TM 5-4240-501-148PCARBURETIONVacu-JetVACU-JET CARBURETORSFig. 59 - Vacu-Jet CarburetorCarburetor and Tank AssemblyRemove the carburetor and fuel tank as one unit, beingcareful not to bend the governor linkage or spring. Onmodels equipped with a stop switch, remove the groundwire. After removal of the carburetor from the fuel tank,inspect the tank for deposits of dirt and/or varnish andmounting surfaces. Tank should be cleaned in solvent.ThrottleCast throttles, Fig. 60, Illustration 1, are removed bybacking off the idle speed adjusting screw until thethrottle clears the retaining lug on the carburetor body.Fig. 61.Stamped throttles, Fig. 60, Illustration 2, are removed byusing a Phillips screw driver to remove the throttle valvescrew. After removal of the valve, the throttle may belifted out. Reverse procedure to install. Fig. 62.Illus. 1Illus. 2Fig. 60 - Throttle TypesFig. 61 - Removing Old Style ThrottlesFig. 62 - Removing and InstallingNew Style ThrottlesFuel PipeThe fuel pipe contains a check ball and a fine meshscreen. To function properly, the screen must be cleanand the check ball free. Fig. 63. Replace pipe if screenand ball cannot be satisfactorily cleaned in carburetorcleaner. DO NOT LEAVE CARBURETOR IN CLEANERMORE THAN 1/2 HOUR WITHOUT REMOVINGNYLON PARTS. Nylon fuel pipes, Fig. 64, Illustration 1,are remove and replaced with a 9/16" 6 point socket.Fig. 63. Brass fuel pipes, Illus. II, are removed byclamping the pipe in a vise and prying out as shown inFig. 65.Fig. 63 - Fuel Pipes18
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