This seemed to throw off the timing, as … Loosen the thumb screw on the left side of the sewing machine body and remove the cover to expose the needle bar. First, you have to make sure the needle bar is the correct height. I recently purchased an experienced Juki LU 563. As I have been acquainting myself with the machine, it has been working very well. Usually the needle bars have about 3 timing marks. Disconnect the sewing machine from any power source. When the bobbin or needle gets pulled out of timing with the rest of the tool, the machine is useless and becomes a danger when the needle breaks. For example, changing the interval can create a … From this parameter are depended appearance of many defects such as skipping stitches and breakage upper and lower threads, etc. As with all oscillating-shuttle machines, the main timing point is the needlebar. Some machines allow you to set stitch width in smaller intervals. Loosen hinge screw nut 1 in the top feed rod. In this Instructable I will show you how to adjust the bobbin timing on your machine. Before sergers leave the manufacturing facility, the timing is professionally set by technicians. Open the shuttle race and remove the bobbin and bobbin case. The hook tip and a needle's eye on industrial sewing machine must be adjusted in time. If you haven’t cleaned your sewing machine in a long time, things like lint and thread ends may have found their way into different parts of the machine such as the area under the throat plate, between the tension discs, or anywhere around the bobbin and bobbin case.. The more adjustments that are available, the more control you will have over stitch placement. The majority of sewing machines allow you to adjust the needle position to be left, right, or center. Once the needlebar is properly set, only minor adjustments are necessary to have a smooth-running sewing machine. This is the shaft that extends down and that you attach a needle to for sewing. How to Adjust Timing on Industrial Sewing Machine. Fixing the timing on a sewing machine is an easy step by step process to make sure that you don’t have to replace your sewing machine or pay for costly repairs from a sewing repairman. While we recommend checking your warranty and owner’s manual before proceeding, there are many benefits for taking the time to service your own sewing machine. Thick fabrics, needle jams and thread debris can also cause a serger to have timing issues. Howdy! The 31-15 sewing machine is the simplest sewing machine in the parachute loft. Sewing machines are surprisingly delicate pieces of machinery. Page 15 Adjustment Procedures Results of Improper Adjustment 1) Amount of alternate vertical movement Increase the vertical stroke of the ™ In case of the machine without the thread trimmer walking foot in accordance with the 1. Yesterday, as I was sewing some canvas and leather, the needle broke. sewing products. TIMING AND ADJUSTMENTS . Over time, a serger can lose its timing, causing the needle to skip stitches, break and possibly bump other parts of the machine. Cleaning the machine. Not sure what all 3 are for, some have different purposes such has signifiing needle bar height then the stroke is at top dead center (this is the purpose you need it for), when the hook comes into the scarf, or different needle lengths.