Hand Lifter; Adjusting The Presser Foot Pressure (Upper Feed Roller) And The Height Of The Presser Foot (Upper Feed Roller) - JUKI DLN-6390 Instruction Manual

6. Hand lifter

❶
A
7. Adjusting the presser foot pressure (upper feed roller) and
the height of the presser foot (upper feed roller)
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.
Adjusting the presser foot pressure
B A
❷
Adjusting the height of the upper feed roller
❷
Adjustment of the height of upper feed roller ❶ can be performed by adjusting the position of screw ❷ (in case of
6390-7) or presser lifter stopper screw ❸ (in case of 6390). (Adjusting value at the time of delivery : 13 mm)
＊ Adjust the lifting amount of upper feed roller ❶ within the range of 14 mm or less.
1) Turn presser lifting lever ❶ in the direction of A to stop
2) The presser foot goes up approximately 4.5 mm and
B
1) Loosen nut ❷ . As you turn presser spring regulator ❶
❶
2) As you turn the presser spring regulator counter-clock-
3) After adjustment, tighten nut ❷ .
4) The standard height of the presser spring regulator is
– 31 –
the presser foot at the position where it is lifted.
stops.
It returns to the home position by lowering the presser
lifting lever in the direction of B.
clockwise (in direction A), the presser foot pressure
will be increased.
wise (in direction B), the pressure will be decreased.
29 to 32 mm. (Top end of nut ❷ aligns with scale "2"
of presser spring regulator ❶ .)
❸
❶