Operation Of The Sewing Machine; Pedal Operation; Hand Lifter - JUKI LH-3500A Series Instruction Manual

5. OPERATION OF THE SEWING MACHINE

5-1. Pedal Operation

* When auto-lifter (AK135) is used, 1-step switch is increased between stop and thread trimming. The
presser foot goes up when the back part of the pedal is lightly depressed D, and the presser foot comes
down once when the back part of the pedal is further strongly depressed.
Then the thread trimmer is actuated and the presser foot goes up again.
• If you reset the pedal to its neutral position during the automatic reverse feed stitching at seam start, the
machine stops after it cornpletes the reverse feed stitching.
• The machine will perform normal thread trimming even if you depress the back part of the pedal immedi-
ately following high or low speed sewing.
• The machine will completely perforrn thread trimming even if you reset the pedal to its neutral position
immediately after the machine started thread trimming action.

5-2. Hand lifter

A
B
C
D
E
❶
To turn
– 30 –
[The pedal is operated in the following four
steps: ]
1) The machine runs at low sewing speed when
you lightly depress the front part of the pedal. B
2) The machine runs at high sewing speed when
you further depress the front part of the pedal. A
(If the automatic reverse feed stitehing has been
preset, the machine runs at high speed after it
completes reverse feed stitching.)
3) The machine stops (with its needle up or down)
when you reset the pedal toits original position.
C
4) The machine trims threads when you fully de-
press the back part of the pedal. E
1) When you want to keep the presser foot in the
lifted position, turn hand lifter ❶ in the direction
of the arrow. By so doing, the presser foot rise 7
mm.
2) When you want to lower the presser foot, lower
the hand lifter. This will return the presser foot to
its predeterminded lower position.
3) Operate the knee lifter, and the presser will rise
by approximately 13 mm.
Never perform thread trimming operation
with the presser foot lifted since there is
a case where the wiper comes in contact
with the presser foot and the needle may
be broken when the sewing machine is
operated with the presser foot lifted.