
Inclination
of
the
feed
dog
(The
standard inclination
of
the feed dog is obtained by adjusting the feed dog
so that it becomes horizontal when it rises above tha top surface
of
the throat
plate)
o
16-.
ADJUSTING HEIGHT
OF
THE NEEDLE BAR (Fig.17)
1) Set the zigzag width to
"0
"o
Bring the needle to the
center
of
zigzag stroke;
2)
Remove the presser foot, throat plate, semicircle plate
and feed dog;
3 ) Place the semicircle plate A on the plane, to which the
throat plate
is
to be attached,
of
the bedo Loosen the screw (D,
and adjust so that a height difference
of
timing gauge 1 is
provided between the lowest end
of
the needle bar and the top
surface
of
the semicircle plateo
17
..
ADJUSTING THE NEEDLE TO HOOK
TIMING
AND
THE NEEDLE GUARD
(Fig.18-. 19)
1)
Positioning
the
hook:
(DAfter the completion
of
the
adjustment
of
the needle bar height, adjust the hook using
gauge 2 so that the blade point
of
the hook is aligned with the
center
of
the needleo
®Confirmation:
maximize the zigzag
width, bring the needle to the leftmost position
of
the zigzag
strokeo Now, confirm that the top end
of
the needle eyelet
is
spaced 0.2-0.Smm away from the blade point
of
the hooko
2)
Adjusting the needle guard: (!)Maximize the zigzag
width o Bend the needle guard to adjust so that the needle
does not come
in
contact with the blade point
of
the both at
the leftmost and rightmost positions
of
the zigzag
strokeo At this time, adjust the clearance provided
between the needle and the blade point
of
the hook
to
0
to
0.05
mmo
®The
needle guard functions to
keep the needle away from the blade point
of
the
hook, thereby preventing damage to the blade
point
of
the hooko Whenever you have replaced
the hook with a new one. be sure to adjust the
position
of
the needle guardo
18-.
ADJUSTING THE AMOUNT OF OIL IN THE
HOOK
(Fig.20)
I ) Tilt machine head, and adjust the amount
of
oil in the hook by turning the adjusting screw
CD
mounted
on
the
hook driving shaft dear boxo Loosen the nut
@,
then turn the adjusting screw
CDo
2)
After the adjustment, fix the adjusting screw by tightening the nut
®o
-8-
From the library of: Superior Sewing Machine & Supply LLC