text: [{"text_idx": "#000000", "text": "3. Left needle thread tension dial (yellow)"}, {"text_idx": "#000001", "text": "4. Right needle thread tension dial (blue)"}, {"text_idx": "#000002", "text": "5. Upper looper thread tension dial (red)"}, {"text_idx": "#000003", "text": "6. Lower looper thread tension dial (green)"}, {"text_idx": "#000005", "text": "17. Stitch length dial (SL)"}]