Air filter box - Yamaha ATV Forum
 
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post #1 of 13 Old 12-25-2010, 04:57 PM Thread Starter
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Air filter box

Hi
I just got the K&N air filkter for my Raptor 350. the cover (air box lid) of the air filter box do not fit when the K&N filter is installed.
It is necessary to put the lid back?
What are the pros' & cons' of leave it with out the lid?

Please help.

thanks
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post #2 of 13 Old 12-25-2010, 05:44 PM
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u can alter(trim or cut) the lid to fit or leave it off if the filter clamps onto an adapter. i would recommend a filter skin or outerwear as to keep dirt and water out of the filter. more air will b let in now so you'll most likely have to re-jet to enrich the air-fuel mix. the good news is you'll have more hp as a result and a throatier sound without the lid!
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post #3 of 13 Old 12-27-2010, 08:18 AM
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If you have the aluminum adapter setup you don't need the lid unless you ride in deep water.

01' Raptor 720, Stage 2, FCR'd
97' 250 Vitos Blaster
06' Rhino 450
94' Banshee T-5's, Vforce, ported, Cool Head, 2-1
06' Wolverine 450 - Stock!
06' LTZ 440
94' Vmax4 750, 96' 600 MountainMax
06' Vmax 1200
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post #4 of 13 Old 12-27-2010, 03:49 PM
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I'm new here and to the 4-wheeling world. I just bought a very low hour, 2004 Warrior.

Does anybody have a part number(s) for this particular style adaptor/K&N set-up?

Thanks
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post #5 of 13 Old 12-27-2010, 06:56 PM
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your local moto shop should be able to get that number for you. its been a few years sice i put mine on and its great, i just took off the lid and used a filter skin
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post #6 of 13 Old 12-28-2010, 09:58 AM
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Check nossmachine.com and go to Yamaha parts.

01' Raptor 720, Stage 2, FCR'd
97' 250 Vitos Blaster
06' Rhino 450
94' Banshee T-5's, Vforce, ported, Cool Head, 2-1
06' Wolverine 450 - Stock!
06' LTZ 440
94' Vmax4 750, 96' 600 MountainMax
06' Vmax 1200
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post #7 of 13 Old 12-28-2010, 07:10 PM
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Sorry if this is a dumb question but, what is the advantage to using the
adaptor and K&N filter opposed to just using the K&N OEM replacement?

Thanks
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post #8 of 13 Old 12-29-2010, 12:49 PM
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Quote:
Originally Posted by S/ST 3040 View Post
I'm new here and to the 4-wheeling world. I just bought a very low hour, 2004 Warrior.

Does anybody have a part number(s) for this particular style adaptor/K&N set-up?

Thanks



K&N ref# for warrior filter YA-4350 or 774350 from WPS, i didn't have to modify my air box cover at all.
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post #9 of 13 Old 12-29-2010, 01:30 PM
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Quote:
Originally Posted by S/ST 3040 View Post
Sorry if this is a dumb question but, what is the advantage to using the
adaptor and K&N filter opposed to just using the K&N OEM replacement?

Thanks
OEM (stock style) filter DO NOT seal very good.

prodesign make the best kits, IMO
their foam filter kit part number is PD202
their K&N kit is PD203
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post #10 of 13 Old 01-02-2011, 11:14 AM
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A little silicone adheisive will fix that.
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post #11 of 13 Old 01-02-2011, 11:38 AM
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I wouldn't recommend leaving the air filter box lid off, if you ride in a very dusty and sandy area like i do (Mojave Desert) as sand likes to get in everything. But if you have to use the slip on cover just as an extra measure.

1996 Yamaha Warrior 350
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post #12 of 13 Old 05-23-2011, 10:33 PM
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I just recently got an 87 TRX 250X, not a Yamaha unfortunately but I got it free, it's almost ready to ride, I just need a new air filter and fix the tranny which I'll have done soon but I would like to know what filter I should look for that will work do wonders for mine, it's all stock at the moment and I don't plan on doing anything just yet, but any suggestions would be great people, just need an air filter that fits and a suggestion for a cover to keep it as new as possible, thanks everybody!
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post #13 of 13 Old 05-23-2011, 10:35 PM
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Air Filter Suggestions

I just recently got an 87 TRX 250X, not a Yamaha unfortunately but it is a great machine, it's almost ready to ride, all I need is a replacement air filter because the one it's got is in bad shape and to fix the tranny which will be done shortly, any suggestions on a well performing air filter that'll do wonders on a stock quad would be great, preferably as low priced as possible but the highest quality for such a price. Thanks everybody!
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