5.
ASSEMBLING
ADJUSTMENT
PROCEDURES
[]]
NEEDLE BAR MECHANISM
~
@)
(B571)
@
Procedures
1 Insert needle bar 0 into needle bar clamp 8 .
2 Turn the pulley until the needle bar clamp 8 is raised
to
the highest position, and then temporarily
fasten the needle bar
0 at a height where the needle clamp 0 is barely hidden in needle bar bushing
lower
e.
3 Install face plate 8 to the machine body.
(Install stopper spring
..
at the same time, and adjust it when face plate cover 8 is closed without
cranky.)
4 Install needle mechanism cover 8
to
the machine body firmly putting
of
face plate
CD
lightly, then
take care
not
make any clearance.
5 Install needle thread take-up supporter 0
to
needle bar clamp
8.
6 Install needle thread guide (A)
0)
to
face plate
8.
7 Install needle thread take-up
f.D)
to needle thread
take-up supporter
0 .
• Normally, it should be fastened in the center
of
its
adjustable range.
,-......
Lower its position
to
increase the needle thread ten-
sion.
Raise its position to decrease the needle thread
ten-
sion.
I Safety Stitch I Install chain stitch thread guide m
to
face plate
CD.
• Normally, it should be fastened in the center
of
its
adjustable range.
Raise its position
if
the needle thread winds itself
around the looper.
Also raise its position to increase the needle thread
tension.
Lower its position to decrease the needle thread ten-
sion.
Q'ty
of
screw
-16-
Q'ty
of
screw
4
3 (B581)
7
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