JUKI MO-6700D Series, Руководство пользователя

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Trouble Case (1) Case (2) Check and Corrective measures Page
20. Uneven material feed Presser foot pressure The presser foot pressure is too high. Reduce the presser foot pressure except for
the uneven material feed due to puckering.
Presser foot The hinge is too stiff. Remove the stiffness provided no hinge play
is produced.
Scratches on or defective finish on the Buff the presser foot sole for good surface
presserfoot sole produce friction between finish.
the presser foot and materials.
Tilt of feed dogs The front is too high. Make the front down. However, be sure to align
the differential feed dog with the main feed dog.
Height of feed dogs A different in level exists between the main Eliminate the difference in level.
feed dog and differential feed dog.
Adjustment of differential feed The differential feed has been improperly Provide differential feed suited to the material.
adjusted.
21. Puckering Needle The needle is too thick. Use a thin needle as much as possible.
Thread The thread used is too thick. Use a thin needle as much as possible.
Thread tension Both the needle thread and looper thread Reduce the both thread tensions to a minimum.
tensions are too high.
Throat plate The throat plate has a large needle hole. Replace the throat plate with one with a small
needle hole.
Thread cam timing The thread cam timing is too late Advance the cam timing. Refer to the related
Standard Adjustment.
Feed dogs The leading edge of the feed dog teeth Replace the feed dog.
has been rounded off.
A difference in level exists between the Eliminate such difference in level.
main feed dog and differential feed dog.
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(Mainly concerned with double chain
stitch)
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