Tends equipment to transfer surplus yeast from fermenting cellar to storage tanks in yeast drying plant: Couples hose between yeast tank and flow lines, using wrench. Opens valves on line to effect uninterrupted flow. Notifies yeast plant to prepare to receive yeast. Opens gravity-feed outlet valve to permit yeast to drop into storage tanks. Climbs into tank to spray yeast residue with water and pushes it to outlet to complete transfer, using water hose and paddle.