2 . Alternating up and down movement.
A good feed condition is attained when the
alternating up and down movement is changed
between the outside presser foot and the inside
presser foot depending on the kind of fabric.
For example)
Reducing the up and down movement of
the outside presser foot and increasing it of
the inside presser foot may be effective for
stitching the slippery fabric.
(How to adjust)
( 1 ) Turn the pulley and stop it at the position
where the thread take-up lever comes to
the lowest.
( 2 ) Down the presser foot.
( 3 ) Loosen the feed lifting rock shaft crank set
screw Ⓐ.
( 4 ) Moving the arm Ⓑ to the left, the up and
down movement of the inside presser foot
increases and it of the outside presser foot
decreases.
( 5 ) In contrast, moving the arm Ⓑ to the right,
the up and down movement of the inside
presser foot decreases and it of the outside
presser foot increases.
( 6 ) After adjusting, fully tighten the screw Ⓐ.
● The up and down movement of the inside
presser foot and it of the outside presser foot
are factory-adjusted to 3mm and 4.2mm.
3 . How to install the eccentric cam
( 1 ) Turn the pulley and stop it at the position
where the thread take-up lever comes to
the lowest.
( 2 ) In this condition, tighten the first screw
Ⓒ of the eccentric cam so that it is faced
abeam as shown in the figure.
4 . Fine adjustment of the eccentric cam
Remove the rubber plug is located in the front
of the arm.
The eccentric cam can be finely adjusted
through this hole.
HOW TO USE
Eccentric cam
First screw Ⓒ
Arm Ⓑ
Second screw
Crank rod
Feed lifting rock shaft crank
〈Equality up and down movement〉
〈Inequality up and down movement〉
Equality
(High)
Height of the
inside presser foot
Height of the
outside presser foot
(Low)
Rubber plug
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