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Extending the Mast Use the steel guy ropes and hooks for additional support. Hook one end to the mast’s anchor plate. Attach the air pump—manual or automatic—to the lift valve on the mast. Unlock the mast height screw locks. Open the air valve to begin the extension. The mast will rise under air pressure. Repeat the unlock and lift process for each telescopic segment. Close the valve once desired height is achieved. Pull each guy rope fully outward and secure to ground anchors with nails. Repea