How to Clean the Air Filter on a Honda ATV

Most ATV owners operate their machine in harsh riding conditions, which means more dirt and debris make their way into the air filter.

Cleaning the air filter on your ATV is an essential part of its maintenance routine. A dirty air filter hurts performance, and leads to worse problems down the line. Luckily, a lot of ATV air filters are reusable, which can save you some money in the long run if you know how to clean them yourself. 

A foam air filter on a Honda TRX ATV has its own model-specific cleaning tricks, but this step-by-step guide will help you get down the basics of cleaning any ATV air filter. 

ATV foam air filter clean and lubricate

Tools and Supplies Needed - Honda TRX Air Filter Cleaning


  • Phillips head screwdriver

Removing a Honda TRX Air Filter

Step 1. Locate the latch underneath the rear of the seat that locks the seat in place. Pushing the lever on the latch will enable you to lift the seat and fender assembly completely off. 

Honda TRX ATV air filter cleaning

PRO TIP: Watch the video below to learn how to remove and replace the seat on a Honda TRX.

Step 2. Find the airbox underneath the seat and open it by removing the six clips, one on each corner and one on each of the long sides of the box. 

Honda TRX air filter airbox cover

Step 3. Use a Phillips head screwdriver to loosen the hose clamp holding the air filter in place, and work it off by wiggling it back and forth.

Step 4. Remove the hose clamp by lifting it off completely.

Honda ATV air filter removal

Step 5. Next, work the foam air filter off the inner frame of the filter and slide it off. 

Cleaning a Honda TRX Foam Air Filter

Step 1. Inspect your filter for deep cuts and other damage that might allow dirt to get past the filter material. If you find any damage of the sort, you need to get a new foam air filter

Honda ATV air filter cleaning

Step 2. Use a foam filter cleaner spray on the filter to loosen the dirt. Spray it on evenly, knead it in, and then let it sit for about 15 minutes. 

ATV foam air filter cleaning

Step 3. Next, rinse the filter out in a bucket of water. Gently squeeze the filter as you work it around in the bucket to get the dirt to come loose. 

Honda ATV foam air filter cleaning

Step 4. After you've rinsed the filter, let it sit overnight to dry completely before reinstalling it. 

Step 5. Once the filter is dry, spray it liberally with foam filter treatment. Be sure to spray both the inside and outside surfaces of the filter. 

Honda ATV foam filter cleaning spray

Installing a Honda TRX Foam Air Filter

Step 1. Slide the foam air filter back over the inner frame and replace the hose clamp. Make sure the filter's rubber boot covers the top of the inner frame of the filter. 

Honda TRX air filter clean and replace

Step 2. Replace the filter over the air intake by wiggling it back on.

Honda ATV air filter cleaning

Step 3. Tighten the hose clamp with your Phillips head screwdriver. 

NOTE: Be careful not to overtighten the clamp, as it can rip the filter.

Step 4. Replace the top of the air box and clip the six latches into place. 

Step 5. Replace the seat by lining up the front of the seat and then pushing down on the rear of the seat to re-engage the latch. 

PRO TIP: If you're struggling to get the seat back on, go back to Step 1 at the beginning of this article and watch the Honda TRX seat removal and replacement video for assistance.

Looking for a way to simply change out the air filter on a TRX with minimal cleaning? Watch the video above to learn how to change the air filter on a Honda Rancher TRX 350.


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