50
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
Summary of Contents for ESM21
Page 1: ......
Page 34: ...33 Sewing It is easier to sew accurately if a blind stitch foot is used Optional Accessory ...
Page 54: ...53 Others ...
Page 55: ......