Things You'll Need
Instructions
Remove the cotter pins used to secure the body to the body posts. Lift the body off the chassis and set it to the side.
Clean off any dirt or debris present on the chassis, servo controls, engine area and transmission driveline. Locate and remove the circular foam air filter from the rubber housing, mounted on top of the carburetor assembly.
Wash the foam air filter insert with water and a mild dishwashing detergent. Squeeze the excess moisture from the air filter and allow it to dry.
Saturate the foam air filter with air filter oil or vegetable oil. Squeeze out the excess oil from the air filter and reinstall the foam insert into the rubber housing on the carburetor assembly.
Verify the engine's high-speed and low-speed carburetor adjustments. The small screw located in the center of the carburetor's throttle arm controls the low-speed adjustment, while the larger screw protruding from the side of the carburetor housing controls the high-speed adjustment. Refer to your vehicle's user guide for proper adjustments specifications.
Turn the low-speed adjustment screw clockwise using a small flat head screwdriver until the screw bottoms out. Turn the low-speed adjustment screw counterclockwise one full turn or as recommended by your vehicle's user guide.
Turn the high-speed adjustment screw clockwise using a small flat head screwdriver until the screw bottoms out. Turn the high-speed adjustment screw counterclockwise two full turns or as recommended by your vehicle's user guide.
Check and fill the fuel tank as necessary. Turn on the radio transmitter followed by the vehicle's receiver.
Start the vehicle's engine and slowly operate the vehicle at low speeds for approximately five minutes. After letting the engine achieve the proper temperature, allow the vehicle to idle at a full stop. Count the number of seconds the engine idles before the vehicle stalls.
Restart the engine and pinch the fuel line connected to the carburetor with your fingers. If the engine speed increases dramatically before stalling, turn the low-speed adjustment screw one quarter turn counterclockwise. If the engine immediately stalls without any RPM increase after pinching the fuel line, turn the low-speed adjustment screw clockwise one quarter turn.
Repeat the previous step until the engine speed increases slightly before stalling. Ideally, the vehicle should idle steadily for up to 20 seconds without stalling. Adjusting the carburetor to allow the vehicle to idle longer than 20 seconds before stalling may cause the engine to heat up excessively, causing damage.
Replace the body and cotter pins after completing the adjustment procedure.