TM 5-4240-501-148P
CARBURETION
One Piece Flo-Jet
Fig. 77 - Nylon Choke Shaft
Inspection
Reject idle and high speed mixture needles if damaged,
Fig. 78. Check float for leakage. If it contains fuel or is
crushed, it must be replaced. Replace float needle, if
worn. If carburetor leaks with new float needle on
carburetors with pressed in float needle seat, refer to
next paragraph.
Fig. 78 - Mixture Needles
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. 80. Continue turning carburetor
body drawing seat out. Leave seat fastened to screw.
Insert new seat #230996 into carburetor body. (Seat has
starting lead.)
NOTE: If engine is equipped with a fuel pump, Install
#231019 seat.
Fig. 79 - Replacing Float Valve Seat
Press new seat flush with body using screw and old seat
as a driver. See Fig. 79. Use care to insure seat is not
pressed below body surface or improper float to float
valve contact will occur. Install float needle valve as
shown in Fig. 80.
Fig. 80 - Float Needle Valve Variations
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