Remove Throttle Shaft and Bushings

TM 5-4240-501-14&P Remove Throttle Shaft and Bushings Throttle shaft should be removed only when necessary to replace throttle shaft and/or bushings. To remove throttle shaft, use a thin punch to drive out the pin holding throttle stop to the shaft, remove the throttle valve, then pull out the shaft. Fig. 89. Fig. 89 - Remove Throttle Shaft and Bushings Replace Throttle Shaft Bushings Place a 1/4" x 20 tap or an E-Z out in a vise. Turn carburetor body so as to thread tap or E-Z out into bushings enough to pull bushings out of body, Fig. 90. Press new bushings into carburetor body with a vise. Insert throttle shaft to be sure it is free in the bushings. If not, run a size 7/32" drill through both bushings to act as a line reamer. Install throttle shaft, valve and stop. Fig. 90 - Replacing Throttle Shaft Bushings CARBURETION Two Piece Flo-Jet Repair Carburetor Use new parts when necessary. Always use new gaskets. Old gaskets take a set or harden and may leak. Carburetor repair kits are available, see illustrated parts list for part number for specific model. Tighten inlet seat with gasket securely in place, if used, Some float valves have a spring clip to connect the float valve to the float tang. Others are nylon with a stirrup which fits over the float tang. Older type float valves and earlier engines with fuel pumps have neither spring or stirrup. A viton tip float valve is used on later models of the Flo- Jet carburetor. These needles are used with the inlet needle seat pressed into the upper carburetor body and does not need replacement unless damaged. Replacing Pressed-in Float Valve Seat Use a #93029 self-threading screw or remove one self- threading screw from a #19069 flywheel puller and clamp head of screw in a vise. Turn carburetor body to thread screw into seat. Fig. 91. Continue turning carburetor body drawing seat out. Leave seat fastened to screw. Insert new seat #230996 into carburetor body. (Seat has starting lead.) Fig. 91 - Replacing Float Valve Seat NOTE: If engine or equipment is equipped with a fuel pump, install #231019 seat. Carburetors factory equipped with fuel pump seat have letter "P" stamped on flange, Fig. 92. Fig. 92 - Flange 25