To Adjust The Position Of The Upper Looper - Janome MyLock 744 Servicing Manual

Correct setting:
When the upper looper is at the leftmost position, the distance between the center of needle on the
right and the center of looper eye should be 4.8 to 5.2 mm.
To adjust:
1. Remove the machine base.
2. Loosen the hexagonal socket screws A, and adjust the distance between upper looper shaft
guide and bottom of upper looper. The distance should be 1.6 to 1.8 mm when the upper looper
is at the lowest position as shown in Drawing 1.
3. Tighten the hexagonal socket screws A.
4. Turn the handwheel and bring the upper looper to the leftmost position.
5. Remove the spreader setscrew B and spreader holding plate C.
6. Loosen the hexagonal socket screw D, and adjust the distance between the center of needle
and center of upper looper eye as shown in Drawing 2.
7. Tighten the hexagonal socket screw D.
8. Set the spreader holding plate C to the upper looper shaft, and tighten the spreader setscrew B.
9. Check the upper and lower loopers timing and clearance between upper and lower loopers.
10. Attach the machine base.
Upper looper
1.6 to 1.8 mm
TO ADJUST THE POSITION OF
THE UPPER LOOPER
Upper looper shaft guide
Upper looper shaft
Hexagonal socket screws A
Drawing 1
1.7 mm
O.L G05
Spreader
holding plate C
Upper looper
18
Needle on the right
5mm
Drawing 2
Spreader
setscrew B
Hexagon socket
screw D
Drawing 3
Upper looper
shaft