White 2335 - CHECKING PERFORMANCE PROBLEMS - TROUBLESHOOTING

CHECKING
PERFORMANCE
PROBLEMS
-
TROUBLESHOOTING
Problem
IProbabie
cause
What
to
do
-
Feed
teeth
down
-
Raise
feed
teeth
Fabric
does
not
-
Stitch
length
dial
“0’
position
Set
dial
between
1
and
4
move
-
Light
presser
foot
pressure
-
Increase
pressure
- Incorrect
insertion
of
needle
-
Re-insert
needle
-
Bent
needle
-
Replace
needle
Breaking
needle
-
Fabric
is
being
pulled
- Do not
pull
fabric
-
Needle,
thread
and
fabric
do
-
Use correct
needle
and
thread
not
match
-
Faulty
adjustment
of
zigzag
width
- Re-adjust
zigzag
width
Breaking
upper
- Improper
threading
-
Re-thread
machine
thread
- Tight
upper
thread
tension
I
-
Reduce
upper
thread
tension
-
Bent
needle
-
Scratches
or
nicks
on
bobbin
-
Replace
needle
- Polish
or
replace
bobbin
case
case
bobbin
-
Tight
bobbin
thread
tension
- Reduce
bobbin
thread
tension
-
Incorrect
insertion
of
needle
- Re-insert
needle
- Lint
or
thread
in
bobbin
case
-
Clean
bobbin
case
thread
-
Improper
threading
-
Rethread
machine
-
Excessive
tension
- Re-adjust
tension
- Presser
foot
pressure
too
-
Reduce
pressure
accordingly
Machine
strong
-
Needle,
thread
and
fabric
do
-
Choose
proper
needle
and
jamming
not
match
thread
according
to
type
of
fabric
-
No
oil
-
Oil
moving
parts
-
Tension
too
tight
- Reset
-
Sewing
foot
pressure
too
- Reduce
sewing
foot
pressure
Puckering
I
strong
I
-
Incorrect
fabric,
needle,
-
Use correct
fabric,
needle
and
thread
and
thread
-
37
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