- 1). Remove the carburetor from the motorcycle. Disconnect the fuel lines from the carburetor, allowing any fuel left in the lines to drain into a container. Unscrew any hose clamps that secure the air box to the carburetor and the carburetor to the motor. Push the air box boots away from the carburetor and pull the carburetor off of the motor.
- 2). Set the carburetors onto a clean work area. Remove the float bowl drain screws from the bottom of the carburetor with a flat screwdriver. Allow any remaining fuel in the float bowls to drain into a container. Set the float bowl drain screws aside.
- 3). Disassemble the carburetors, removing the float bowls, floats, jets, needles, and diaphragms. Place these in individual plastic bags to prevent them from being misplaced.
- 4). Prepare a cleaning solution of 6 parts water to 1 part lemon juice in a large metal pot. Heat the solution to a rolling boil with an electric hot plate. Once the solution is boiling, place the disassembled carburetor assembly and float bowls into the pot and allow it to soak for thirty minutes.
- 5). Pull the carburetor assembly and float bowls from the lemon solution with a pair of tongs and rinse thoroughly with clean water. Using a toothbrush, scrub the inner and outer surfaces of the carburetors to remove any remaining debris or buildup. Rinse again with fresh, clean water. Dry the carburetor and float bowls by blowing compressed air through the carburetor body and fuel passages.
- 6). Clean the carburetor jets with compressed air to clear the passages. Remove any remaining debris with a thin piece of wire.
- 7). Reassemble the carburetors, installing the jets, needles and floats. Replace any damaged or worn gaskets.
- 8). Install the carburetor on the motorcycle, tightening any hose clamps to prevent air leaks. Reattach the fuel lines to the carburetor.
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