Singer 328 - Page 55

a)
In
Case
the dinension
is
too
snall:
fhe
Iqain
Drum
cear
becomes
engaged
lJith
the
Rack
too
nruch
rvhich
results
in
the
Carriage
becoming
too
heavy
during
operation.
The
position
of
the Drum Unit
becomes
more
forrrald
than
the standard
position
so
thaE the
selected
needles,
when
moved
back, wjlt
coltide
with the
Separation
Cam.
b)
Sub
Drun
Latch Needle
Fig.79
Correcting
Methods:
When
the dimension
is smaller
or larger
than
Rack
the
standald
rneasure-
ment:
Bend
the
Needle
Bed Rack
backwards
or
with the
Rack Adjusting
Too1,
as
shown
eveness
of the Rack
after
adjustment.
forwards,
as
the
case may
be,
in
Fig.
80, below,
Check
the
Needle Bed
Fig. 80
Mai n Dmn
Adjustment