Adjustment Of The Straight Stitch Lock - JUKI HZL-30Z Service Manual

4-3 Adjustment of the straight stitch lock

When selected the straight stitch (left-side needle line or central needle line), adjust the lateal play of the
needle bar.
Remove the front cover. (Including the front cover, throat plate, bottom cover and rear cover)
Adjustment 1. Turn the stitch pattern dial and set to the straight stitch (left-side needle line).
2. Turn the hand wheel, and adjust so that the tip of the needle comes to the upper face
3. Turn the adjusting screw in the figure, and adjust so that the lateral play of the needle bar
Timing belt
of the throat plate.
becomes 0 to 1 mm (0.2 to 0.3 mm is recommended.).
No lateral play Change of the needle entry point, uneasy movement of the stitch
pattern dial, uneven rotation.
Excessive lateral play
Worm gear
Feed knob
The movement of the needle bar is excessive when threading.
-8- -8- -8- -8- -8-
Needle bar
Lateral play: 0 to 1 mm
(0.2 to 0.3 mm is recommended)