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10. Even when the sewing machine is
10-1) The needle thread is not
Pass the needle thread.
started, it goes to stop soon.
hooked.
10-2) Position of the thread breakage
Adjust the position of the thread breakage detecting
detecting plate is wrong.
plate.
11. Even though the needle thread is
11-1) Position of the thread
Adjust the position of the thread breakage detecting
broken, the sewing machine does
breakage detecting plate is
plate.
not stop.
wrong.
12. Wiper cannot spread a thread
12-1) Interference between wiper
1-A) Wiper mounting position is
Adjust the wiper position.
and needle
inadequate.
12-2) Interference between wiper
2-A) Inadequate adjustment of the
Adjust the height of the intermediate presser.
and intermediate presser
height of the intermediate
presser
2-B) Wiper mounting position is
Adjust the wiper position.
inadequate.
12-3) There is no clearance between
3-A) The cloth thickness permitting
Use the lower wipe-out sequence.
the needle and intermediate
the use of a wiper is exceeded.
presser to pass the wiper.
12-4) The wiper does not move
4-A) The wiper switch is turned
Turn the wiper switch ON.
after thread trimming.
OFF.
13. Severe vibration
13-1) Position of the crank balancer
Define the correct crank balancer position.
is wrong.
Trouble
Cause (1)
Cause (2)
Check and corrective measures