[. . . ] : This symbol points out actions that you should NOT do to avoid possible damage or accidents. To enjoy this model to its fullest, complete assembly properly, perform maintenance and add optional upgrades as desired. [. . . ] Radio signals will be mixed and there will be loss of control, which could cause accidents. Do not store this model in hot or humid conditions, or in direct sunlight. Do not run your car on ground: · Do NOT install any option parts not made by Kyosho for this model. The plus (+) terminal on some types of batteries is not long enough so please check when purchasing. Adjusts the steering in small increments so the model will run straight. Adjusts the throttle in small increments so the model will not move at neutral. When changing or replacing frequency crystal, please purchase or replace with Futaba AM27MHz or Futaba compatible AM27MHz crystals. Transmitters other than the one included cannot be used with this product. When the LED indicator flashes, replace batteries as soon as possible. Do NOT operate when transmitter and/or receiver batteries are low or else the control of the model will be lost. Low-Speed Needle: Adjusts the amount of fuel flowing into the engine at idle and low speeds. Gently screw in the high-speed needle until it closes (clockwise rotation). [. . . ] Be careful not to squeeze the throttle trigger abruptly while steering. After you become familiar with the controls, practice with high speeds and high speed turns to experience the full potential of the machine. [. . . ]