1. First check whether the oil level sensor in the oil tank is damaged or whether the height of the float deviates.

2. The height deviation of the float can be adjusted by breaking the iron wire of the float. If the sensor is damaged, it can only be replaced with a new one.

3. If there is nothing wrong with the oil level sensor after inspection, there may be something wrong with the oil gauge. In this case, only the instrument can be replaced.