White 1515 Sewing Machine User Manual


 
CHECKING
P
1
ERFORMANCE
PROBLEMS
WHAT
TO
DO
0
PROBLEM
PROBABLE
CAUSE
CORRECTION
Feed
dog
down.
Raise
feed
dog.
Fabric
not
Machine
not
moving.
Moving
stop
motion.
moving
Stitch
length
dial
in 0
position
Moving
dial
to
1
4
Light
pressure
on
presser
foot
Increase
pressure
on
presser
foot
Incorrect
setting
of
needle
Reset
needle
Needle
bent
Replace
new
needle
Breaking
Needle
Pulling
fabric.
‘—
Do
not
pull
fabric.
Incorrect
using
needle,
thread
and
fabric.
Correct
using
needle,
thread,
and
fabric.
Incorrect
position
of
zigzag
width
dial.
-
Moving
to
correct
position.
Improper
threading.
Rethread
machine.
Breaking
Upper
Tight
upper
thread
tension.
Loosen
upper
thread
tension.
Thread
Needle
bent.
Replace
new
needle.
Nicks
or
burrs
on
shuttle.
Replace
shuttle,
or
polish
off
burrs
completely.
Tight
bobbin
thread
tension,
Loosen
bobbin
thread
tension.
Breadkin
Bobbin
Incorrect
setting
of
needle.
-—
Reset
needle.
Thread
Improper threading.
Reth
read
machine.
Dust
and
thread
in
shuttle.
Clean
shuttle.
Machine
Jamming
No
oil.
Need
oil.
Knocking
Noise
Dust
and
thread
in
shuttle
Clean
shuttle
Tension
too
tight
Reset
Puckering
Sewing
foot
pressure
too
strong.
-
Regulating
sewing
fqot
pressure.
-
Incorrect
using
fabric,
needle,
and
thread.
--
Correct
using
fabric,
needle
and
thread.