Toyota ESP9000, Service Manual

Page: 57 / 111

3.ADJUSTMENT
3. ADJUSTMENT
3-1 Timing of needle and rotary
hook
1.Needle lift (rotary hook position) and
clearance between needle and rotary
hook
[Inspection]
(1) Remove the table set.
(2) Remove the needle plate.
(3) Turn DS1-1 on and turn the power on.
(4) Press SET key from test mode of LCD
display, select No.2 and press SET
key.
(5) Rotate the hand wheel anti-clockwise
to move the needle bar to the bottom
dead center (180°). Rotate the hand
wheel further, and when LCD display
shows the needle position at 201°±
3
°
(Standard 1.8 to 3.1mm), the hook tip
must be aligned with the needle
center (Fig.1).
(6) The clearance between the needle and
the hook tip must be 0.1 to 0.3mm
(Fig.3).
[Adjustment]
(1) Slightly loosen the rotary hook set screw
(a) closest to the hook tip and loosen the
other two set screws (Fig.2).
(2) Rotate the hand wheel anti-clockwise to
move the needle bar to the bottom dead
center (180°). Rotate the hand wheel
further until LCD display shows the
needle position at 201°±3°(Fig.1).
(3) Loosen set screw (a) further and rotate
the rotary hook in either direction A or B.
Align the hook tip with the needle center
(Fig.1) and secure a clearance of 0.1 to
0.3mm between the needle and hook tip
(Fig.3).
(4) Slightly tighten the set screw (a) closest to
the hook tip (Fig.2).
(5) Rotate the hand wheel anti-clockwise
again until LCD display shows the
needle position at 201°±3°and check
the position of the needle and hook
tip.
(6) Firmly tighten the three retaining screws
(a) (Fig.2).
(7) Mount the needle plate, the hook cover
and the table set.
Needle bar
Needle
Hook tip
201
°±
3
°
(Standard; 1.8 - 3.1mm)
FIG.1
-21-