See Maintenance Scheduling → Regular Service Intervals → Regular Service Intervals: 2006 Sportster Models. A screen type fuel strainer is located on top of the supply valve inside the fuel tank. Screen should be inspected/cleaned at proper intervals. Check the fuel valve, lines and fittings for leakage as part of the preride inspection. Refer to Maintenance Scheduling → Regular Service Intervals → Regular Service Intervals: 2006 Sportster Models.