Adjusting The Position Of The Needle Bar And The Hook; Adjusting The Height Of The Needle Bar; Changing The Position Of The Throat Plate (Hook Base) (Adjustment Of The 1St Hook) - JUKI MOL-254 Engineer's Manual

(7) Adjusting the position of the needle bar and the hook

1) Adjusting the height of the needle bar

Adjust so that the upper engraved marker line on the needle bar on this side is aligned with the lower
end face of the needle bar lower bushing at the lowest dead point of the needle bar. At this time, the
clearance provided between the top surface of the throat plate and the needle bar connecting base is
17.1 mm.

2) Changing the position of the throat plate (hook base) (Adjustment of the 1st hook)

Standard Adjustment
17.1 mm (0.672")
Center
0.05 to 0.1 mm
(0.001 ot 0.003")
39
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