Brother 888-F52 Operation Manual page 134

Troubleshooting
Symptom
Screw of the presser foot holder is loose.
Fabric is too thick.
Needle breaks. Fabric is fed forcefully when sewing thick fabric
or thick seams.
Stitch length is too short.
Bobbin thread is incorrectly wound.
Machine is not threaded correctly (used the
wrong spool cap, spool cap is loose, the thread
did not catch the needle bar threader, etc.)
Knotted or tangled thread is being used.
The selected needle is not appropriate for the
thread being used.
Upper thread tension is too tight.
Thread is tangled.
Needle is turned, bent or the point is dull.
Needle is installed incorrectly.
Upper thread
There are scratches around the opening in the
breaks.
needle plate.
There are scratches around the opening in the
presser foot.
There are scratches on the bobbin case.
Using improper needle or thread for the
selected fabric.
While sewing, the thread became knotted or
tangled.
A bobbin designed specifically for this machine
is not used.
The thread is
Upper threading is incorrect.
tangled on the
wrong side of the
fabric.
Using improper needle or thread for the
selected fabric.
The upper thread is
The bobbin thread is incorrectly installed.
too tight.
Bobbin is set incorrectly.
Bobbin thread is incorrectly wound.
There are scratches on the bobbin or it doesn't
rotate properly.
Bobbin thread
breaks.
Thread is tangled.
A bobbin designed specifically for this machine
is not used.
A-14
Probable Cause Remedy
Securely tighten the screw of the presser foot.
Use fabric that the needle can pierce when the
handwheel is turned.
Allow the fabric to be fed without being
forcefully pushed.
Adjust the stitch length.
Use a correctly wound bobbin.
Rethread the machine correctly.
Remove any knots or tangles.
Select a needle that is appropriate for the type
of thread being used.
Adjust the thread tension.
Use scissors, etc., to cut the tangled thread and
remove it from the race, etc.
Replace the needle.
Reinstall the needle correctly.
Replace the needle plate, or consult your
authorized Brother dealer.
Replace the presser foot, or consult your
authorized Brother dealer.
Replace the bobbin case, or consult your
authorized Brother dealer.
Check the "Fabric/Thread/Needle
Combinations" chart.
Rethread upper and lower thread.
Incorrect bobbins will not work properly. Only
use a bobbin designed specifically for this
machine.
Check the steps for threading the machine and
rethread the machine.
Be sure that the presser foot is in the raised
position when threading the machine so that the
upper thread sets properly in the upper tension.
Check the "Fabric/Thread/Needle
Combinations" chart.
Correctly install the bobbin thread.
Reset the bobbin correctly.
Use a correctly wound bobbin.
Replace the bobbin.
Use scissors, etc. to cut the tangled thread and
remove it from the race, etc.
Incorrect bobbins will not work properly. Only
use a bobbin designed specifically for this
machine.
Reference
B-32
B-28, S-4
S-4
B-39
B-15
B-21
–
B-28
B-40
A-5
B-29
B-29
A-8
B-31
A-2
B-28
B-15, B-21
B-15
B-21, A-5
B-28
B-18, A-4
B-18
B-15
B-18
A-8
B-15