5. FUEL SYSTEM ATV 300/250 ASSEMBLY Install the slow jet. Install the needle jet, needle jet holder and main jet. Install the throttle stop screw and air screw Install the spring, diaphragm and O-rings. · When installing the air screw, return it to the original position as noted during removal · After the carburetor is installed, be sure to perform the Exhaust Emission Install the float valve, float and float pin. 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: 14.8 mm (0.592 in) When adjusting, carefully bend the float pin. Check the float for proper operation. Install the baffle plate, aligning the jet holder groove with the carburetor tab and then install the float chamber. INSTALLATION Reverse the " CARBURETOR REMOVAL" Baffle Plate procedures. AIR CLEANER Refer to the "AIR CLEANER" section in the chapter 3 for air cleaner replacement and cleaning. 5-12