Clearance Between Needle And Hook (No. 2) - ELNA eXplore 240 Service Manual

MECHANICAL ADJUSTMENT
CLEARANCE BETWEEN NEEDLE AND HOOK (ADJUSTMENT METHOD NO.2)
TO CHECK:
Use this adjustment method no. 2 when method
The clearance between the needle and shuttle race should be –0.05 to +0.10 mm.
ADJUSTMENT PROCEDURE:
1. Set the pattern selector dial at (
2. Remove the rear cover (see page 7) and the shuttle race ring.
3. Loosen the screw (A) on the lower shaft bushing and shift the gear about 0.5 mm to the right to
disengage gears.
Then, tighten the screw temporarily.
4. Lower the needle and loosen the two shuttle race setscrews (B).
Pull up or push down the shuttle race to adjust the clearance between the needle and the shuttle
race in the range of –0.05 to +0.10 mm.
5. Set the pattern selector dial at(
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 set screw on the lower shaft bushing and shift the gear back to the original position
while adjusting the backlash.
8. Tighten screw (A) firmly.
9. Attach the shuttle race ring and rear cover.
NOTE: The rotary play of shuttle driver should be less than 0.3 mm and the lower shaft should
turn smoothly.
After the adjustment, check the hook timing.
Shuttle race
Setscrew b (2 pcs.)
NO.1 cannot be used.
), stitch width dial at ( 0 ).
), stitch width dial at ( 5 ). Turn the handwheel to check if the
Setscrew (A)
–0.05 to +0.10 mm
Lower shaft
Bushing (front)
14
MODEL:eXplore 240
Clearance should be equal
Needle
Shuttle race spring