Texi Fox 25
12
MECHANICAL ADJUSTMENT
CLEARANCE BETWEEN NEEDLE AND HOOK
(ADJUSTMENT METHOD NO.2)
TO CHECK:
Use this adjustment method NO. 2 if the clearance cannot be adjusted by the
method NO.1.
The clearance between the needle and shuttle race should be 0~0.1 mm.
If it is not within the above limit, adjust as follows:
ADJUSTMENT PROCEDURE :
1. Set the pattern selector dial at "B" (
).
2. Remove all covers (See page 2-5) and remove the shuttle and the shuttle race
cover.
3. Loosen the setscrew (A) on the lower shaft bushing and slide the gear about
0.5 mm to the right to create some slack between the ge
ars.
4. Lower the needle and loosen the two shuttle race setscrews (B).
Move the shuttle race unit axially either forward or backward to adjust the
clearance between the needle and the shuttle race in the range of 0~0.1 mm.
5. Set the pattern select dial at "C " (
), turn the handwheel to check if the
clearance between the needle and inner edges of the shuttle race spring at the
left and right needle drops are equal.
If not, adjust by turning the shuttle race unit.
6. Tighten the two shuttle race setscrews (B).
7. Loosen the setscrew on the lower shaft bushing and slide the gear back to the
original positi
on while adjusting the backlash.
8. Tighten screw (A) firmly.
9. Attach all the covers.
NOTE: The rotary play of the tip of the shuttle driver should be less than 0.3
mm and the lower shaft should turn smoothly.
After the adjustment, check the hook timing.
0~0.1mm
pic.1
Clearance should be equal
Needle position
Shuttle race
cover
pic.3
A
Lower shaft bushing (front)
Shuttle
race setscrews (B)
(2 pcs.)
pic.2
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