TM 5-4240-501-148PCARBURETIONPULSA-JETPULSA-JET CARBURETORSFig. 41 - Pulsa-Jet CarburetorCarburetor and Tank AssemblyRemove the carburetor and fuel tank as one unit, beingcareful not to bend the governor linkage. On modelsequipped with a stop switch, remove the ground wire.Fig. 42.Fig. 42 - Removing Ground WireAfter removal of the carburetor from the fuel tank,inspect the tank for deposits of dirt and/or varnish.ThrottleCast throttles, Fig. 43, Illustration 1, are removed bybacking off the idle speed adjustment screw until thethrottle clears the retaining lug on the carburetor body,Fig. 44.Stamped throttles, Fig. 43, Illustration 2, are removed byusing a Phillips screw driver to remove the throttle valveand screw. After removal of the valve, the throttle maybe lifted out, Fig. 45. Reverse procedure to install. Fig.44.Fig. 43 - Throttle TypesFig. 44 - Removing Cast ThrottleFig. 45 - Removing Stamped ThrottleSome carburetor models have a spiral in the carburetorbore. To remove, fasten carburetor in a vise withsmooth jaws about half an inch below top of jaws. Graspspiral firmly with a pair of pliers, as shown, Fig. 46.Place a screw driver under ledge of pliers. Using edgeof vise, push down on screw driver handle to pry outspiral, Fig. 46. Inspect gasket surface of carburetor.Repair if mounting surface is damaged.When inserting spiral, top must be flush to 1/32" (.8 mm)below carburetor flange, and spiral parallel with fuel tankmounting surface, Fig. 46.14
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