Fitting a new air filter on your bike is a key maintenance task that helps your engine breathe properly. While specific steps can vary by motorcycle model, the general process involves accessing the airbox, removing the old filter, and installing the new one.
A clean air filter ensures your engine gets clean air for optimal combustion, leading to better performance and fuel efficiency. A clogged or dirty filter restricts airflow, which can reduce power, waste fuel, and potentially allow harmful particles to enter the engine. Regularly replacing or cleaning your air filter is a simple way to maintain your bike's health and longevity.
Getting Started: Locating the Airbox and Tools
The airbox, which houses the air filter, is typically located under the seat, under a side panel, or sometimes under the fuel tank. Consult your bike's owner's manual if you're unsure of its exact location.
You'll generally need basic hand tools to access the airbox.
- Common Tools:
- Screwdrivers (Philips and flathead)
- Socket set or wrenches (depending on fasteners)
- Gloves (optional but recommended)
- Clean rag or paper towels
- Your new air filter (or filter cleaning kit for reusable filters)
Removing the Old Air Filter
Once you've found the airbox, you'll need to open its cover to access the filter inside.
- Unfasten the Cover: Remove the screws, bolts, or clips holding the airbox cover in place. Keep track of the fasteners so you can put them back correctly.
- Expose the Filter: Carefully lift or remove the cover to reveal the air filter element.
- Remove the Old Filter: Lift the old filter out of its housing. This step is critical for preventing dirt from entering your engine's intake. As demonstrated in the provided reference, when you pull out the old filter, you should twist it a little bit downwards as you remove it. This technique helps ensure that the dirt accumulated on the filter does not rotate and fall into the clean side of the airbox or the engine intake tract.
Inspecting and Cleaning the Airbox
With the old filter removed, take a moment to inspect the inside of the airbox.
- Clean the Box: If you see any loose dirt, dust, or debris inside the airbox (especially on the clean side), wipe it out carefully with a clean rag.
- Check the Seal: Look at the rubber seal around the perimeter where the filter sits. Ensure it's clean, pliable, and free from damage. A good seal is essential to prevent unfiltered air from bypassing the filter.
Fitting the New Air Filter
Now you're ready to install the replacement filter.
- Select the Correct Filter: Make sure you have the right type and size of filter for your specific bike model.
- Position the New Filter: Carefully insert the new filter into the airbox housing. Ensure it sits correctly and is oriented properly. Many filters only fit one way.
- Ensure Proper Seal: Verify that the new filter is seated flush all around and makes firm contact with the sealing surface in the airbox. This creates the airtight seal needed for effective filtration.
- Reinstall the Cover: Place the airbox cover back on and secure it with the screws, bolts, or clips you removed earlier. Be careful not to overtighten fasteners, especially if working with plastic airbox components.
Filter Types and Tips
Bike air filters come in various materials, with the most common being paper and foam.
| Filter Type | Maintenance | Typical Use |
|---|---|---|
| Paper | Replace when dirty | Street bikes, many modern bikes |
| Foam | Clean and re-oil | Dirt bikes, some street bikes |
- Paper filters are designed for one-time use and should be replaced when they are dirty.
- Foam filters are typically reusable. They require cleaning with a specialized cleaner and then re-oiling with filter oil before being refitted.
Always refer to your bike's service manual for model-specific instructions and recommended filter replacement intervals.
