Abstract: A new and improved portable zigzag straight stitch walking foot sewing machine comprising a longer needle stroke, a larger presser foot having a radiused bottom, a throat plate having a larger opening therein, an inner presser foot having a relatively high lift permitting the easy insertion or removal of fabric which a new and improved spring loaded connecting rod that operates to prevent the fabric from being drawn into the presser foot opening and feed mechanism. In a specific embodiment, the new and improved portable zigzag straight stitch walking foot sewing machine includes a new and improved throw mechanism which is not biased and a retro fix stop device for reproducibly controlling the stitch length.