Singer 4671 - Performance Checklist

PERFORMANCE
CHECKLIST
When
sewing
ditficulties
occur,
look
back
through
this
manual
to
make
sure
you
are correctly
following
the
instructions,
If you
still have
a
problem,
the
reminders
below
may
help you
to
correct
it,
Needle
Does Not
Move
Lower
Thread
Breaks
Is machine
connected
to electrical
supply?
Is bobbin
correctly
wound?
is the
power and
light
switch on?
Is
bobbin
correctly
inserted
in to
Is controller
connected?
bobbin
case?
Is
air supply
from controller
clear?
Is bobbin
case
correctly
threaded?
Needle
Moves
But Stitch
Skipped
Stitches
Is Not
Formed
Is machine
properly
threaded?
Is needle
defective?
Is fabric firmly
held down?
is
needlefully
inserted
into
needle clamp?
1 needle
correct
style
and size?
Are bobbin
and needle
correctly
threaded?
Is needle
straight
and sharp?
is bobbin
correctly
inserted
into
bobbin
g case?
Fabric
Does
Not Move
Properly
a Needle
Breaks
Under
Presser
Foot
Is needle
straight
and
sharpg
Is
presser
fool
correctly
attached
to
Is
needle
correct
size?
machine?
Is needle
fully
inserted
into
needle
clamp?
Is
presser
loot
lowered?
Are
controls
properly
set
9
Is stitch
lengtth
correctly
set?
Are
accessories
correct
tor
application?
Bobbin
Winding
Difficulties
Is
thread unwinding
freely
from spool?
Is bobbin
winder
engaged?
Is
thread end
securely
held at
start of
wind?
Upper Thread
Breaks
Is machine
properly
threaded?
Is thread
freely
unwinding
from spool?
Is proper
spool
cap being
used?
Is needle
correct
size
for thread?
Is
upper thread
tension
too tight?
Is bobbin
case
properly inserted?
Is bobbin
rim free of
nicks?
34