16
TO ADJUST THE CLEARANCE BETWEEN NEEDLE
AND LOWER LOOPER / NEEDLE GUARDS
Correct Setting:
When using A #11 needle, when the tip of the lower looper comes from the left just behind the needle on the
left or right, the clearance between both needles and the lower looper should be 0 to 0.05 mm, for A #14
needle, the clearance should be 0 to 0.05 mm when the needles are pushed slightly by the front needle guard.
In this condition, the clearance between both needles, and the rear needle guard should be 0 to 0.2 mm.
To adjust:
1. Remove the face plate unit, presser foot, needle plate and needles. Insert A #11 needle on the right.
* To replace A needle, loosen the two screws on the needle clamp.
2. Turn the handwheel toward you to bring the tip of the lower looper just behind the needle from the left.
3. Loose the two setscrews A, move front needle guard toward you to get clearance between the front needle
guard and the needle.
4. In this condition, the clearance between the right needle and lower looper should be 0 to 0.05 mm. If not,
loosen hexagon bolt B just enough to move the lower looper driving arm. Move it backward or frontward to
get the proper clearance between lower looper and needle, tighten hexagon bolt B firmly.
5. Insert A #11 needle the left.
6. Turn the balance wheel toward you to bring the tip of the lower looper just behind the needle on the left
from the left.
7. Clearance between left needle and lower looper should be 0 to 0.05 mm. If not, set the needle gauge (787-
G02) as shown. Loosen set screw C and turn the needle bar in direction D or E to get proper clearance
between left needle and lower looper.
Tighten setscrew C firmly.
8. Remove the gauge.
* There should be no clearance between the needle bar lower bushing and the gauge.
To adjust the position of the front needle guard:
9. Replace both #11 needles with #14 needles.
10. Push the front needle guard slightly to adjust the clearance between the #14 needles and the lower looper
to 0 to 0.05 mm. Tighten setscrew A.
Note: No need to adjust the position of tear needle guard.
11. Check the lower looper timing.
12. Check the clearance between loopers.
13. Attach the face plate unit, the needle plate and presser foot.
Illustrations are shown on the following page
Summary of Contents for 1110DX PRO
Page 1: ...SERVICE MANUAL 1110DX PRO...
