Service Manual February 2017Checklist B Procedures44 S-80 • S-85 • S-80X Part No. 1259369GT3 Using a mild solvent, carefully wash the capventing system. Dry using low pressurecompressed air. Repeat this procedurebeginning with step 2.4 Install the fuel tank cap onto the fuel tank.5 Remove the breather cap from the hydraulictank.6 Check for proper venting.Result: Air passes through the breather cap.Proceed to step 8.Result: If air does not pass through the cap,clean or replace the cap. Proceed to step 7.Note: When checking for positive tank cap venting,air should pass freely through the cap.7 Using a mild solvent, carefully wash the capventing system. Dry using low pressurecompressed air. Repeat this procedurebeginning with step 6.8 Install the breather cap onto the hydraulictank.B-20Perform Hydraulic Oil AnalysisGenie specifications require that this procedure beperformed every 250 hours or quarterly, whichevercomes first.Replacement or testing of the hydraulic oil isessential for good machine performance andservice life. Dirty oil and a clogged suction strainermay cause the machine to perform poorly andcontinued use may cause component damage.Extremely dirty conditions may require oil changesto be performed more often. For hydraulic oilspecifications, Refer to Specifications, HydraulicSpecifications.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 at thetwo year inspection, test the oil quarterly. Replacethe oil when it fails the test. Refer to MaintenanceProcedure, Test or Replace the Hydraulic Oil.