5. FUEL SYSTEM MOVIE SYSTEM Spring AIR CUT-OFF VALVE DISASSEMBLY Disconnect the vacuum tube from the air cut-off valve. Remove the two screws to remove the air cut-off valve cover, spring and vacuum diaphragm. Vacuum Diaphragm Air Cut-off valve Cover ASSEMBLY Screws Install the vacuum diaphragm onto the carburetor. Install the spring and air cut-off valve cover and then tighten the two screws. · Be sure to set the vacuum diaphragm lip into the groove on the carburetor. · When installing the air cut-off valve cover, make sure that the vacuum diaphragm is properly installed. Air Cut-off valve Cover VACUUM CHAMBER DISASSEMBLY Remove the two vacuum chamber cover screws and the cover. Vacuum Chamber Cover Remove the spring and vacuum diaphragm/ Spring piston. Vacuum Diaphragm/Piston 5-5