Zeroing Vacuum GaugeNOTE: To zero monitor vacuum gauge, see your monitor's operator's manual. With vacuum pump system shut off and vacuum gauge in a vertical position, disconnect vacuum gauge hose to vent gauge to atmosphere. Use the zero adjusting screw (A) to set the gauge pointer exactly on zero mark. Connect gauge hose, activate vacuum pump hydraulics, fill seed-disk cells with seed by driving forward with planter lowered and adjust vacuum level to recommended setting.
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