There is a marker line on the surface of cam .
Adjust so that marker line A on the cam and end face B of motor xing plate ❾ are collinear to each other.
* Do not disassemble the cam and the motor since their origin positions have been factory-
adjusted appropriately at the time of delivery.
Securely tighten three presser motor asm. setscrews while bringing cam roller and cam into light con-
tact with each other.
❾
B
A
Collinear
❾
Light-contact state
(7) Various origin adjustments
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
Standard adjustment
2) Adjustment of the origin of a presser lifter motor
If the cam roller is
raised, the problem that
the presser foot sole
fails to come in contact
with the throat plate can
occur.
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