 mm (reference value). Then, tighten setscrew
❶
. (Adjust this distance according to the thick-
ness of material.)
1. When raising the intermediate presser height, turn the pulley by hand to lower the needle bar,
and conrm that the needle bar does not interfere with the intermediate presser.
2. Take care not to allow your hands and ngers to be caught in the disc presser and the
intermediate presser.
1) Lift the needle bar from its lower dead point by
2 ± 0.15 mm. In this state, adjust the needle bar
height and the hook position.
2) The distance from the blade point of hook to the
top end of the needle eyelet must be adjusted to
1.2 ± 0.15 mm.
3) When observing from the front face of the sewing
machine, the blade point of hook seems to over-
lap with the center of needle.
4) When observing from the side face of the sewing
machine, the clearance provided between the
blade point of hook and the scarf of needle is 0.01
to 0.05 mm.
4-8. Needle-to-hook relationship
0.01 to 0.05 mm
Front face Side face
1.2 ± 0.15 mm
2 ± 0.15 mm
If thread breakage occurs, the thread can
be tangled in the hook. In such a case,
remove the thread being tangled in the
hook carefully. Then, re-start sewing.
❶
❸
❷
B
A
0.5 to 1 mm
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.