Sewing machine is always jumper broken is going on
hook and needle position error is too large Caused by the fault, adjust the position of the hook and the needle can be resolved
ook shuttle tip has a glitch caused by the fault, with a fine sandpaper can easily wipe the burr can be,
pick thread spring tension is too large or no thread caused by fault,
needle bending or needle anti-caused by the failure to replace the new needle or the needle can be installed correctly
Sewing machine jumper generally have such a number of possible
