Carburetor operation and jetting explained


thejunkman

 

Motorcycle carburetor jetting and operation explained!




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      Been rebuilding an 01 KX125 over the past several months, Kustom Kraft replate and such. Im finally getting around to jetting the bike. 

      Current jetting in the bike is a 50 pilot and 180 main and I'm pretty sure that is the standard jetting for the Pre 01 bikes. I'm showing stock jetting for the this bike is 50/360, is this correct? 

      Does anyone have a good starting point for this bike? It'll be running in 500' elevation and 70-90*. I've seen most people are in the 45/350 area? Edit: Bike has FMF Gold series and Shorty exhaust, stock otherwise. 


      Most recent picture of the turd after new fork seals and Tire/Tube. 

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