The air filter should be serviced at regular intervals (see here).
Service the air filter more often if you operate your motorcycle in wet or dusty conditions.
1. Remove five bolts (1), remove the washers (2) and remove the cover (2) air filter housing.
(1) Bolts; (2) Washers; (3) Air filter housing cover; (4) Filter element
2. Remove and recycle the filter element (4).
3. Install a new filter element. Use a genuine Honda filter element or equivalent designed for your motorcycle model. Using a filter element that is not intended for this model or of poor quality may lead to accelerated engine wear or reduce engine efficiency.
4. Install the air filter housing cover, washers and tighten the bolts to a tightening torque of 3.4 Nm.