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Sometimes it is just a bunch of lint built up under the needle plate between the feed dogs. Remove the needle plate (usually two screws) and clean out the lint.
Hope that helps!
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.
Ignore all the other comments, they are wrong. The feed dogs are driven by the feed driver mechanism, turn the hand-wheel forward and the feed dogs will come up. (Providing you have the feed dog switch to the up position).
This is the main link for brother usa parts finder Industrial Garment Printers and Industrial Sewing Machines they should have the part or know where you can get it . If you don't find it online call and talk to them. If the bobbin case doesn't fix it you may need the timing set, but I would try the bobbin case first.
Oh yuck! this sounds terrible. Sounds like maybe you have two problems going on and feeding into each other. The first problem may be that the machine needs a good cleaning Here's what I'd do:
1. Take apart the bobbin assembly and clean it out completely. 2. Take off the feed dogs if you can (first, you'll need to take off the throat plate.) Clean the feed dogs as thoroughly as possible. 3. Brush out any/all lint, threads, dust, etc. 4. Oil the machine. 5. Make sure you're using the right size needle for the fabric 6. Make sure you're using the right presser foot
The other problem may be that the needle is hitting the throat plate or something else it shouldn't. Using a new needle, slowly move it down to see where it's hitting or rubbing. Check that the needle is inserted as far in as it will go and that it's being held securely.
When you start sewing, hold the upper thread and the bobbin thread together behind the needle so there's no slack. This usually prevents 'bird nests'.
hi! there if your feed dog does not move the fabric forward or backward,if this is so try to run machine w/o the fabric check if feed dog move on cycle,the teeth should be moving upward and downward rotation pushing action on your fabric,the teeth should come out to the plate slot of feed dog.if not adjust upward, and adjust also the presser foot of needle.if your feed dog is not moving when machine running,thre is a mechanical disengage or loosen in shuttle assymble and feeder dog mechanism they link together ubder the machine,as the shuttle move on one stroke the feeder also move also with the needle.Chesk the adjustment and link mechanism.in addition to this try to clean feed dogs by brush chips thread and fabrics sometimes stored on mechanism of feed dogs and shuttle.
Remove the needleplate and clean between the teeth of the feeddogs.
Ensure the feeddogs are not lowered for free motion sewing.
Don't know the make/model to be any more specific, so post back here or to the Contact Us page at
www.bargainbox.com.au if there is more to do.
Sounds like the timing is off, have to take foot off, take plate off, put it in the zz position and using the hand wheel turn(with new needle in) and see where it is hitting feed dog, loosening the screws to the feed dog and moving it in the opposite direction out of the way so as not to hit. let me know how that works
When this happens it is because the thread tension was not right so it gets stuck under the bobbin case and the feed dogs. Use a bigger lint brush and take out the bobbin casing and clean out the shuttle. When you rethread pull slightly on the thread before you feed it through the needle. This will make sure the thread is properly in the tension discs.
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