Symptom
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The thread becomes tangled on the wrong side of the fabric.
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After starting sewing, a rattling noise is made and sewing cannot continue.
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Looking under the fabric, there is tangled thread in the bobbin case.
Cause
Incorrect upper threading
If the upper thread is incorrectly threaded, the upper thread passed through the fabric cannot be firmly pulled up and the upper thread becomes tangled in the bobbin case, causing a rattling noise.
Remedy/check details
Remove the tangled thread, and then correct the upper threading.
Removing the tangled thread
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Turn off the sewing machine.
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Remove the tangled thread. If it cannot be removed, cut the thread with scissors.
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If the threads remain under the needle plate, remove the needle plate, and then remove the threads.
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Raise the presser foot lever to raise the presser foot.
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Remove the upper thread from the machine.
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If the needle plate and the bobbin case were removed from the machine, correctly install the bobbin case and attach the needle plate.
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If the bobbin was removed from the bobbin case, correctly install the bobbin.
Threading the upper thread
[1] Preparing for threading
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Raise the presser foot lever to raise the presser foot.
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Turn on the machine.
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Press
(Needle position button) once or twice to raise the needle.
![img05 img05](/g/b/img/faqend/faqh00100036_025/eu_ot/en/2411770/faqh036_fig2205.gif)
Be sure that the presser foot is raise and the needle is correctly raised. If the operation is not performed properly, it may cause troubles during sewing and poor sewing results.
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Turn off the machine.
[2] Threading the upper thread
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Correctly set the spool of thread to the spool pin.
![img06 img06](/g/b/img/faqend/faqh00100036_025/eu_ot/en/2411771/faqh036_fig2206.gif)
* Make sure that the thread unwinds as shown.
-
While holding the thread from the spool with your right hand, pass the thread toward you, in the groove on the thread guide.
![img07 img07](/g/b/img/faqend/faqh00100036_025/eu_ot/en/2411772/faqh036_fig2207.gif) |
(1) Thread guide
(2) Spring |
* Make sure that the spring in the groove catches the thread.
-
Feed the upper thread as shown in the following illustration.
![img08 img08](/g/b/img/faqend/faqh00100036_025/eu_ot/en/2411773/faqh036_fig2208.gif) |
(1) Thread take-up lever |
* Make sure you guide the thread through the thread take-up lever from right to left as shown in the following illustration.
-
Slide the thread behind the needle bar thread guide.
![img09 img09](/g/b/img/faqend/faqh00100036_025/eu_ot/en/2411774/faqh036_fig2209.gif) |
(1) Needle bar thread guide |
[3] Threading the needle
-
Lower the presser foot lever.
![img10 img10](/g/b/img/faqend/faqh00100036_025/eu_ot/en/2411786/faqh036_fig2310.gif)
-
While lowering the needle threader lever fully
, hook the thread onto the guide
.
![img13 img13](/g/b/img/faqend/faqh00100036_025/eu_ot/en/2411789/faqh036_fig2313.gif)
-
Push back the needle threader lever until it stops
, and pass the thread in front of the needle. Make sure that the thread is under the hook that has come through the eye of the needle and the hook catches the thread
.
![img16 img16](/g/b/img/faqend/faqh00100036_025/eu_ot/en/2411792/faqh036_fig2316.gif)
-
Return the needle threader lever to the front slowly
, and then release the lever slowly.
![img18 img18](/g/b/img/faqend/faqh00100036_025/eu_ot/en/2411794/faqh036_fig2318.gif)
-
Carefully pull the loop of the thread through the eye of the needle to pull out the end of the thread.
![img19 img19](/g/b/img/faqend/faqh00100036_025/eu_ot/en/2411795/faqh036_fig2319.gif)
-
Raise the presser foot lever.
![img20 img20](/g/b/img/faqend/faqh00100036_025/eu_ot/en/2411796/faqh036_fig2320.gif)
[4] Drawing up the bobbin thread
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Lightly hold the end of the upper thread.
![img21 img21](/g/b/img/faqend/faqh00100036_025/eu_ot/en/2411800/faqh036_fig2522.gif)
-
While holding the end of the upper thread, press
(Needle position button) twice to lower and raise the needle to draw up the bobbin thread.
![img23 img23](/g/b/img/faqend/faqh00100036_025/eu_ot/en/2411802/faqh036_fig2523.gif)
-
Pull on the upper thread to draw up the bobbin thread.
Next, pull out about 10 cm (4 inches) of both threads toward the back under the presser foot.
![img24 img24](/g/b/img/faqend/faqh00100036_025/eu_ot/en/2411803/faqh036_fig2524.gif) |
(1) Bobbin thread
(2) Upper thread
(3) Pull out about 10 cm (4 inches) |