12. CARBURETOR VITALITY 50 Main Jet Needle Jet holder FLOAT CHAMBER ASSEMBLY Install the main jet and needle jet holder. Install the air screw and throttle stop screw according to the rotations recorded. If the air screw must be replaced, be sure to perform the air screw adjustment again. Throttle Stop Screw Air Screw Float Pin Install the float valve, float and float pin. Tighten the float screw securely. FLOAT LEVEL INSPECTION Slightly tilt the carburetor and measure the float level with the float valve just connecting the float arm. Float Level: 8.6mm Replace the float if the level is out of the specified level range. Install the O-ring. Check the operation of the float and install the float chamber. Tighten the screws. 12-12