Is the top thread on the machine correctly threaded? Do you have the bobbin thread installed correctly? The thread pulls off the bobbin to the left side. If you put it in backward the bobbin thread won't get picked up. You also need to get the bobbin thread under the spring steel tension on the side of the bobbin case. Are you threading the needle from left to right? Does the thread go through the thread guide just above the needle at the bottom of the needle bar?
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