JUKI MO-1000 Series Service Manual page 27

adjustment Procedure
Checking items:
1 Left hand needle
2 Upper looper
* Check that distance (projecting amount) a from the left end of left
hand needle 1 to the blade point of upper looper 2 is 6.8 ± 0.3 mm
when the upper looper is in its leftmost position.
How to perform adjustment:
○ Bring upper looper 2 to its leftmost position.
○ Loosen setscrew (B) of the upper looper arm.
○ Adjust the projecting amount of the upper looper by moving upper
looper siding shaft (C) up and down.
○ Tighten setscrew (B) of the upper looper arm.
○ Turn the handwheel to check whether the rotation torque is increased.
○ Loosen screw (D). Adjust so that a clearance of 0 ± 0.15 mm (E) is
provided between the needle and the upper looper.
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Results of Improper adjustment
If the standard adjustment value is
exceeded, stitch skipping can be
caused.