See Figure 1. The engine air cleaner is a paper/wire mesh air filter element.
Refer to Maintenance Scheduling → Regular Service Intervals → Regular Service Intervals: 2006 Sportster Models. Remove air cleaner cover and inspect filter element at proper intervals. Under dusty conditions, inspect more often.
The paper/wire mesh air filter element should be washed in luke warm water with a mild detergent.
Compressed air can pierce the skin and flying debris from compressed air could cause serious eye injury. Wear safety glasses when working with compressed air. Never use your hand to check for air leaks or to determine air flow rates. (00061a)
Install air filter before running engine. Failure to do so can draw debris into the engine and could result in engine damage. (00207a)
3Filter element
Figure 1. Air Cleaner Assembly: Sportster Models