Author Topic: 04 kx250f jetting  (Read 2942 times)

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Offline Cwidova

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04 kx250f jetting
« on: April 30, 2013, 11:10:05 AM »
hi all,

about to tackle the jetting on my bike after its rebuild. i have searched the KX250f threads and also tried to have a look at the jetting part pdf on this thread (didnt open).
I was wondering if anyone had any suggestions on jetting specs for this bike that has a cylinder works 269 kit, stg 1 hotcams, boyesen quick start & full jardine system. also has twin air filter (not sure if it will make any difference).
As i dont really know much about how to jet a carb (diesel mechanic, never had to work with carbies!!) i'm not sure which to change and which to leave alone!!

Offline alexander-vmann

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Re: 04 kx250f jetting
« Reply #1 on: May 24, 2013, 04:27:39 AM »
I think you should start with stock jetting and adjust the fuel/air mixture screw! And see how that works for you. a big bore kit migth requiere more air and fuel. but since it's a suction engine. it should be able to do it by  itself
KX 500 newbie

my bike: 1993 kx500

Offline roseannaze

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Re: 04 kx250f jetting
« Reply #2 on: December 25, 2013, 10:40:28 PM »
To everyone visiting this site. Very good and useful post. It makes some stories published