Top Loading Bobbin Tension Issue with Zig Zag on bottom and the Solution Using Nylon #69 Thread
At times the auto threading of the top drop in bobbins will not catch the tension bar when you start sewing. This is mostly on heavier threads such as #69 nylon thread for sewing leather of home dec fabrics. In this video I demonstrate how to successfully correct this when the machine fails to properly route the bobbin thread upon starting the stitching process.