Why does the motorcycle stall when starting in first gear?
2 Answers
It may be caused by incomplete clutch disengagement. Here is relevant information about the clutch: Concept: The clutch refers to the separation device between the car engine and the transmission, also known as the clutch. Working principle: The driving part and driven part of the clutch transmit torque through the friction between contact surfaces, or use liquid as transmission medium (hydraulic coupling), or use magnetic transmission (electromagnetic clutch) to temporarily separate and gradually engage. The engine's transmission device needs to deliver different speeds to the wheels at different vehicle speeds.
I've been riding motorcycles for over 20 years, and the issue of stalling at startup occurred most frequently during my beginner days or in cold weather. The key problem lies in the coordination between the throttle and clutch: releasing the clutch too quickly while not giving enough throttle or delaying throttle input, especially in first gear where the torque is high, causes the engine RPM to drop rapidly and stall. When temperatures are low, the engine not being fully warmed up and unstable idling can also easily lead to stalling. It's recommended to start the engine and let it warm up for a while before moving off, slowly finding the friction point when releasing the clutch while gently twisting the throttle to maintain RPM. If this happens frequently, check if the spark plugs are worn out and need replacement, whether the air filter is clogged with dust affecting air intake, and cleaning the carburetor of carbon deposits can significantly help. Regular maintenance shouldn't be neglected—changing the oil and adjusting the idle speed periodically ensures the bike stays in good condition. In short, practice synchronizing throttle and clutch control more, and with patience, you'll achieve smooth starts.
