Question about Juki MO-644D Mechanical Sewing Machine
Style MO-320, if I try to turn the wheel then put presser forward on pedal to run, the power cut off right away, the circus switch at main board also turn off. please show me how ? or the computer control box broken need to replace, it's cost heap.
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Posted on Jan 02, 2017
Have you tried sending information to a Juki dealer? It's unfortunate/fortunate you can find some manuals online and have to pay but...
Posted on Jan 14, 2009
upper tension sets the lower thread tension (upper thread is what you see on the underside of the fabric). Bobbin tension is for the thread you see on the top of the fabric
Posted on Jul 08, 2009
Your bobbin case may be too tight. Try loosing it by turning the small screw a little turn to the left. If thats not it, you could also have a bend or snag in the bobbin case that is snapping the thread. If this is the case you will need to replace it.
Posted on Apr 21, 2010
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