Toyota SD Service Manual page 42

Adjustment of respective parts
[Standard]
Width must be the same at right and left. (Fig. 4)
* Make adjustment if the diagnosis result fails to
meet the standard.
[Adjustment]
1. Remove the external panels and others to
see the adjusting section. (See:page.45)
2. Turn the adjustment screw, eliminate the
difference of stitch width at right and left.
(Fig. 5)
When the width at left is narrower than right,
turn the screw to right.
When the width at right is narrower than left,
turn the screw to left.
* Repeat the adjustment till the standard is met.
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