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TokioMX

Thin Form inside Air Filter, 2010 YZ450F

7 posts in this topic

Anybody know what the thin form inside an air filter on 2010 YZ450 for? Is it to keep you from dropping any dirt inside? I nor a dealer guy never seen these on any street FI bikes.

530c.jpg?BCPaI8LB_ImJtNLq

What I'm talking about is #28 on illustration, #29 being regular Air Filter, and #27 is backfire net.

Japanese manual just say "Do not to take it off." It's only like 130yen (maybe $1.40) I changed it a couple of times already when it got little dirty. 

I wonder if after market filter company like Uni still recommend to keep this form when their filter is installed.

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i ditched the little filter and the screen when i put my gytr filter on

GYTR filter looks like made by Uni... Did it tell you to take them off?

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I believe that it is there to prevent dirt and other things from falling down into throttle body.

That's what I though too. I guess Yamaha is just being extra cautious.

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i ditched the little filter and the screen when i put my gytr filter on
Removing the flame screen is a bad idea. In the first place, it won't accomplish anything from a performance standpoint, as the filter itself is more restrictive than the screen is. Secondly, there's a real, even if small, risk of fire in doing so. This was bad enough in the conventional layout, but now, with the filter located under the front of the fuel tank , it seems even less desirable, somehow.

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