Upper Threading: Upper threading is very simple and fairly similar for all models of the sewing machines.
Steps for Upper Threading:
To begin with, the take up lever is kept at its highest position.
Place the spool/thread on the spool pin with the right hand and a length of the thread is unwound for top threading.
Pass the thread through a thread guide and then on to the tension disc. Insert the thread properly into the two concave discs and check for the tension. Adjust the tension if too tight by moving the tension screw in an anticlockwise direction.
Pass the thread through the hole in the take-up lever. All the sewing machines require threading through the tension discs before threading the take up lever.
Guide the thread to another thread guide, located near the needle bar, before being passed on through the eye of the needle. It is important to thread the needle from the side on which the last thread guide appears.
Leave at least 3”-4” of thread beyond the eye of the needle to enable under threading.
Under Threading: Every bobbin case has a provision to fit in the bobbin, which is wound with the help of the bobbin winder. Once the bobbin is wound follow the following steps for under threading.
Insert the bobbin into the bobbin case and pull the thread through the slanting slot. Check for the tension of the thread. If it is too tight, the small screw on the case can be loosened. There should be a slight tension and the bobbin should stay firmly in the case and not bob up and down when the thread is pulled.
Leave at least 3”-4” of thread before inserting the bobbin case into the shuttle. Ensure that the bobbin case fits properly into the slot of the shuttle, otherwise it may fall off from the shuttle while stitching.
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