TM 5-4240-501-14&PCARBURETIONCross-Over Flo-JetInspectionCheck idle and high speed needle valves for burrs,grooves or bent needle tips. Reject if damaged, Fig.101. Check float for fuel in float, damage or leaks. If itcontains fuel or is crushed it must be replaced. Ifcarburetor leaks with new inlet needle valve, replace inletneedle seat. See next paragraph.Fig. 101Replacing 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. 102. Continue turning carburetorbody drawing seat out. Leave seat fastened to screw.Insert new seat #231019 into carburetor body. (Seat hasstarting lead.)Fig. 102 - Replacing Float Valve SeatPress new seat flush with body using screw and old seatas a driver. See Fig. 102. Use care to insure seat is notpressed below body surface or improper float to floatneedle valve contact will occur. Install float valve asshown in Fig. 103.Fig. 103 - Float Needle ValveChecking Float LevelWith float needle valve, float and float hinge pin installed,hold carburetor upside down. The float should beparallel to the bowl mounting surface. If not, bend tangon float until they are parallel. DO NOT PRESS ONFLOAT TO ADJUST, Fig. 104.Fig. 104 - Checking Float LevelRepair CarburetorUse new parts where necessary. Always use newgaskets. Old gaskets take a set or harden and may leak.Carburetor repair kits are available, see illustrated partslist for part numbers. These carburetors use a viton tipfloat needle and a pressed-in needle seat. The seatdoes not need replacement unless the seat is damagedor leaks with a new float needle.28
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