Regularly check the air filter when using the open air filter box lid, clean it (for correct cleaning of the air filter, see the owner's manual of the vehicle) and replace it if necessary. KTM recommends checking after every offroad use or after 1000 km of road use.
When using the optional foam air filter 76506115000, it must be fit to the cover by grinding down the sealing flange of the air filter from 10 mm to 8 mm. This is necessary to install the components together.
