The fabric doesn't move forward.

CHECK FOR RUST AND THREAD REMANENTS

The needle never moves forward/back on its own for most sewing machines. The needle bar goes up and down. The fabric moves due to the action of the feed dogs. First remove the fabric from under the presser foot. Check for tangled thread wrapped around the feed dogs or fabric/thread going down into the bobbin area in a tangle. Next check if the feed dogs are up. (When the feed dogs are down or covered (on some machines), the machine is in darning mode. The fabric will only move if you move it yourself.) With the fabric out of the way, rotate the hand wheel and check if the feed dogs are moving. Open up the bobbin compartment and clean out any lint, thread or other debris that may be tangling the mechanism. Take off the throat plate and check the feed dogs. A damaged throat plate can stop the feed dogs from moving properly. You may need to replace the throat plate.

For some machines, you may need to make sure that the unit is not in bobbin wind mode. This is usually obvious since the needle bar won't move either.

I hope this helps.

Cindy Wells

Have you got a tangle under your fabric? If so, release the fabric and rethread your machine, making sure the foot is up during threading. Otherwise check the feed dog under the foot. There's usually a switch somewhere that brings the feed dog up or down. If it's down the fabric won't feed. Another point, what type of fabric are you sewing. If it's leather or leatherette you'll need to use a roller foot. Hope this helps.

it is possible that you have the feed in the neutral position ( halfway between forward and reverse ) from your problem discriotion

You need a fatter needle. The skinny needle will not open the leather enough for a smooth flow of thread and that's why the bobbin is bunching up when the top thread is sticking. Make it easier on your machine by using an appropriate size needle while sewing leather.

check the feed dogs in the needle plate area to see if there up,
if you can see them & touch them with your finger, I'm putting in a link
for a free manual, so you can see where the lever is to the feed dogs, just
incase they are not up. if they are up then they may need to be checked
to see why they aren't moving the fabric.
http://www.singerco.com/uploads/download/1199_8770-efs.pdf

Do the feed dogs move up and down? If they dont the plastic gear underenth has probably broken you can take this to a singer dealer and have them replace the plastic gear with a nylon one which would last longer than that did

The thread is caught in the hook...Remove the upper thread and bobbin case, turn the hand wheel backwards and forwards by hand and remove the thread remands. Good Luck

Hi,

What is the length set at?

Are the feed dogs visible at the needle plate?

What does the design look like in the pattern box?

Have you tried it on the straight stitch to see if is effected also?

Bonnie

in can not re thread my bobbins what do i do