K&N空气过滤器使用的是涂油的棉纱结构，快速清洁K&N空气过滤器的步骤如下：

K&N Air filters use an oiled cotton gauze construction

Quick Steps to Clean a K&N Air Filter

1、Remove filter from engine .

2、Shake out loose dirt and debris.

3、Apply spray cleaner onto the filter.

4、Wait 10 minutes.

5、Use low pressure water to wash the filter.

6、Dry filter completely.

7、Apply new oil to filter (do not over-oil).

8、Re-install filter.