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TROUBLESHOOTING
Ifyo
u notic
e
any ofthe problem
s
lem.
* If thisdoesnotsolvetheproblem, or if theproblem youareexperiencing is notlistedbelow, c ontact yournearest
Brotherdealeror a qualifiedtechnicianto carryout the necessary adjustment.
Problem
The
needle
is
broken.
The
thread
comes
out
of the
needle
hole at the sewing
start.
The upper thread
breaks during
sewing.
listed b elow, refer tothe "Remedy"
Possible
Cause
The needle is installed
incorrectly.
The needle is bent, or the needle tip is
broken
or blocked.
The thread thickness does not match the
needle
size.
The needle
is of the wrong
type.
The needle is touching
the needle plate.
The bobbin case is incorrectly
rotary hook.
The material is being overstretched during
sewing.
The thread take-up lever is not at its highest
position at the sewing start.
The thread
end is too short for the needle
hole at the sewing start.
The thread has been threaded incorrectly.
The needle is bent, or the needle tip is
broken
or blocked.
The needle is installed incorrectly.
The thread is caught on something in the
thread path.
The threads are rubbing together
sewing.
• The upper thread tension is too strong.
• The upper thread tension is too weak.
• The lower
thread
tension
The needle
hole is too small
The needle is of the wrong type.
column forinstructions
Install the needle correctly.
Replace the needle.
Use a needle that is suitable for the
thread.
Use the correct type of needle.
Re-seat the needle plate.
installed
to the
Install the bobbin case correctly.
Be careful not to pull the material too
much.
Set the thread take-up lever to the
highest position at the sewing start.
Approx. 50 mm of thread should be
coming out of the needle hole.
Thread the thread correctly.
Replace the needle.
Install the needle correctly.
• Uncatch
• If the thread is twisted too strongly,
replace the thread.
If the thread is twisted too strongly,
while
replace the thread.
Adjust the thread tension.
is too strong.
Use a needle that is suitable
for the thread.
Use the correct type of needle.
onhow tosolve t heprob-
Remedy
the
thread.
for the thread.
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DB2-B736
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