Singer 20U33 - Needle and Rotating Hook Timing; Timing the Rotating Hook

From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
RELATION
BETWEEN
NEEDLE
.AND
ROTATING
HOOK
A.
TO
TIME
TIIE
ROTATING
HOOK
CHECK:
1.
Set
needle
position
selector
on
"center"
and
stitch
width
regulator
for
straight
stitching.
2.
Turn
machine
pulley
over
toward
you
until
needle
rises
2.54
ma
from
its
lowest
position
and
the
lower
timing
mark
is
level
with
the
underside
of
needle
bar
timing
indicator
plate.
When
the
needle
bar
is
in
the
above
position,
the
point
of
rotating
hook
should
be
at
the
center
of
the
needle
as
shown
in
Fig.
2.
ADJUSTMEN1:
If
the
t1m1ng
of
rotating
hook
in
relation
to
the
needle
requires
correc-
tion,
make
adjustments
as
instructed
below.
1.
Set
machine
for
straight
stitching
at
center
needle
position.
2.
Remove
rotating
hook
shaft
bevel
gear
cover.
3.
Loosen
two
rotating
hook
set
screws
and
adjust
rotating
hook
as
required.
Retighten
set
screws.
'
Needle
'I
Hook
Point
;I
0.5
2.42
2.57
:
I:
I
4.25
:
I.
I
I
I '
I
2.54
r
'
'
' I
\j/
1.21
'I'
)'.
\I/
'j,c
'
Left
Needle
Position
Center
Needle
Position
Right
Needle
Position
Fig.
2
B.
~HECK
TIMING
OF
ROTATING
HOOK
AND
NEEDLE
(AT
LEFT,
CENTER
AND
RIGITT
NEEDLE
POSITIONS)
1.
Turn
machine
pulley
over
toward
you and make
sure
the
needle
is
free
from
any
interference
when
it
is
swung from minimum
to
maximum
bight
at
left,
center
and
right
needle
positions.
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