Pedal motorcycle start jitter fault is a common operation fault, the fault phenomenon is, when increasing the throttle opening, slowly improve the engine working speed, the centrifugal clutch begins to engage, the motorcycle to overcome the starting resistance to start, then the motorcycle driver will feel the body jitter, with the engine working speed increase, motorcycle jitter gradually aggravated, Until the motorcycle speed increases, motorcycle jitter will be reduced, motorcycle normal driving, motorcycle jitter is completely disappeared.

Because the motorcycle jitter fault is produced when the motorcycle starts, so it is called the motorcycle start jitter fault.

When the motorcycle start jitter fault is very light, it has no great impact on the operation of the motorcycle. When the motorcycle start jitter fault is heavy, it not only makes the rider feel very uncomfortable, the driver has a sense of vibration in both hands, and sometimes can also hear the transmission box with a large working noise and the transmission belt jitter slap the transmission box side cover clap.

According to the actual maintenance situation, the motorcycle starting jitter fault is caused by the lack of normal maintenance of the motorcycle transmission system.

Some maintenance personnel think that the motorcycle transmission system structure is simple, usually without maintenance. The neglect of the maintenance of the motorcycle transmission system eventually leads to the motorcycle starting jitter failure.

The common causes of motorcycle starting jitter failure are:

The first situation: motorcycle driving system driven belt wheel between the moving disc and the fixed disc poor lubrication, so that the axial resistance of the moving disc increases, can not be under the action of the spring and the fixed disc tightly clamped triangle belt, so that the active pulley drag driven belt wheel rotation, the triangle belt is suddenly tight and light, produce sliding.

Not only does the triangle belt produce jitter flapping the transmission box side cover emit working noise, when the centrifugal clutch is put into work, the power is transferred to the rear wheel, resulting in the motorcycle starting jitter fault.

The second case: the chamfer at both ends of the clutch friction plate on the centrifugal clutch is too small. After the motorcycle is driven for a period of time, the clutch friction plate is worn and the chamfer is lost.

When the centrifugal clutch is put into work, the clutch friction plate under the action of centrifugal force overcomes the tension of the spring and engages the clutch shell. Because the two ends of the clutch friction plate lose champhering, the clutch friction plate and the clutch shell can not be engaged smoothly, power transfer to the rear wheel, resulting in the motorcycle starting jitter failure.

The third case: Clutch friction plate working surface with oil, some clutch grease injection too much, the clutch in the work, grease under the action of high temperature and centrifugal force, along the axial direction of the outflow, and then splash to the clutch shell and clutch friction plate and clutch shell engagement will produce abnormal sliding, power transfer to the rear wheel, resulting in motorcycle start jitter fault.

In the elimination of motorcycle start shaking fault, whether caused by that kind of reason, it is best to carry out a comprehensive inspection and maintenance, to ensure that motorcycle start shaking fault no longer occurs.

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