Mitsubishi LT2-230 User Manual

OPERATION
12 Timing between rotatinq hook motion
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(DSet stitch length to on the stitch
length setting dial.
(2) When needle is lifted 2.2 mm from the lowest
position, as shown the following positional
relationship should be maintained.
—The upper edge of needle eye should be
1.6 mm below the hook point.
—The hook point should be located at the
center of needle axis.
—Gap between the hook point and the side
face of needle should be 0.05mm.
(3) Needle/rotating hook position can be ad
justed as follows.
(For easy adjustment, it is recommended
that the presser foot, throat plate and feed
dog assemblies are removed.)
• Position adjustment of hook point
Adjust the hook point so that it comes to the
center of needle axis.
(1) Lean the machine head backward and loosen
three set screws of hook shaft gear (small).
(2) Turn the balance wheel and stop when the
needle is lifted 2.2 mm from the lowest
position.
(3) Rotate the hook by hand to position the
hook point to the center of needle axis.
(4) Move the hook bracket leftward or right-
ward and position it so that gap between the
hook point and side face of needle is 0.05
mm. For this adjustment, each screws A,B
and two of C should be loosened.
Note: In the adjustment, do not excessively
loosen set screws C and always maintain mesh
ing of hook shaft gear and lower shaft gear.
(5) Tighten the set screws in the following order:
(l) While pressing the lowershaftgear (large)
against the side face of hook bracket,
tighten the set screws C first.
After checking gap between the needle
and the hook, tighten the set screws A.
Q) Then tighten theset screws B.
9 -
Gap between hook point
and upper edge of needle eye
Needle lift:
2.2 mm from
needle lowest ^
position
Center of
needle axis
Hook point
Set screw of hook
shaft gear (small)
0)
Set screw (A)
Set screw
0.05mm
Set screw of lower
shaft gear (large)
Set screw (A)
screw
Set screw (B)
From the library of: Superior Sewing Machine & Supply LLC

Mitsubishi LT2-230 Specifications

General

Brand	Mitsubishi
Model	LT2-230
Category	Sewing Machine
Language	English