Maintenance & Technical > KX250 / KX125

Same old stuff ?? Jetting

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Just an old rider:
  Ok it is not for my recently rebuilt kx125 that just now seized after 3 hrs riding...but it is for a yz and ktm 125 my sons have  Both bikes have a nasty studder-or choking out at low rpm ..and want to foul plugs quickly... how can I lean out the carb so the boys don't have to be on the stick all the time ??/ 

hughes:
What year are the bikes? A high hr bike could use a float height check before making any jetting adjustments. Maybe worn needle / seat area.

Friar-Tuck:
 JANO-Rider
  I'm sure there is some other info the guys might like to have before throwing some suggestions out there. 
   Air filter clean, Fresh fuel & Octane rating, Fuel/Oil Ratio, last top end service, Reeds, Weather, Altitude, has carb been cleaned, etc.
  Tuck\o/
   

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