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check to see if the feed dogs are dropped(darning mode), or lift the needleplate and clean out lint or debris stuck in feed dogs. when the needle is in the highest position the feed dogs should be about 1mm above the needle plate.
1. Clean the hook area again. Put one drop of oil on the race that the bobbin case rides on.
2. Make sure the holder on the bobbin case area is held secure while it is turning. It will need to be adjusted if the bobbin case wants to fall off of the race or has a lot of room when you move the handwheel back and forth. Test this by turning the hand wheel back and forth.
3. Once this is finished thread the machine through a new needle. a. Place the tension on four.
b. Now, turn the hand wheel towards you and hold the thread in back of the needle.
4. While doing this watch to see if the bobbin thread is pulled by the hook around the needle thread without getting stuck. (Needle now in rising motion still under plate.)
**If the bobbin thread cannot be pulled above the plate try to increase the top tension a small amount.
**If it still can't be pulled above the plate then loosen the bobbin a bit.
This may take a little while to get it right. Always, try to adjust from the top tension first.
Very likely there is a thread or two stuck in the bobbin area. Open up the bobbin door, remove bobbin and bobbin case. Now try to turn it with the handwheel. If still no action, then look closely at the socket where the bobbin case fit into. There are 2 black plastic levers -one on each side. Move each one outward. This will allow the center to easily fall out.
Now move the hand wheel. If it is still stuck, then remove the needle plate. Remove two screws to allow the plate to come off. Now you have a clear view of all the mechanism around the needle and bobbin area. Remove stray dusty bunnies, thread etc.
If that does not do it, then you may have an issue with the belt or motor -but not too likely.
Reply if you are still having problems.
Look at the feed dogs to see if they are rising above the needle plate at least 1 mm. If not rising lint may have felted between the feed dogs and the needle plate. It could also be the feed dogs have been lowered, or the height has slipped. If the feed dogs are above the needle plate turn the hand wheel and see if they are moving from the front of the machine to the back. If not it is a length adjustment. If this is normal the pressure on the fabric may be too low. Another problem may be the timing of the feed dogs. The feed dogs should rise above the needle plate when the needle leaves the fabric and descend when the needle comes down into the fabric. This requires an expert to fix.
Check if the feed dogs are moving. Also check if they are one mm above the needle plate. Inspect the needle plate and presser foot for burrs. Often there is lint under the needle plate stuck in the feed dogs that keep the feed dogs from contacting the fabric.
Take out the material, take off the foot and needle. Stick your finger on the feed dogs and hand turn the hand wheel like sewing. Does the feed dog come slightly above the surface of the needle plate? If it does.... tighten the presser foot tension.
If it doesn't locate the switch that drops the feed dog. Make sure it's in up position.
If neither of those solutions work. Remove the needle plate and see if the feed dog or mechanism that runs it is broken
When you get that error message it usally means there is a jam in the machine that is causing the motor to work to hard so it keeps you from burning up the motor try taking your needle plate off and bobbin case out and then put your needle plate back on and then the bobbin case if that doesnt work try looking at the take-up lever there might be thread wraped around it soaking up the oil and causing a bind