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hi i have a air cooled prox 250 and every time i give it a good run it shoots out flames and back fires but thats when i back of the throttle. In the high revs its ok and then when i slow down the motor stalls. When cruising its fine. Ive cleaned carby, airbox,fuel lines,done valve clearences...

hi i was wondering if any one knows what the outlet valve clearence is on a zongshen 250 any help apreciated

hay guys just wondering if any one can inform me on why tards have lowered suspension