B Timing Between The Rotating Hook Motion And The Needle Motion - Mitsubishi Electric LU2-4410-B1T-CS Instruction Manual

HOW TO USE
B Timing between the rotating
hook motion and the needle
motion
In case of double-needle, adjust right and left
timing in the same way at the same time.
Note: If you remove the presser foot, the throat
plate, and the feed dog, it makes easier to
adjust.
( 1 ) Set feed length to 6mm.
( 2 ) Loosen two screws Ⓐ , and remove the link.
( 3 ) Loosen all screws Ⓑ , Ⓒ , Ⓓ .
Note: Be careful not to disengage the large
gear and the small gear.
( 4 ) Lift the needle bar 2.4mm from the lowest
position. Refer to timing marks shown in the
figure.
( 5 ) Slide the hook saddle right and left so that
the gap between the tip of the hook and the
scarf of the needle is 0.05mm or lower.
( 6 ) Tighten screws Ⓑ , Ⓒ .
Note: Be careful not to overtighten screws Ⓒ .
( 7 ) Slide the large gear right and left so that the
tip of the hook position is in the center of the
needle and tighten screws Ⓓ .
Note: Check the large gear and the hook
saddle isn't in contact and its distance is
less than 3mm.
( 8 ) Move the tip of the hook to the needle side
by turning the pulley.
( 9 ) Install the link with the screws Ⓐ as before.
(10) Return the machine head to the original
position and adjust the needle guide position
so that it come lightly in contact with the
needle.
Screw Ⓐ
(a) Position of the needle bar:
The lowest position
0.05mm or lower
0.05mm
— 8 —
Screw Ⓑ
Set Screw Ⓓ
Screw Ⓒ
(b) Position of the needle bar:
2.4mm lifted position from (a)
Tip of
the hook
Link