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8. The intermediate presser does not
8-1) There are some inadequate
Check for the inadequate fitting and rattling conditions
work during sewing.
fitting conditions in the inter-
in the link mechanism.
mediate presser link mechanism.
Examine the positions for greasing.
8-2) Intermediate presser variable
Intermediate presser variable adjustments.
is maladjusted.
8-3) Intermediate presser pulse
3-A) Intermediate presser pulse
Replace the intermediate presser pulse motor.
motor malfunction
motor is out of order.
3-B) Connection of intermediate
Check the connector connections.
presser pulse motor is improper.
8-4) Defective board
4-A) The board is out of order.
Replace the board.
4-B) Connector connections are
Check the connector connections.
improper.
8-5) The intermediate presser
Adjust the intermediate presser variable stroke.
stroke has decreased to 0mm.
9. Unusual sound is generated from
9-1) The clearance is too much
Adjust the clearance between the inner hook and the
the face section.
between the inner hook and
driver.
the driver.
9-2) The intermediate presser bar
Adjust the intermediate presser adjusting arm.
connection comes in contact
with the lower metal of the
intermediate presser needle bar.
9-3) The intermediate presser comes
3-A) Inadequate adjustment of the
Adjust the height of the intermediate presser.
in contact with the throat plate.
height of the intermediate presser
9-4) The intermediate presser comes
Adjust the presser.
in contact with the cloth presser.
9-5) Intermediate presser variable
Intermediate presser variable adjustments.
is maladjusted.
9-6) Intermediate presser pulse
6-A) Intermediate presser pulse
Replace the intermediate presser pulse motor.
motor malfunction
motor is out of order.
6-B) Connection of intermediate
Check the connector connections.
presser pulse motor is improper.
9-7) Defective board
7-A) The board is out of order.
Replace the board.
7-B) Connector connections are
Check the connector connections.
improper.
Trouble
Cause (1)
Cause (2)
Check and corrective measures