Question about 2008 KTM 250 EXC-F

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I have a 2006 ktm sxf250 and would like to convert to woods bike I need to keow about the carb, jetting and settings to get bike to not bottom out on a slow to mid range hill pull

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The carb jets and settings are reliant on it supplying the correct air fuel mixture, this doesnt change by riding in the woods. But can be affected by altitude and air temperature.and engine temperature.
There may be some small jetting adjustments necessary but it will depend a lot on the terrain and riding style

There are flywheels available which are heavier and help considerably in the low to mid range, with out sacrificing the top end power and will help with what you are asking.

Posted on Sep 02, 2010

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Remove the stuff you don't want to be broken > turn signals, tail light assembly, mirrors. Leave the carb alone. Change to a larger rear sprocket. Add 10 to 16 teeth to it. Now the engine has much more torque to pull up a hill. > please rate my answer >

Posted on Sep 02, 2010

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Your carb needs to be cleaned. More specifically, the pilot jet, but if it's clogged it'd be best to go ahead and clean the whole thing.

Remove the carb from your bike and then remove the bowl from the bottom. You'll then be looking at the jets and float valve. The jet causing your issue is the smallest one. Remove it and carefully spray it out with carb cleaner. Then hold the jet up and see if you can see light through the hole and that it appears clean and round-meaning no obstruction left. Locate the mixture screw on the outside of the carb. It should use a flat screwdriver. First turn the screw in and count the number of turns. Then remove the screw, followed by the spring and ,if applicable, a small o-ring. Spray through the hole and make sure it goes through and comes out somewhere. Replace the screw in the reverse order and set to the original setting you counted in the beginning.(rough estimate is 1.5 turns out. Cleanliness is the key to the carb working. So keep it spotless inside and reinstall. This should take care of your problem.

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Fitting a new head will not give spluttering in the gears .Your problem will not be anything to do with the mixer screw .check your carb jets for blockage .

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Stallhofnerstraße 3, A-5230 Mattighofen
Tel. +43 7742/6000-0, Fax. +43 7742/6000-0

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