Adjusting The Pressure Of The Presser Foot; Adjusting The Height Of The Presser Bar; Adjusting The Micro-Lifting Mechanism Of The Presser Foot - JUKI LZ-2280A Series Instruction Manual

4-3. Adjusting the pressure of the presser foot

WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
B
C
❷

4-4. Adjusting the height of the presser bar

WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
❶

4-5. Adjusting the micro-lifting mechanism of the presser foot

WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
A
❶
D
❷
❸
A
B
❶
❷
– 14 –
Turn the presser spring regulator ❶ clockwise A
1)
to increase the pressure given by the presser foot.
2) Turn the presser spring regulator counterclock-
wise B to decrease it.
* Height C of the presser spring regulator ❶
can be measured by reading the scale mark
of presser spring regulator ❶ on top surface
D of nut ❷. Use the measurement for the
management of sewing processes, etc.
1) Adjust the height of the needle bar by loosening
presser bar bracket setscrew ❶ when adjustment
is necessary.
2) After the adjustment, securely tighten the screw.
In order to prevent the needle breakage due
to interference between the needle and the
presser foot, adjust so that the clearance
between needle hole ❷ in the presser foot
and needle hole ❸ in the throat plate is
equal at both sides (A = B). Then, tighten
setscrew ❶.
Some type of material needs to be sewn with the
presser foot slightly lifted.
In this case, perform this adjustment following the
procedure described below.
Loosen nut ❷. Turn the micro-lifter floating amount
1)
by turning the micro-lifter floating screw ❶.
Turn presser foot floating screw ❶ clockwise until
2)
the presser foot goes up by the required amount.
Then, tighten nut ❷ to fix the presser foot.
If you do not use the micro-lifting mech-
anism of the presser foot, fully return the
presser foot micro-lifting screw ❶ to its
home position. The standard of lifting
amount of the presser foot is as thick as a
sheet of paper.