Guides
for
Us
i
ng
Service Manual
To obtain the maximum benefit from this service manual, the
follow
ing information
should
be
studied carefully:
In
order
to keep this manual
simple
and easy to use, a si
ngle
description has been used for all
types of machines. however. where there are differences between the three types, this has been
noted in the margins.
The NUMBERS
(0
,D .D
etc
.) used in this manual refer
to
specific assembly groups as
indicated in the table
of
contents. A given number always refers
to
the same assembly
gro~p
. For
example
, D always refers to arm top
cover
.
The LETTERS (A, B, D,
etc
.) used in this manual refer only to the parts indicated in the
torres
-
ponding picture
of
a given assembly
group
. For example, the letter A does not refer to the same
part in assembly
group
-as it does in assembly
group
D .
REFERENCES
to
the machine (left, right, front, rear, upward. etc.) are made with the machine
being in its normal
upright
position
with
the
control
panel
lac
ing the
operator
.
Procedures for disassembling individual machine systems have been
descr
ibed in detai
l.
In general,
reassembly is
done
in the reverse
order
.
Exceptions
to
this rule are explained whenever necessary.
The adjustments in each
group
should be done in the
order
they have been
descr
ibed without
omitt
ing any. Wherever it is necessary to
check
or set adjustments
of
other
assembly
groups
,
either
belore
or
alter
ad
justment, this
will
be indicated.
Belore
disassembling a machine to find the causes for faulty operations, the machine should be
thorough
ly cleaned and
lubr
icated. In
do
ing so, make sure that no
oil
gets i
nto
the motor.
Before undertaking any
work
on electrical parts (motor, light) disconnect·
plug
from the
electr
i
cal
outlet.
The handwheel must always be turned towards the front
of
the machine when it must be moved
while performing adjustments.
The sets of gears are to be adjusted for smooth run and smallest amount
of
play and blacklash.
Use only
lubricants
which are recommended by SINGER.
Never
apply
abrasives such as emery
or
lapping pastes to
plastic
gears.
8 FORM
723
(1,172)
·-----
