TM 5-4240-501-148PCARBURETIONVacu-JetFig. 64 - Replacing Nylon Fuel PipeFig. 65 - Removing Brass Fuel PipeTo install brass fuel pipes, remove the throttle, ifnecessary, and place the carburetor and pipe in a vise.Press the pipe into the carburetor until it projects 2-9/32"(57.9 mm) to 2-5/16" (58.7 mm) from carburetor gasketsurface. Fig. 66.Fig. 66 - Replacing Brass Fuel PipeNeedle Valve and SeatRemove needle valve assembly to inspect. If carburetoris gummy or dirty, remove seat to allow better cleaning ofmetering holes. CAUTION: Do not change metering holesizes. Fig. 67.Fig. 67 - Metering HolesChoke-A-Matic LinkageDisassembleTo remove choke link, remove speed adjustment leverand stop switch insulator plate. Work link out throughhole in choke slide. Fig. 68.Fig. 68 - Choke-A-Matic LinkageRepairReplace worn or damaged parts. To assemblecarburetor using choke slide, Fig. 68, place choke returnspring and three washers on choke link. Push choke linkthrough hole in carburetor body, turning link to line upwith hole in choke slide. Speed adjustment lever screwand stop switch insulator plate should be installed as oneassembly after placing choke link through end of speedadjustment lever.Adjust Choke-A-Matic LinkageThe following covers Choke-A-Matic parts installed onand as a part of the carburetor assembly. See Section 4for Choke-A-Matic remote controls. To check operationof Choke-A-Matic linkage, move speed adjustment leverto CHOKE position. If choke slide does not FULLYclose, bend choke link. Fig. 69. Speed adjustment levermust make good contact against stop switch.19
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