FUEL SYSTEM AUXILIARY FUEL TANK MOUNTING BOLT AUXILIARY FUEL TANK (V45 MAGNA) Remove the seat, main fuel tank and side covers. Remove the regulator/rectifier. Disconnect the battery negative cable, then positive cable and remove the battery. Remove the rear wheel (page 17-3). Remove rear fenders A and B. Detach the auxiliary fuel tank hose from the fuel pump. Remove the auxiliary fuel tank mounting bolt and tank. Install the auxiliary fuel tank in the reverse order of removal. FUEL HOSE REGULATOR/RECTIFIER AUTOMATIC FUEL VALVE (V45 SABRE) WARNING Do not allow flames or sparks near gasoline. Wipe up spilled gasoline at once. Turn the manual valve ON. Stop the engine and place a container under the fuel line. Remove the fuel tube from the carburetor. Inspect the fuel tube for fuel flowing out. Drain the remaining fuel in the fuel valve and fuel tube (approx. 5-10 cc). If the fuel flow stops, the automatic fuel valve is operating normally. If the fuel flow does not stop, clean the vacuum tube. AUTOMATIC FUEL VALVE MANUAL FUEL VALVE VACUUM TUBE AUTOMATIC FUEL VALVE HAND VACUUM PUMP/GAUGE ST—AH-260—MC7 OR A973X-041—XXXXX U.S.A. ONLY Disconnect the vacuum tube from the intake port and apply vacuum with a vacuum pump. The valve is operating normally if fuel flows out of the tube when vacuum is applied and fuel stops flowing out when the vacuum pump is disconnected. If the valve does not operate normally: • Inspect for clogging and clean the valve. • Blow air through the valve from the inlet side to set the flat diaphragm in its original position. 68 Date of Issue: May, 1982 © HONDA MOTOR CO., LTD. 4-20