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TROUBLE SHOOTING
13. TROUBLE SHOOTING
What is the problem? Check the following possibilities before contacting the service center
for repair.
PROBLEM CAUSE SOLUTION
REFERENCE
PAGE
Machine does
not sew
Not plugged in properly Plug the cord into the outlet
and the machine properly
P.6
Machine does not
feed properly
Pressure on the presser foot
not sufficient
Differential feed adjusting dial
not set
correctly
Increase the pressure by
tightening the adjustment
screw
P.16
Adjust the differential feed
ratio
P.19
Needle breaks
Bent or dull needle
Needle inserted incorrectly
Pulling the fabric too firmly
while sewing
Insert new needle
Reset needle
P.9
Do not use force to pull the
fabric
Breaking threads
Improper threading
Thread tension(s) too tight
Incorrect tension setting of
needle
Rethread the machine P.11 到 P.14
Reset thread tension(s) P.17
Reset needle/change to new
needle
P.9
Skipping stitches
Bent or dull needle
Needle inserted incorrectly
Improper threading
Insert new needle
Reset needle
P.9
Rethread the machine P.11 到 P.14
Irregular stitches
Tension not adjusted properly Check thread tensions
P.17 到 P.18
Puckering
Needle thread tensions are
too tight
Improper threading
Loosen needle thread
tension
P.18
Rethread the machine P.11
Set differential feed ratio
between 0.7
到 N
P.19
If the above treatments do not solve the problem,
contact the service center as described in your
warranty.
When calling for service, please note the MODEL
and SERIES that are inscribed on the back of
your machine.
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