TM 10-3930-653-14&P 4-5-4-1.  REMOVAL AND INSTALLATION (1)  Remove air duct assembly of air cleaner. (2)  Remove fuel pipe. (3)  Remove vacuum control tube. (4)  Remove accelerator and choke wires. (5)  Remove carburetor. (6)  Install in reverse sequence of removal. 4-5-4-2.  DISASSEMBLY To remove  nuts  and  screws,  use  suitable  wrenches and   screw   drivers,   taking   care   not   to   scratch   parts. Disassembled components should be placed in order for proper reassembly. (1)  CARBURETOR DISASSEMBLY (1)  Remove throttle return spring. (2)  Remove choke wire holder and throttle wire guide. (3)  Remove start connecting rod. (4)  Remove  pump  connecting rod and pump arm. (5)      Remove   throttle   shaft   set   nut,   and   remove   1st throttle lever, 1st throttle arm and starting throttle lever. (6)  Remove air horn. (7)  Remove body from flange set. (2)  BODY (1)  Remove the four screws holding the float cover. (2)  Remove the float cover and gasket. (3)      Remove   the   float   pin   collar,   float   and   float   valve assembly. (4)    Release    union    bolt      and      take   off   gasket,   fuel connector assembly, strainer and fuel connector gasket. (5)  Loosen float valve seat and take it off together with float valve seat gasket. (6)  Remove main air bleed and take out small venturi. (7)  Remove slow jet and slow air bleed. (8)    Remove  pump  outlet  valve  plug  and  pump  nozzle plug. Fig. 4-118.  Carburetor. (9)      Take   out   weight   and   ball   of   pump   outlet   valve. When installing, place ball on inner side. (10)  Take out pump strainer clip at pump cylinder base and take out strainer and ball of inlet valve. (11)      Take   off   main   passage   plug   and   remove   main passage plug and remove main jet, respectively. (2)  AIR HORN (1)  Remove choke valve connecting rod. (2)      Releasing   choke   valve   set   screw,   remove   choke valve. 4-68