If the driveshaft screw on your YIKONG YK4061 RC Car repeatedly comes loose, the Longitudinal Shaft Female Threaded Cup Screw Shaft M4 (Part No. 26102) may not be properly tightened, or the threads may be worn. Continuous vibration during off-road driving can also cause the screw to loosen over time.
To prevent this, inspect the threads for damage, tighten the screw with the correct hex driver, and apply a small amount of medium-strength thread-locking compound. If the threads are stripped or the screw is deformed, replace the Longitudinal Shaft Female Threaded Cup Screw Shaft M4 immediately to prevent driveshaft movement or power transmission issues.
