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Maintenance
4. Troubleshooting
What is the problem? Check the following possibilities before taking the sewing machine in for repair.
Trouble Cause Countermeasure Page
Does not rotate
The power plug is not inserted Connect the power plug correctly 10
The power switch is off Turn the power switch on 10
Does not work The declutch knob is in the lower
thread winding position
Move the declutch knob back to the
original position (needle position)
14
Thread is tangled in the hook, or there
is a broken needle in the hook
Clean the hook 46
Loud noise
The oil has run out Oil the shuttle race 46
Slow rotation
There is thread waste or dust in the
hook or feed dog
Remove thread waste or dust 46
Broken needle
The needle is incorrectly installed Install the needle correctly 23
The needle clamp screw is loose Firmly tighten the screw 23
The needle is too fine for the fabric
Use a needle appropriate to the
fabric
24
The tension of the upper thread is too
tight
Adjust the thread tension 30
The fabric is being pulled too strongly Do not pull the fabric strongly 25
The wrong presser foot is being used Use a correct presser foot
The bobbin case is not in the correct
position
Put the bobbin case in the correct
position
15
Broken upper
thread
The upper and lower thread are not
correctly threaded
Thread the upper and lower thread
again
15
16
The thread is tangled in the bobbin
case or hook
Remove thread waste from the feed
dog and hook
46
The tension of the upper thread is too
tight
Adjust the thread tension 30
The needle is bent
Replace with a good needle 23
The point of the needle is damaged
Broken lower
thread
The lower thread is not correctly
threaded
Thread the lower thread correctly 15
Fabric not fed
through
There is thread waste in the feed dog
Remove thread waste from the feed
dog and hook
46
A darning adapter has been installed Remove the darning adapter 40
The pattern selection dial is set to
"1" or "3"
Set a correct pattern
51


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