Lower Looper Timing - Janome 134D Service Manual

LOWER LOOPER TIMING

When the needle comes up 2.8 to 3.2mm (7/64 to 1/8") from the lowest position, the tip of the
lower looper (H) comes just left of the needle (I) on the right.
TO ADJUST
1. Remove the presser foot, needle plate and left-side needle.
2. Change the right-side needle to size 11 one.
3. Turn the hand wheel toward you to set the lowest needle position.
4. Set the Gauges 787-G02 (J) and 787-G03 (K) with the bolt (B) as shown in *** A ***.
* There should be no clearance between the gauges (J & K) and the needle bar lower
bushing (L).
5. Remove the Gauge 787-G03. Then turn hand wheel toward you until it touches the needle
bar lower bushing (L) as shown in *** B ***.
6. In this condition, loosen the hexagon bolt (F) just enough to move the lower looper driving
arm (G). Adjust the lower looper position so that the tip of lower looper comes to the left
side of the needle.
not tighten the bolt (F) too much. Otherwise the lower looper driving arm (G) will be
cracked.
7. Remove the Gauge 787-G02.
∗
Check the clearance between the needle and lower looper. (Refer to pages 19 & 20.)
∗
Check the clearance between the loopers. (Refer to page 25.)
8. Attach size 14 needles to the needle clamp.
9. Attach the needle plate and presser foot.
Tighten hexagon bolt (F) as shown in *** C *** and *** D ***. Do
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