Question about Toyota STF39 Mechanical Sewing Machine
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Posted on Jan 02, 2017
It isout of time you need to time it.by adjusting the screw on the bobbin holder turn it left or right and the tension knobe and foot tension.
Posted on Nov 12, 2007
SOURCE: Consew 206RB, threading problem?
This machine has a safety clutch which is designed to protect the hook
mechanism.To access it, place the machine on it's back. About 8-10
inches from the right side you will see an assembly on the main shaft.
You need to hold this assembly with a push button located on the bed of
the machine while you turn the handwheel. It will click in place when
it is in the correct position. Once you've done this the machine should
be back in time so it will sew.Hold the top thread ,turn the handwheel
and draw the bottom thread up before you begin sewing. Place a piece of
fabric under the foot , turn the wheel by hand to make sure there is no
binding and that the thread is being picked up.
Posted on Aug 29, 2008
IT PROBABLY IS THREADED INCORRECTLY. GO SLOWLY BY THE DIAPHRAGM AND MAKE SURE IT IS THREADED CORRECTLY. ALSO MAKE SURE SPOOL PIN HOLDERS ARE IN PLACE THAT HELPS TO GUIDE THE THREAD CORRECTLY.
Posted on Sep 22, 2008
Test your thread quality to start, thread your machine and LIFT the presser foot (this opens the tension disks). Pull your top thread straight back. If you feel no tension no mater how much thread you pull, your thread is good. If that your machine passes that test, then let me know, we can go to step 2. If not, try different spool of thread, same test until you get a smooth pull (tip: always check your thread this way when you thread your machine)
Pull on your threaded bobbin thread while it’s in the machine. Does it pull smooth and even? If so, go to step 3. If not, try a new bobbin (bobbins get bent or distorted if wound too tight).
Clean thoroughly in the hook and bobbin case area and oil 1-2 drop is all.
Thread knotting on the bobbin can be a lot of things but here's some guidance:
If the thread is loose on the bottom of the fabric, it's actually the top thread is too loose. Think of 2 little elves playing tug of war in your machine, one on toip and one underneath. If you have loops on bottom, the top needs to pull harder (tighten top tension)
Jamming bobbin case:
If it is damaged from turning out of place once, it could have rough spots on it that makes the thread hang on it, and keeps making it turn over and over. Use a finger nail board (fine sanding) and smoothall rough spots. Then reset the bobbin case taking care to put the notch in the bobbin case in alignment with the proper spot in the machine (basically 5 o’clock) when looking at the round area where the bobbin case goes.
Posted on Mar 18, 2009
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