There are two things you need in order to properly care for your k n air filter.
Dirt bike air filter cleaning solvent.
I recommend this air filter cleaner oil kit.
Clean the air filter foam.
If not the air filter is located under your seat on a dirt bike and the same place on an atv.
It s probably a foam filter though you might have a paper filter like a k n.
Hifrom tm 38mm 45 degree angled double foam air filter replacement for 90cc 110cc 125cc 140cc 4 stroke atv pit dirt bike air cleaner 4 1 out of 5 stars 14 12 99 12.
If allowed to become dirtier than arnie in his prime it won t be able to keep out all the dirt.
Let it sit for about 10 minutes.
Once you ve removed the majority of the dirt and grime wash the filter in warm soapy water.
Once its had a chance to break down most of the dirt and grime rinse the cleaner off from the inside out to help the dirt and cleaner make its way back out of the layers of the cotton fibers.
Cleaning the air filter regularly is essential as a dirty filter prevents the entry of sufficient air into the engine which causes sluggishness and is ineffective in preventing dirt.
Apply the air filter cleaner to the filter.
Squeeze the filter thoroughly to clean out and then rinse thoroughly with clean water.
An air filter is an item made of porous material that prevents dirt from entering the bike s engine and is located in the bike s airbox usually under the seat.
It can only perform its job properly if it is kept clean.
Keep in mind that the oil comes in two types.
The air filter on your bike handles the massive responsibility of preventing sand dirt and foreign materials from entering your dirt bike s engine.
Wash the air filter in a clean non flammable not gas cleaning solvent.