Why does the scooter tremble during cold start?

The main reason of motorcycle start-up jitter in cold start-up is the low idle speed in cold start-up, which may be more serious after using throttle. The specific reasons are that the clutch friction plate is excessively worn, the clutch plate is stuck on the pin and the small spring of the clutch plate is damaged.

Solution to the jitter of scooter when it is started;

1, clutch friction plate is excessively worn.

Solution: Repair the chamfers at both ends of the clutch friction plate with a file to increase the chamfers reduced due to wear.

2. The clutch slips on the pin.

Solution: Clean and lubricate the mounting pin of the clutch plate (that is, the pin of the driving plate) and the pin hole on the clutch plate to eliminate the phenomenon that the clutch plate is stuck on the pin.

3. The small spring of the clutch shoe is damaged

Solution: Replace the three small tension springs of the clutch shoe to ensure that the tension of the three small tension springs is equal, thus eliminating the phenomenon that the clutch friction plate and the clutch housing are combined asynchronously.