13-1. FUEL SYSTEM/CARBURETOR/ FUEL PUMP/ FUEL TANK GRAND DINK 125/150 Disconnect the hose at the valve seat. Hose Air Cut-off Valve Body Remove the two screws and the air cut-off valve body. Screws CARBURETOR BODY CLEANING Blow compressed air through all passages of the carburetor body. · Make sure that no fuel jet is clogged. Air Cut-off Valve Body A.C.V. ASSEMBLY Install the O-ring onto the air-cut-off valve body and then install the valve body to the carburetor with the two screws. · Install the O-ring with the flat face toward the valve body side. O-ring 13-13