Janome Mylock 634D, Руководство по обслуживанию

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TO ADJUST THE UPPER & LOWER
LOOPERS TIMING
When lower looper (C) moves to the right, the lower looper (C) meets the upper looper (D) within
1 mm (J) from the left of lower looper eye at a right angle as shown in **E**.
To adjust:
1. Before proceeding with this adjustment, check the lower looper timing and the position of
upper looper.
2. Remove the machine base.
3. Loosen the two setscrews (F), and adjust the timing by turning the upper looper drive cam (G)
in the direction of:
(A) If the timing of upper looper is advanced as shown in **H**.
(B) If the timing of upper looper is delayed as shown in **I**.
The allowance is 1 mm from the left edge of lower looper (C) eye as shown in **E**.
4. Tighten the 2 setscrews (G).
5. Check the clearance between the loopers.
6. Attach the machine base.
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