Hobbies And Interests
Things You'll Need
Instructions
Fill the fuel tank of the RC about 30 percent full with 20 percent nitro fuel. You can purchase the fuel from any shop dealing in gas powered RC vehicles. Set the throttle trim knob on the RC transmitter to idle, and then attach the glow igniter to the glow plug located on the top of the engine's cylinder. Pull the starter cord to spin the engine and wait for the glow igniter to start the engine running.
Turn the throttle trim knob to high idle. Drive the vehicle, with the glow igniter still attached, until you run out of fuel in order to break-in the engine. The car will run slowly during break-in, reacting slowly when accelerating and emitting a thick blue smoke from the exhaust due to the richness of the fuel-to-air ratio.
Fill the tank to the 30 percent point again with the nitro fuel. Turn the high speed needle located in front of the engine cylinder on the carburetor body clockwise 1/8 turn and start the engine again. This leans the fuel-to-air ratio running to your engine, adding more air to the mix.
Test the new fuel-to-air mixture by running the car for a few minutes. Note the amount of smoke running from the exhaust and the reaction of the vehicle during acceleration. You'll want to keep leaning the engine by turning the high speed needle clockwise slightly until the engine runs smoothly, accelerates quickly without hesitation and the engine exhaust emits a slight whitish smoke. Run the car until you run out of fuel.
Fill the fuel tank full of fuel and run through a complete tank after you've tuned the vehicle. If it runs smoothly and in tune through the entire tank, then you've succeeded and can run the vehicle at its most efficient settings. If the engine quits after half a tank, then turn the high-speed needle back 1/8 turn and try a full tank again as you've leaned the mixture too much and the engine was starved for fuel. Continue to make small adjustments until you can get through an entire tank of fuel without the engine quitting.