Jack A~4 single needle lock stitch sewing machine troubleshooting (solved)#32

Jack A-4 single needle lock stitch sewing machine troubleshooting solved. Main problem is the thread tension not open when the presser foot up. Thank you so much for watching . I hope this video can to the other please like and share. MARAMING SALAMAT PO. Stay safe everyone bye… bye… see you on my next upload mga KASEWER.