Mitsubishi Electric LU2-4710-B1T Instruction Manual page 13

HOW TO USE
2 . To change the balance of the alternating movements
between the outside presser foot and inside presser foot
( 1 ) For example, to increase the rise of the inside
presser foot, and decrease the rise of the
outside presser foot.
① R emove the rubber plug located on the top
cover.
② T urn the pulley until the outside presser foot
is slightly raised from the throat plate.
③ L oosen the set screw Ⓐ located on the feed
lifting rock shaft crank (right).
④ T he built-in spring pulls down the outside
presser foot until it makes contact with the
throat plate. Then, tighten the set screw Ⓐ.
⑤ T his completes the adjustment, i.e., the
protrusion of the outside presser foot has
been decreased by a set distance. And, the
vertical motion of the inside presser foot has
been increased by that same distance.
( 2 ) As a contrary case ( 1 ) , to decrease the rise
of the inside presser foot, and increase the
rise of the outside presser foot.
First, turn the pulley until the inside presser
foot is slightly raised from the throat plate.
Next, loosen the screw Ⓐ. Finally, tighten the
screw Ⓐ again.
This decreases the rise of the inside presser
foot.
3 . How to install the upper eccentric feed lifting 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, remove the rubber plug
located on the arm. Locate the second screw
Ⓐ in the upper eccentric feed lifting cam as
shown in the figure. And tighten it.
Outside presser foot
Rubber plug
— 10 —
Inside presser foot
2.0 to 6.0 mm
Ⓐ
Feed lifting rock
shaft crank (right)
Second screw Ⓐ
Upper eccentric feed lifting cam
First screw