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If my memory serves me properly that's an old 'flat head' briggs motor. Set your float. There is a tab on the floats. When you remove the carburetor float bowl set the floats to set parallel to the edge of the float bowl mating surface of the carb. This is common with new carbs oddly enough, I think briggs calls it a tang. It's metal and the floats ...


1

The 1998 XL650 has a fuel petcock that has a safety feature on it, as do many other bikes of the gravity feed carb era from about 1980 to present. Since you are running an XR650 you should not have the vacuum line. There is a vacuum line that runs from the manifold side of the carb to the petcock on the XL650. When the engine is turned over and creates ...


2

An air screw on a Keihin PWL26 effects the idle circuit of the carburetor. The idle circuit pull through the pilot jet exclusively. The pilot jet typically can deliver no more than 15% of the overall fuel when the throttle is wide open. The claim of 15% is based upon the inside diameter of the pilot jet and the inside diameter of the main jet. The air ...



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