Gritzner 1002 - Adjustment of the Needle Zero Point for the Straight Stitch

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2. Adjustment of the needle zero point for the straight stitch
Requirement:
When the control knob for utility and zigzag stitches is set to “left” needle position, the machine
must sew a perfectly straight stitch.
The lifting clearance between the feeler finger 2 and the highest points of the zigzag cam 1 must
be 0.1-0.2 mm (fig. 2 and 2b).
Check:
● Fold up the carrying handle.
● Turn out both arm cover screws and remove arm cover.
● Set stitch control knob as shown in fig. 2.
● Run the machine slowly.
The needle bar frame should have no sideways movement.
The feeler finger 2 must not touch the highest points of the zigzag cam 1 (fig. 2b).
Adjustment:
● Turn the handwheel until the feeler finger 2 is at the highest point of the zigzag cam 1.
● Loosen nut 5 (fig. 2a and 2c).
● Turn screw 6 until it touches zigzag width cam 7 and the clearance between feeler finger 2 and
the highest point of zigzag cam 1 is 0.1-0.2 mm (fig. 2b).
● Tighten nut 5 without turning screw 6 (fig. 2c).
Test:
● Run the machine slowly.
The needle bar frame is not allowed to make any sideways movement.
The lifting clearance between the feeler finger 2 and the highest point of the zigzag cam 1 must
be 0.1-0.2 mm (fig. 2b)