Toyota 21100-11420 CARBURETOR Assembly

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To remove the carburetor, start by relieving the tank pressure by removing the fuel tank cap. Then, remove the air cleaner from the carburetor and label all vacuum hoses attached to it. Disconnect the throttle cable and, if applicable, the Throttle Valve (TV) cable. Label and disconnect all vacuum hoses and fittings, as well as the fuel line from the carburetor. Label and unplug the electrical connectors attached to the carburetor. Remove the mounting fasteners, EGR modulator bracket, and lift the carburetor from the intake manifold, making sure not to remove the cold mixture heater. Stuff a shop rag into the intake manifold openings. To install, use a gasket scraper to remove any gasket material and sealant from the cold mixture heater and carburetor (if being reinstalled). Clean the mating surfaces with lacquer thinner or acetone. Place a new gasket on the cold mixture heater and position the carburetor on it. Attach the EGR modulator bracket and install the mounting fasteners, tightening them in a criss-cross pattern. The remaining steps are the reverse of removal. Finally, check and adjust the idle speed if necessary, and start the engine to check for fuel leaks.

When diagnosing carburetor problems, it may be necessary to start and run the engine without the air cleaner, which can potentially lead to backfires.