OPERATION
26 Adjustment fot
change
of
needle-to-needle
distance
(LU2-4430)
(1) Replace the throat plate, feed dog and needle clamp.
(Since the throat plate and feed dog are special parts
designed
for thread trimmingmachine,be
sure
to
use
those
specified by us.)
(2) Lean
the
machine
head
backward.
(3)
Loosen
two
connecting
link
clamp
bolts(j).
(4)
Remove
the
spring
.
(5)
Loosen
the
hook
bracket
clamp
screws
(§)
and
(§)
and
adjust
gap
between
each
needle
and
hook.
(6) When
the
needles
and
hooks
have been
adjusted,
install
the
spring
(7)
Contact
the
rocking
cranks
@
and
(§)
to
the
stopper
pins
(1)
and
and
tighten
the
connecting
link
clamp
bolt(^.
(8)
Turn
the
balance wheel by
hand
until
the
needles reach
the
lowest
position.
(9)
Loosen
the
nuts
(§)
and
(§).
(10)
Depress
the
cam
follower
crank
(E)
and
adjust
the
connecting
rod
(Q
so
that
the
cam
roller
can
smoothly
enter
the
groove
of
thread
trimmer
cam.
(11) Adjustment of the cam groove and the cam roller
(a) Push
the
cam follower crank so
that
the cam roller enters into
the
cam groove.
(b)Turn the connecting rod (L)and adjust the clearance between the cam roller and the cam
groove
surface
N as
small
as
possible,
and
tighten
the
nuts
(g)
and
(H)
.
(c) Push the cam follower crank again and check that the cam roller enters into the
thread
trimmer
cam
groove
smoothly.
Thread
trimmer
rocking
crank
©
Connecting link
Hook
bracket
Screw
6$
Stopper
pin©
-19-
Cam
roller
Cam
groove
Screw
@
Hook
bracket
Spring'
w
N-phase
Nut 'H '.QT
Connectirtgrod^'Lj
Bolt
(XI
Stopper
pin©
\ \
^ut
Thread
t.immor
cam
Thread
trimmer
>5)
rocking crank {jjl
,C3in
follower
crank
.
Thread
trimmer
cam
.
Lower
1Shalt
Cam
follower
crank (1^
Cam
roller
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
To Next Page
Loading...
Need help?
General
