1) Hydraulic pumps are covered by a limited 6-month manufacturer warranty against defects in materials and workmanship from the date of purchase. 2) The hydraulic system must be properly flushed and cleaned, and new hydraulic oil installed prior to installation. Damage caused by contamination, improper installation, reuse of old hydraulic oil, misuse, or system-related issues is not covered under warranty. 3) Hydraulic pumps that have been installed, used, or modified are not eligible for return or refund. 4) Professional installation is strongly recommended.