Refer to Maintenance Scheduling → Regular Service Intervals: Softail Models → Regular Service Intervals: 2009 Softail Models. Have a Harley-Davidson dealer drain the front fork oil and refill at proper intervals. If fork does not appear to be working properly or an appreciable amount of oil leakage should develop, see a Harley-Davidson dealer. If there is insufficient oil in either side of fork, the rebound action will be incorrect.