Two Stroke Motocross

Two Stroke Motocross Forum => General Two Stroke Talk => Topic started by: Braap257 on August 20, 2010, 11:04:12 AM

Title: Where is the air screw on my 2004 yz250?
Post by: Braap257 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?

Title: Re: Where is the air screw on my 2004 yz250?
Post by: ford832 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.

Title: Re: Where is the air screw on my 2004 yz250?
Post by: MXLord327 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.

Title: Re: Where is the air screw on my 2004 yz250?
Post by: Hondacrrider on August 20, 2010, 04:17:49 PM

Would this be any different for my 2001 cr125? It has a mikuni carb.

Title: Re: Where is the air screw on my 2004 yz250?
Post by: RideRedMx2 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