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Message: [QUOTE="MXDesa, post: 1178995, member: 76784"] Hey guys i just picked up a used 2005 KX 250F Four stroke from a friend of mine and im having a problem getting it to idle. No matter what position the idle knob is at , the engine will eventually start to sputter and die off. If i adjust the idle knob high, it will idle real high and eventually idle lower and lower until it dies unless i give it some throttle. Sometimes it kicks right over and sometimes takes 4 or 5 tries. Other wise once im riding, the bike responds fine and does not bog or surge. Im new to dirt bikes and carbs so take it easy on me... My questions are.... Is there a idle knob and a air screw OR just a idle knob?? Has anyone ever experienced this idle issue on a 2005? Does anyone have any tips that can help me to get this thing to idle correctly?? Is there a write up or a guide to get a motor to idle right? Thanks everyone and i really hope you guys can help me [/QUOTE]