robbo Posted September 16, 2009 Report Share Posted September 16, 2009 Hi, I'm sure this topic has been covered before but I can't find it so does anyone know a good starting point for jetting a keihin carb for a 125 pro? The carb is off a 300 pro so will I also need to change the silde which is currently a 3.5 and the needle which is currently a jjh? Any recommendations / experiences would be much appreciated Cheers, Mark Quote Link to comment Share on other sites More sharing options...
benbeta23 Posted September 16, 2009 Report Share Posted September 16, 2009 (edited) the 3.5 slide will be fine, as the 300's should be using a 3 slide instead. the needle will be perfect, jetting will be fine also, i used to use standard jetting on my old 125 & it run perfect, to be honest i wouldn't change the jetting as long as the bike runs ok. What main Jet & pilot jet is in the carb at the moment? Edited September 16, 2009 by GasGasben Quote Link to comment Share on other sites More sharing options...
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