Material will not feed across

This machine has a pressure regulator on the left side.You should look to see that it is not loosened. When you lift up on the presser foot it should have resistance.
Then look at the feed dogs to see that they are moving, Set the stitch length at 4 and turn the hand wheel. The teeth should move towards the back of the machine. They should also be slightly above the needle plate as they go back and below the surface of the plate as they come forward.
If they don't rise above the plate , remove the needle plate and clean between the slots of the teeth.
sewman7