TM 5-4240-501-14&PRemove Throttle Shaft and BushingsThrottle shaft should be removed only when necessary toreplace throttle shaft and/or bushings. To removethrottle shaft, use a thin punch to drive out the pinholding throttle stop to the shaft, remove the throttlevalve, then pull out the shaft. Fig. 89.Fig. 89 - Remove Throttle Shaft and BushingsReplace Throttle Shaft BushingsPlace a 1/4" x 20 tap or an E-Z out in a vise. Turncarburetor body so as to thread tap or E-Z out intobushings 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. Ifnot, run a size 7/32" drill through both bushings to act asa line reamer. Install throttle shaft, valve and stop.Fig. 90 - Replacing Throttle Shaft BushingsCARBURETIONTwo Piece Flo-JetRepair CarburetorUse new parts when necessary. Always use newgaskets. Old gaskets take a set or harden and may leak.Carburetor repair kits are available, see illustrated partslist for part number for specific model. Tighten inlet seatwith gasket securely in place, if used, Some float valveshave a spring clip to connect the float valve to the floattang. Others are nylon with a stirrup which fits over thefloat tang. Older type float valves and earlier engineswith 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 inletneedle seat pressed into the upper carburetor body anddoes not need replacement unless damaged.Replacing Pressed-in Float Valve SeatUse a #93029 self-threading screw or remove one self-threading screw from a #19069 flywheel puller and clamphead of screw in a vise. Turn carburetor body to threadscrew into seat. Fig. 91. Continue turning carburetorbody drawing seat out. Leave seat fastened to screw.Insert new seat #230996 into carburetor body. (Seat hasstarting lead.)Fig. 91 - Replacing Float Valve SeatNOTE: If engine or equipment is equipped with a fuelpump, install #231019 seat. Carburetors factoryequipped with fuel pump seat have letter "P" stamped onflange, Fig. 92.Fig. 92 - Flange25
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