The Sonata 6610 sewing machine was produced by Singer Sewing Machine Company. The sewing machine featured ten different stitching types including a zig-zag stitch for mending and buttonholes and a flexi stich pattern for stretchy materials. The Sonata 6610 comes with a variety of mechanisms for tangle-free easy threading.
Raise the presser foot to its highest position. Rotate the hand wheel on the side of the machine to raise the needle to its highest position.
Push the slide plate to the side to reveal the bobbin compartment. If there is a bobbin in place, remove it.
Prepare the wound bobbin by unspooling 4 inches of thread. Insert the bobbin into the machine.
Locate the two notches on the edge of the bobbin indent. Guide the bobbin thread into the right notch and around through the left notch.
Draw the thread across the bobbin to the rear of the sewing machine and close the slide plate.
Turn the thread wheel until the take-up lever reaches its highest position. The take-up lever is the protruding metal piece above the thread tension dial.
Slide a spool of thread onto the spool pin at the top-right of the machine. Slide the spool cap over the end of the thread spool to secure it in place and protect the machine from tangling.
Extend thread from the spool and guide the thread into the two thread guides along the top of the machine. The thread should be pushed down into the triangular guide and pulled into the looped metal of the second guide.
Guide the thread down to the thread tension dials. Keep the thread on top of the tab on the right side of the dial, and loop around the thread tension dials clockwise. Hook the thread behind the thread guide directly above the thread tension dials.
Lead the thread up to the take-up lever and hook the thread into the opening.
Pass the thread through the two spiraled thread guides above the needle. Guide the thread through the eye of the needle and pull at least 4 inches of thread towards the back of the machine.
Lower the presser foot. While holding the needle thread, turn the hand wheel to lower the needle. Continue turning to raise the needle and bobbin thread up through the needle plate. Pull the bobbin thread loop to find the loose end and match it with the needle thread.
If you choose to use a medium or heavy thread, do not thread the last spiral thread guide.