Adjust Opener Downforce—Tractors with Closed-Center Hydraulic Systems

1. Adjust opener downforce to keep gauge wheels in firm contact with soil. Avoid machine damage. Do not use more downforce than necessary.

   Active hydraulic downforce systems require tractors with a closed center or pressure/flow compensated hydraulics.

   
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   A - Dial, Adjustment

   B - Pressure Gauge

   C - Dial, Lock

   D - Lever

   (See Principles of Active Hydraulic Opener Downforce System in this section.) Decide initial pressure setting.

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2. Move lever (D) forward until in lower detent position. Time detent must be set to continuous.

3. Loosen dial (C), watch pressure gauge (B) and rotate dial (A) to adjust downforce to a desired setting. Once set, lock dial (A) into position with dial (C). If gauge needle does not move, see Troubleshooting section.

4. Make a trial pass in the field.

5. If opener penetration and gauge wheel contact with soil are not satisfactory, increase downforce. If gauge wheel contact with soil is adequate but opener penetration is not, adjust opener components. (See Seed Opener Components and Adjustments and Adjust Gauge Wheel and Seeding Depth in Preparing the Machine section.)