c. If damage to the fuel tank is not severe, repair by
5-3. Fuel Tank, Cleaning, Inspection and Repair
welding (para 2-10).
Clean filler cap and screen assembly with
cleaning solvent (Fed.
P-D-680) and dry
5-4. Fuel Tank, Reassembly and Installation
thoroughly with compressed air.
a. Reassembly. Reassemble the fuel tank in the
b. Check fuel tank for cracks, breaks or other
reverse of numerical sequence as illustrated in figure 5-
b. Installation. Refer to TM 10-3930-630-12 and
Be certain tank has been thoroughly
install fuel tank.
flushed before welding procedure is
Section II. CARBURETOR
manifold on the left side of the engine. The accelerator
pedal and the choke are connected to the carburetor by
a. The carburetor is of the single barrel updraft
design, with a single venturi, twin floats and a semi-
concentric fuel bowl to permit operation at extreme
angles without flooding or starving the engine. The fuel
5-6. Carburetor, Removal and Disassembly
supply system is made up of the threaded fuel inlet and
the float chamber. The idle system consists of two idle
a. Adjustment and Removal. Refer to TM 10-3930-
discharge holes, idle air passage, idle adjusting needle,
630-12 for adjustments and removal of the carburetor.
idle jet and fuel pickup passage. The main metering
b. Disassembly. Disassemble the carburetor in
system consists of the venturi, main jet, main discharge,
numerical sequence as illustrated in figure 5-2.
and well vent.
b. The carburetor is mounted below the intake