Joe: Mine says for 301. There is an adjustment on the side(A) for the width and the stitch regulator is for closeness of stitch. Lever B is for the zigzag. AND of course you know not to lower the feed dogs. Don't know if I'm explaining this right. I have included the instructions for mine. Hope you can read. Once you get that thing going, you will really like the stitches you can get out of it.
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