5. FUEL SYSTEM Mongoose/KXR 90/50 CARBURETOR CLEANING Blow compressed air through all passages of the carburetor body. FLOAT/FLOAT VALVE INSPECTION Inspect the float valve seat for wear or damage. Inspect the float for damage or fuel level inside the float chamber. O-ring FUEL RESERVOIR O-RING CHECK Remove the O-ring. Inspect the check the O-ring for damage. Replace with new ones if necessary FLOAT LEVEL INSPECTION Turn the carburetor upside down so that the float will go down to make the float valve contact the float valve seat. Then slowly tilt the carburetor and measure the float level with the float level gauge while the float pin just contacts with float valve. Float Level: 8.0mm 5-14