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08ktm xcf 250

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When you hit the gas and let off it has a high idle for about 2 seconds

It will not hurt to ride it, but it might hurt you......unless you keep a close hand on the clutch....

 

That is called hanging idle, and while it is a carb problem, it is not jetting

 

I will assume you have already correctly adjusted your fuel screw. If not, read the 'how to set you pilot' at the top of this forum.

 

Otherwise

 

Replace:

 

Slide plate seal

Fuel screw oring (better; add an R&D remote fuel screw so you can properly adjust the fuel screw for air density changes)

Hot start plunger: make sure it is not corroded and moving freely: clean/polish/grease it and the cable

Hot start nut: they crack, leaking air into the carb. If cracked, replace with zipty aluminum nut

Header crush washer (most ktms do not have this...)

Muffler packing: replace it (stock KTM's do not have this)

Edited by Kah Ran Nee

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