2.
REMOVING
THE
TIMING
BELT
Remove the arm top cover (F, Fig. 2) and remove the timing belt from
the
belt pulley, loosen
the
collar
set
screws (1, Fig. 13).
Loosen
the two set screws (G, Fig. 2) for the handwheel and remove the
handwheel adjusting screw (14, Fig. 1), draw out the handwheel from the
arm
shaft.
Loosen
the arm shaft rear bushing set screw (2, Fig.
13),
pull out the
rear bushing (3, Fig. 13) from the arm hole.
In case of the machine with reverse stitch mechanism,
draw
out the reverse
lever (E, Fig. 2) with its shaft.
Removing or inserting the timing belt is made through the hole drawn out
the rear bushing.
After inserting the belt correctly, replace the rear bushing, screws, the arm
top
cover,
etc. to their
original
places.
Finally,
adjust
the
timing
marks
mentioned
in
the
item
No.
1.
ADJUSTING
THE
HEIGHT
OF
THE
FEED
DOG
The
maximum height of the feed dog (1) from the surface of the needle
plate
(2) is normally 1 mm.
To
adjust this height, tilt
the
machine,
turn
the
handwheel
so as to raise
the
feed dog to its highest point.
Loosen the set screw (4, Fig. 3) and raise or lower the feed dog as may
be
required.
Securely tighten the set screw.
ADJUSTING THE
TIMING
OF THE
NEEDLE
PLATE,
NEEDLE
&
FEEDER
1.
THE
POSITION
OF
THE
FEEDER
AGAINST
THE
NEEDLE
PLATE
Adjust
the
feed
motion
to the
maximum
and
loosen
the
screw
(4,
Fig.
12).
Set the
position
of the
feeder
so that both
clearances
A and B
(Fig.
15)
are
equal
before
starting
feed
motion
and
after
finishing
the
feed.
Securely
tighten
the
screw.
r
1
mm
Fig.
14
Fig.
15
From the library of: Superior Sewing Machine & Supply LLC
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