10 Timing of Thread Tension Releasing Mechanism
(a)When moving the lifting lever (1)for knee
lifter,
upper
thread
is adjusted to loosen.
(b)
Adjustment
Pull-up
the
presser
bar
lifter (3),
clearance
should be made over 1 mm between tip of
the
tension releasing plate
and
tension disc,
and
then
tighten
the
screws
(2)
on
the
tension
releasing
plate.
11 Removal of
Shuttle
Race Body
Tighten the shuttle race back spring screw
(1),
then loosen and take offthe two shuttle race
screws (2) and remove
the
shuttle race body and shuttle hook.
(Note)
In
case
of
the
removal of
shuttle
race body,
without tightening of shuttle race back spring
screw
(1),
shuttle
race
back
and
shuttle
race
back
spring
may
run
out
and/or
may
difficult to
set
the
shuttle
race body.
The shuttle race backspring screw (1)is surely
loosened, while the materials are being sewn.
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