To Adjust The Timing Of The Needle And The Lower Looper - Janome MyLock 744 Servicing Manual

Correct setting:
When the needle comes up 2.8 to 3.2 mm (7/64 to 1/8") from its lowest position, the tip of the lower
looper comes just left of the needle (#11) on the right.
To adjust:
1. Remove the presser foot, needle plate and left-side needle.
2. Replace right-side needle with a #11 one.
3. Turn the handwheel toward you to get the lowest needle position.
4. Set the two gauges (787-G02, 787-G03), as shown in Drawing 1 and tighten bolt B.
* There should be no clearance between the gauges and the needle bar lower bushing.
5. Remove the plate gauge (787-G03). Then turn the handwheel toward you until the needle
gauge touches the needle bar lower bushing, as shown in Drawing 2.
6. In this condition, loosen the hexagonal bolt C just enough to move the lower looper base.
Adjust the lower looper position in order to meet the tip of lower looper with left-side of needle
(#11) as shown in Drawing 4.
Tighten hexagonal bolt C.
7. Remove the gauge (787-G02).
¥ Check the clearance between the needle and lower looper.
¥ Check the clearance between the loopers.
8. Replace the right side needle with a #14 one.
9. Attach the needle, needle plate and presser foot.
* Be careful not to tighten bolt B too much.
No clearance !!
Plate gauge (787-G03)
(Thickness : 3 mm
Color : Black)
Lower looper base
TO ADJUST THE TIMING OF THE NEEDLE
AND THE LOWER LOOPER
Needle bar lower bushing
Needle gauge
787-G03
(787-G02)
Drawing 1
Drawing 3
Bolt B
Turn the
handwheel
Lower looper
Lower looper
Hexagonal bolt C
19
Drawing 2
Right needle #11
3 mm
Drawing 4