Air fliter, clean carb, proper jetting, changed oil, powervalve, spark plug, ignition and many other things could be wrong. Please, we need more info.
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2002 Gasgas EC250 (gone not forgotten)
2012 Ktm 300xc
2001 Gasgas EC300
Lifes journey is not to arrive safely at the grave in a well preserved body, But rather to skid in sideways totally worn out shouting holy cow what a ride !!!!
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