B
Timing between the rotating
hook motion and the needle
motion
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 4.5 mm.
( 2 ) Loosen two screws Ⓐ, and remove the link.
( 3 ) Loosen all screws Ⓑ, Ⓒ, Ⓓ, Ⓔ, and slide each
hook saddle to outside.
Note: At this time, don’t loosen the set screw
Ⓓ too much.
( 4 ) Check that the first screw of the large gear
enters a notch, and set the needle bar at the
lowest position.
( 5 ) Slide the large gear to the hook saddle and
mesh with the small gear. At this time, adjust
it so that one of three set screws Ⓔ faces
upward.
( 6 ) Lift the needle bar 2.4 mm from the lowest
position, and adjust the saddle hook position
so that the gap between the tip of the hook
and the scarf of the needle is 0.05 mm or
lower.
( 7 ) Tighten screws Ⓑ, Ⓒ.
Note: Be careful not to overtighten screws Ⓒ.
( 8 ) Have a small gap between the large gear and
the saddle hook, and tighten all set screws Ⓓ.
( 9 ) Lift the needle bar 2.4 mm from the lowest
position again, and adjust the tip of the hook
position so that it is in the center of the needle.
(10) While checking that the tip of the hook is
in the center of the needle, and tighten set
screws Ⓔ.
Note: Tighten each screw Ⓔ little by little.
(11) Install the link with the screws Ⓐ as before.
(12) Return the machine head to the original
position and adjust the needle guide position
so that it come lightly in contact with the
needle.
HOW TO USE
Tip of the hook
0.05 mm or lower
0.05 mm
Screw Ⓑ
Screw Ⓒ
Set screw Ⓓ
Small gear
Large gear
Set Screw Ⓔ
Figure seen from
the arrow direction
Screw Ⓐ
Link
— 9 —
Summary of Contents for LT2-2250-B1T
Page 28: ...Printed in Japan ...
