TM 5-4240-501-14&PFig. 122 - Fuel PumpTo Install Fuel PumpPlace a liberal supply of grease or gear lubricant on theportion of fuel pump lever that contacts the crankshaft.Fig. 123. Assemble fuel pump to cylinder using newgasket. Keep mounting face of fuel pump parallel tomounting face of cylinder while inserting lever of fuelpump. The lever must ride in the narrow groove which islocated on the crankshaft between the gear and thecounter- weight. Revolve crankshaft to be sure that fuelpump is correctly installed. Assemble fuel pipe fromoutlet of carburetor. Fuel supply pipe should beconnected to the inlet of the fuel pump.Fig. 123 -- Installing Fuel PumpCARBURETIONFuel Pumps, Automatic Chokes, Two Piece Flo-JetAUTOMATIC CHOKEAutomatic Choke AdjustHold choke shaft so thermostat lever is free. At roomtemperature the screw in the thermostat collar should bein the center of the stops, if not, loosen stop screw andadjust.Loosen set screw on lever of thermostat assembly.Slide lever to right or left on shaft to insure freemovement of choke link in any position. Rotatethermostat shaft clockwise until stop screw strikes tube.Fig. 124. Hold in position and set lever on the thermostatshaft so that choke valve will be held open about 1/8"from closed position. Then tighten set screw in lever.Rotate thermostat shaft counterclockwise until stopscrew strikes the opposite side of tube. Fig. 124. Thenopen choke valve manually until it stops against the topof the choke link opening. The choke valve should nowbe open approximately 1/8" as before.Fig. 124 - Adjust Automatic ChokeCheck position of counterweight lever. With the chokevalve in wide open position (horizontal) the counterweightlever should also be in a horizontal position with free endtoward the right.Operate the choke manually to be sure that all parts arefree to move without binding or rubbing in any position.35
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