Hydro-Gear hydraulic pump r emoved from an Exmark Lazer Z zero turn lawn mower. Tested and in good working condition with no problems. Please compare part numbers, pictures and ask any questions to determine if this is right for your specific application. We have a wide variety of used parts for late model lawn and garden tractors. All parts are tested and are in good working condition before removal(unless otherwise noted). Installation/repairs should always be done by a professional. Track Page Views With. Auctiva’s FREE Counter.