Hi John Talley here with Partzilla.com.
Today we're going to be pulling and evaluating an air filter on our 2007 Honda TRX400EX.
It's a fairly simple procedure, starts with just pulling the seat and fender assembly,
so let's get started.
What you're looking for here is a latch up under the seat, you want to compress it and
then lift the entire seat and fender assembly off.
Alright, once you get the seat pulled, you'll have access to the airbox.
The airbox lid is actually only held on by six clips, once you get those popped the lid
will just lift right off.
Alright, taking a look at her, it doesn't seem to be in that bad of shape, I think it's
something we can get cleaned up, re-oiled and then reinstalled.
Now, to pull it out, all we need is just a Phillips screwdriver, doesn't get any simpler
than that.
Couple of turns on this hose clamp, small twist, pulls straight out.
From here we just need to get her cleaned up.
And here's our air filter.
First thing we need to do is remove the clamp and then the inner frame which supports the
weight and the structure of the air filter.
Once we've done that, we want to take a little bit closer look at the air filter itself making
sure there are not cuts or rips in the rubber.
All that looks good.
So all that we need to do now is use a little bit of our cleaner spray, spray it down liberally,
kneed it into the filter itself and then it's going to sit for about 15 minutes.
This stuff is flammable so I recommend you wear gloves while you're doing this.
Make it's shaken up really well.
Then just start spraying it in.
Don't be afraid to add a little more on the bottom, or what was the bottom, of the filter
because that's where a lot of the oil and the dirt kind of get collected.
Get a nice coat on it all the way around and then just start kneading it in.
Then once you're done doing this, go ahead and just let the filter rest for about 15
minutes, then we'll go through the clean up procedure.
So I'm gonna go relax for a minute, maybe watch a little bit of TV then we'll be back
and we'll take a look at it.
See you in a few.
And welcome back, the next step in the process is to take the filter rinse it out in the
water and then let it dry probably over night because it needs to be completely dry before
we apply the foam filter oil.
Alright?
Sink it into the water, you want to gently go around the foam.
See all that stuff coming off, that's exactly what we're trying to keep out of your engine.
Work it around from the outside, pushing against your fingers that are on the inside of the
filter, all the way around and up and down.
And when I pull it up out, you can see it's starting to come back to that nice yellow
color it had when it was brand new.
I'm gonna do that a few more times, making sure you work out as much of the gunk and
the dirt and the oil as you can.
Squeeze, but not too hard because we don't want to rip the foam.
Alright, here comes the point where you have to be patient.
This needs to dry, like I said earlier, over night.
And then you can apply the foam filter oil.
So until then, have a good night.
And welcome back.
It's been 24 hours and our filter is completely dry, and as you can see, this PJ1 foam filter
cleaner really did the trick.
I mean, don't be tempted to use a brake cleaner or a carb cleaner solution because that will
end up just destroying the foam and you'll end up having to buy a new one.
Now all that's left is to apply a layer on the inside and outside with foam filter oil.
So what we need to do it shake it up, and then spray it liberally on the outside as
well as on the inside.
So here we go.
Want to do a nice even coat but don't get too carried away.
All the way around and then on the inside.
After that you want to go ahead and knead it in, get it worked into the foam.
Once that's complete, you just need to reinstall the filter onto the cage, reattach the clamp,
and then we can reinstall it on the ATV.
There's not that much to it.
And there you have it, one clean and oiled filter ready to go.
Let's get it back in the machine.
Alright, and now we're ready to get the air filter back in.
You want to make sure the frame itself goes to the inside of the boot and of course the
filter wraps around the outside.
So let's get her in there.
Start at the top, push the bottom in, put your hand up around the front, make sure that
the filter is all the way on.
You want to have your clamp with the Phillips head screw about right there where you can
get to it.
You want to get it tightened down snug but not too tight.
Otherwise you can rip into the filter itself and that's what we don't want.
About right there.
Alright at this point all we need to do is get our airfilter box cover back on, all six
clamps in place, like that.
And this is probably the hardest part of the whole procedure, getting the seat with the
fenders back on the machine.
At this point you want to push the front down to get the U of the seat to line up on that
front bolt, bring it forward and then lock it in place.
That actually went pretty smooth.
Guys, that's all there is to it.
The machine's ready to go.
Appreciate you watching, we'll see you next time.