artisan TORO 4000 Series, Instruction And Spare Parts Manual

Page: 11 / 36

WALKING FOOT HEIGHT ADJUSTMENT 13.
14. ADJUSTING THE NEEDLE-TO-SHUTTLE RELATIONSHIP
To Adjust the height of the walking feet:
1. Loosen
the nut
#
(6) and move the lever
#
(7) up to
Decrease the walking foot height. (B)
2. Move the lever
#
(7) down in slotted bracket
#
(8)
to Increase the walking foot height. (A)
3. Tighten the nut
#
(6) after completing the adjustment.
Normal timing adjustment of the shuttle hook.
1. Turn the handwheel counter-clockwise until the
oscillating shuttle hook is positioned to the fullest
most left position of its travel with the needle at the
“Bottom-Dead-Center” of its travel (fully down).
2. The point of the oscillating shuttle hook
#
(B).
should then be equal to 1 mm with the end of the
steel shuttle hook race
#
(C).
To Adjust the position of the oscillating shuttle hook.
1. Open the front inspection plate cover; located under
the stitch length regulator lever on the front of the
TORO machines’ casting.
2. Insert a 6 mm Allen wrench into the adjusting screw
#
(2) and loosen the screw slightly. It is very T
IGHT
!
3. Fully loosen the Allen screw and rotate the shuttle
hook either clockwise or counter-clockwise to align
the shuttle hook correctly as shown in Fig. 14-1.
4. Remember to firmly tighten the Allen screw
#
(2) when
you have accomplished the adjustment.
To adjust the needle bar height and timing relationship:
1. Set the stitch length lever to the “0” position.
2. Turn the handwheel counter-clockwise until the needle
bar is at its lowest position (bottom-dead-center).
3. Continue turning the handwheel in a counter-clockwise
rotation and raise the needle bar up exactly 4 mm or
approximately 5/32” up from “bottom-dead-center”.
The point of the shuttle hook
#
(3) should exactly
bisect the center of the needle, and be approximately
in the center of the needle, just above the eye of the
needle and at the bottom 1/3 of the needle scarf.
This adjustment is crucial to form a proper stitch.
4. At this point, the bottom of the needle bar should be
exactly 31mm or 1-7/32” above the top surface of the
standard needle plate
#
43337.
11.
See Pages 9 and 10.
Needle Bar Height Setting: 27 mm
Bottom-Dead-Center or Lowest point of Needle Clamp
to the top of the Throat Plate.
B.
C.
D.
Shuttle
Hook
E.
Oscillating
Shuttle Hook
Driver
A.
Thread Cast-off Area.
Front of Machine
Needle End
Right Side
Hand Wheel
4 mm
31 mm
Shuttle Hook
Point
At a 4 mm rise of the
Needle bar from the
lowest position.
Set Hook point to center
of the needle.
Fig. 14-1
Fig. 14-2
Fig. 14-3