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Stitch skipping Clearance between the Check the clearance. Refer to “(7) Needle-to-hook
needle and the blade timing”.
point of hook is too large.
Needle-to-hook timing is Check the specified Refer to “(7) Needle-to-hook
excessively advanced or dimension. timing”.
retarded.
Presser foot is rising. Check the pressure Tighten the presser spring
of the presser foot. regulator.
Height of the needle bar Check the lowest point Refer to “(7) Needle-to-hook
is improper. of the needle bar. timing”.
Blade point of the hook Check the blade point Correct the blade point of the
is blunt. of the hook. hook or replace the hook.
Improper type of needle Replace the needle with one
is used. which is thicker than the current
needle by one count.
Hook needle guard is not Check the functional Refer to “(7) Needle-to-hook
functioned. amount of the needle timing”.
guard.
Thread take-up spring Decrease the tension of the
excessively works or the thread take-up spring and
stroke of the spring is too increase the stroke of the spring.
small.
Feed timing is not proper. Refer to “(9) Feed cam timing”.
Needle thread tension is Adjust the needle thread tension.
too high.
2
Troubles Causes Checking Corrective measures
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