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8.4 Calibrating the zero point on the infl ation volume indicator
8.4-1 Rotate the adjusting screw (C) to the left until the
indicator is set just above the zero mark at the ventila-
tion side. A stop has been introduced at the zero mark.
Set to the zero mark and give a half turn to the right.
Make sure that the tip of the screw rests inside the
recess on the leaf spring.
8.4-2 Replace the cover plate.
C