Singer 20U-109 Instruction Manual - Page 32

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Zigzag Sewing Machine Instruction Manual and Parts List 4. Maintenance 4.1. Machine Head Cleaning Clean the machine periodically with a soft and dry cloth to remove the excess of dust on the machine head. Do not use any kind of lacquer thinner to wipe the surface. 4.2. Lubrication If the machine was idle for a long time, lubricate the machine according to the instructions of topics 3.4. 4.3. Safety Inspection Check periodically if all safety devices are properly installed and adjusted. Check if all fixing and supporting screws of the machine head are adequately tighten. Check if the v-belt is not excessively worn and if it has the right tension. Check if there is no overheating in the electrical motor and check if the power cord and plug are not damaged.

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Zigzag
Sewing
Machine
Instruction
Manual
and
Parts
List
4.
Maintenance
4.1.
Machine
Head
Cleaning
Clean
the
machine
periodically
with
a
soft
and
dry
cloth
to
remove
the
excess
of
dust
on
the
machine
head.
Do
not
use
any
kind
of
lacquer
thinner
to
wipe
the
surface.
4.2.
Lubrication
If
the
machine
was
idle
for
a
long
time,
lubricate
the
machine
according
to
the
instructions
of
topics
3.4.
4.3.
Safety
Inspection
Check
periodically
if
all
safety
devices
are
properly
installed
and
adjusted.
Check
if
all
fixing
and
supporting
screws
of
the
machine
head
are
adequately
tighten.
Check
if
the
v
-belt
is
not
excessively
worn
and
if
it
has
the
right
tension.
Check
if
there
is
no
overheating
in
the
electrical
motor
and
check
if
the
power
cord
and
plug
are
not
damaged.