18PROBLEMSOLVING
Under
normal
conditions,
if
you
carefully
follow
instruction
for
operating,
no difficult
or
special
adjustment
is
wgcrenure
of
machine.
Check
your
machine
before
you
call
for
service.
PROBLEM
Machine
does
Machine
does
•
Pressure
on
presser
foot
•
Increase
pressure
by
turning
not
feed
insufficient
pressure
regulator
screw
to
right
properly
•
Differential
feed
not
set
correctly
•
Adjust
differential
feed
Needle Breaks
•
Bent
or
blunt
needle
•
Insert
new
needle
•
Needle
inserted
incorrectly
•
Reset needle
•
Pulling
fabric
while
sewing
•
Do
not pull
fabric
•
Re-thread
machine
new
Skipphig
•Re-thread
machine
Irregular
•
Tension
not
adjusted
properly
•
Check
thread
tensions
tches
Puckering
•
Needle
thread tensions
are
too
•
Loosen
needle
thraad
tensions
tight
•
Improper
threading
•
Re-thread
machine
•
Need
drfferential
feed
•
Set
differential
feed
0.7
-
N

CAUSE

CORRECTION

•
Not
plugged

in

properly
•
Plug cord
into
electrical
outlet
and
machine
properly

—25—