Yes, motorcycles typically require both throttle cables for proper operation. The throttle cables are essential components that connect the throttle grip on the handlebars to the throttle body or carburetor on the engine.
In most motorcycles, there are two throttle cables: the "pull" cable and the "return" cable. The pull cable is responsible for opening the throttle when you twist the throttle grip, allowing more air and fuel to enter the engine for increased power. The return cable, on the other hand, helps to close the throttle when you release the grip, allowing the engine to return to idle or a lower RPM.
Having both throttle cables provides redundancy and an added level of safety. If one cable were to break or become stuck, the other cable ensures that you can still control the throttle and operate the motorcycle safely. It helps prevent situations where the throttle is stuck in an open or closed position, which could be dangerous.
In some modern motorcycles with electronic throttle control (ride-by-wire systems), the physical throttle cables may be replaced by sensors and electronic actuators. However, these systems still typically incorporate redundant sensors and safety measures to ensure proper operation.
It is important to regularly inspect and maintain the throttle cables on your motorcycle to ensure they are in good condition and functioning properly. If you notice any issues or signs of wear, it is recommended to have them inspected and replaced by a qualified technician.