38Maintenance IntervalsElectricInstallationProtect all wires against contact with oil products. Keep allelements clean and avoid any damage of wires - short circuitrisk. All connections must have clean and proper contactsurfaces to avoid intermediate resistance at a wrong contactpoint.Hydraulic OilChangeDo the first oil change after the first 500 running hours or afterthe first season. Next oil changes always after 1000 runninghours. It is recommended changing the filter element togetherwith the oil change.Hydraulic OilFilter ChangeWe recommend changing the filter element together with theoil change.