H Adjustment Of Upper Feed Length (Needle Side); I Adjustment Of Forward/Backward Feed Length; J Adjustment Of The Outside Presser Foot And The Inside Presser Foot - Mitsubishi Electric LU2-4400-B0B Instruction Manual

HOW TO USE
H Adjustment of upper feed
length (needle side)
If uneven feeding occurs according to the fabric,
adjust the long hole of the feed rock shaft crank
(right) to adjust the upper feed length.
(How to adjust)
( 1 ) Loosen the special bolt.
( 2 ) Move the special bolt upward to decrease the upper feed.
( 3 ) Move the special bolt downward to increase the upper
feed. (The upper feed and the lower feed theoretically
become equal when the center of the special bolt
matches the reference line of the feed rock shaft crank)
( 4 ) After adjusting, tighten the special bolt.
Note: If the special bolt is overtightened, the link and
the feed rock shaft crank (right) may not work.
I Adjustment of forward/
backward feed length
The forward/backward feed length can be adjusted
by moving the eccentric pin as shown in the figure.
( 1 ) Loosen the reverse stitch shaft crank screw.
( 2 ) To increase forward stitch length, turn the
eccentric pin clockwise.
To increase backward stitch length, turn the
eccentric pin counterclockwise.
Note: Please adjust in the range where the mark
point of the eccentric pin is facing to the
reverse block side as shown in the figure.
J Adjustment of the outside presser
foot and the inside presser foot
1 . Adjustment of working height of the outside
presser foot and the inside presser foot.
Please adjust working height of the presser foot
when sewing the fabric having large elasticity
or varying the thickness of the fabric.
(How to adjust)
( 1 ) Loosen the special bolt.
( 2 ) Working height is the biggest when the
crank rod is moved upward and set.
( 3 ) Working height is the smallest when the
crank rod is moved downward and set.
( 4 ) After adjusting, fully tighten the special bolt.
● W orking height of the presser foot can be
adjusted in the range from 2mm to 6mm.
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
Push button
engaging part
Reverse stitch
shaft crank
Reverse
block
Screw
Eccentric pin
Feed lifting rock shaft crank
Special bolt
Increase
Decrease
— 12 —
Feed rock shaft crank (right)
Upper feed decreases
Link
(Needle bar rock link)
Reference line
Upper feed increases
Special bolt
Backward stitch length increases
Forward stitch length increases
Mark point
Screw Ⓐ
Arm Ⓑ
Crank rod