Disassemble Carburetor, Small One-Piece Flo-Jet

TM 5-4240-501-148P CARBURETION One Piece Flo-Jet The small one piece Flo-Jet carburetor is illustrated in Figs. 72 and 73 and was used on Model Series 60700, 61700, 80700, 81700, 140700, 141700, 144700 and 145700. These are float feed carburetors with high speed and idle needle valve adjustments. Fig. 74 - Large One Piece Flo-Jet Carburetor Fig. 75 - Large One Piece Flo-Jet Carburetor The large one piece Flo-Jet carburetor is similar to the small one piece Flo-Jet. The main difference is that the high speed needle is below the float bowl. See Figs. 74 and 75. Repair procedures for small and large Flo-Jet carburetors are similar except for location of adjusting needles. Disassemble Carburetor, Small One-Piece Flo-Jet Remove idle and high speed adjusting needles. Remove bowl nut and float bowl. Use screw driver to remove nozzle. Remove float pin to remove float and float needle. Use a large wide screw driver to remove float valve seat. Disassemble Carburetor, Large One-Piece Flo-Jet Remove idle mixture needle. Remove high speed needle valve assembly from float bowl and remove float bowl. Use a thick blade screw driver to remove nozzle, then remove jet from top of carburetor. Remove float pin to remove float and float needle. Disassemble Continued, Small and Large One-Piece Flo-Jet If necessary to remove choke shaft, venturi or throttle shaft, proceed in following sequence. Pry out welch plug. Remove choke valve. On carburetors with nylon choke shafts, remove choke valve as shown in Fig. 78. Venturi can now be removed, Fig. 77. (Choke-A-Matic large carburetors have a plate stop pin which must be pressed out to remove venturi.) To check for throttle shaft wear, refer to Two Piece Flo-Jet for procedure for checking. Fig. 76 - Repair Carburetor 21