27
The needle thread is not
cut.
The bobbin thread is not
cut.
The thread slips out the
needle eye when starting
sewing.
The needle thread bunches
up on the wrong side of the
fabric at the beginning of
the seam.
The tail of the needle thread
appears on the right side of
the fabric.
Skipped stitches at the
beginning of the seam due
to a too short tail of the
thread after thread cutting.
The static cutter is dull.
The static cutter blade is
out of position.
Skipped stitch before
thread cutting.
The thread cutter blade is
out of position.
The thread guide plate is
out of position.
The proper hook is not used.
The needle to cutter cam
timing is too late.
The thread drawing lever is
out of position.
A too long tail of the needle
thread is left after thread
cutting.
The pretention is too loose.
The needle to cutter cam
timing is too late.
The static cutter blade is
out of position.
The auto tension release is
not enough.
The needle to cutter cam
timing is too early.
The thread drawing lever is
out of position.
The static cutter blade is
out of position.
Replace or grind the static cutter blade.
Adjust the position of the static cutter blade (see page
21).
Reset the needle at the proper angle.
Reduce the check spring stroke (see page 11).
Adjust the needle to hook timing (see page 6).
Adjust the stroke of the thread cutter blade (see page 22).
Adjust the position of the thread guide plate (see page
23).
Use the proper hook.
Adjust the needle to cutter cam timing (see page 24).
Adjust the thread drawing lever position (see page 25).
Adjust the needle to cutter cam timing (see page 24).
Adjust the position of the static cutter blade (see page
21).
Tighten the pretension.
Adjust the needle to cutter cam timing (see page 24).
Adjust the position of the static cutter blade (see page
21).
Adjust the auto tension release (see page 26).
Adjust the needle to cutter cam timing (see page 24).
Adjust the thread drawing lever position (see page 25).
Adjust the static cutter blade position (see page 21).
Thread Cutter Troubleshooting (1600P and 1600P-DBX only)