Brother HE-800C - Upper Thread Run out

HE-800C
11. TROUBLESHOOTING
86
11-13. Upper thread run out
Items with a “*” in the “Page” column should only be handled by a qualified technician.
Cause Check Remedy Page
Upper thread trimmer
assembly
Installation position of
upper thread trimmer
assembly
Adjust the installation position of upper thread trimmer
assembly by moving the setting plate assembly.
・ Upper thread trimmer longitudinal position
adjustment
・Upper thread trimmer cutting depth adjustment
*
Upper thread trimmer
assembly holding force
Adjust so that the thread does not come out when you
cut it with trimmer and hold the end of the thread
between your fingers and gently swing the assembly.
・Bend the trimmer U or replace them so that the
correct force is applied.
・Repair any damage from striking the needle.
*
Opening cam position Adjust the position so that the trimmer does not touch
the opening cam when the work clamp is lowered.
70*
(Continued on next page)
4006Q
4005Q
4107M
Approx. 0.5 mm
Cotton yarn #60
Holding force approx. 2N