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Author Topic: Where is the air screw on my 2004 yz250?  (Read 2203 times)

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Offline Braap257

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Where is the air screw on my 2004 yz250?
« on: August 20, 2010, 11:04:12 AM »
The only screw i find that can be adjusted has a spring in it and i figure thats idle. where is the air mixture screw?
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Offline ford832

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Re: Where is the air screw on my 2004 yz250?
« Reply #1 on: August 20, 2010, 11:40:58 AM »
Directly below it.A little brass screw that sits flush rather than stick out like the idle screw.
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Offline MXLord327

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Re: Where is the air screw on my 2004 yz250?
« Reply #2 on: August 20, 2010, 01:34:56 PM »
On my '98 YZ250, the idle screw is also the choke plunger, it rotates to change the idle.  The air screw is the only one on the side of the carb.
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Offline Hondacrrider

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Re: Where is the air screw on my 2004 yz250?
« Reply #3 on: August 20, 2010, 04:17:49 PM »
Would this be any different for my 2001 cr125? It has a mikuni carb.
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Offline RideRedMx2

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Re: Where is the air screw on my 2004 yz250?
« Reply #4 on: August 20, 2010, 05:58:54 PM »
It should be right above the float bowl,left side of carb back by the clamp that goes on the airboot its a small slotted screw that sits flush in the carb body....should be 1 1/2 to 2 turns out from fully bottomed as a starting spot
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