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
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