Part No. 139378 Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N 3 - 19Section 3 • Scheduled Maintenance ProceduresJune 2011REV B CHECKLIST B PROCEDURESB-15Perform Hydraulic Oil AnalysisNote: Genie specifications require that thisprocedure be performed every 250 hours orquarterly, whichever comes first.Replacement or testing of the hydraulic oil isessential for good machine performance andservice life. Dirty oil and suction strainers maycause the machine to perform poorly andcontinued use may cause component damage.Extremely dirty conditions may require oil changesto be performed more often.Note: Before replacing the hydraulic oil, the oil maybe tested by an oil distributor for specific levels ofcontamination to verify that changing the oil isnecessary. If the hydraulic oil is not replaced atthe two year inspection, test the oil quarterly.Replace the oil when it fails the test. See E-1,Test or Replace the Hydraulic Oil.