The sewing method can be alternated between stretch stitching and shirr stitching with the simple operation of a lever. This lever is also used to adjust the differential-feed ratio.

A gathering attachment (S060), intermittent gathering attachment (S061) and partial shirring device (PF5) are optionally available to enable the machine to perform consistent gathering and partial shirring. Replaceable gauges such as the gauge for light-weight materials and the urethane feed dog are prepared in accordance with the applications of the machine.

The machine comes with a thread spreading mechanism and an adjustable needle guard to prevent stitch skipping. The thread clamp mechanism, tension release mechanism and needle thread draw-out mechanism enable the machine to leave thread of a uniform length after thread trimming, and prevent slip-off of the needle thread. All of these mechanisms contribute to upgraded sewing.

Safety stitching (condensation stitching) the perfect method of preventing loose stitches, or reverse feed stitching (back-tacking) can be alternated through the simple adjustment of the stopper of the reverse feed lever. Either sewing method can be used.

Provided with a sliding presser foot and a silicone oil lubricating unit as standard, stitch skipping and puckering are prevented. Furthermore, the silicone oil lubricating unit prevents the needle from overheating, and allows foundation yarn or synthetic thread to be used without breakage during sewing. These features assure beautifully finished seams with consistency for light- to medium-weight materials.