The automatic start lacks power.

Because the vent hole of the fuel tank cover is blocked, the fuel tank switch, fuel filter and the oil pipe between the fuel tank and carburetor are partially blocked, which can not meet the required oil supply, resulting in too lean mixture and weak engine work. Due to the long-term use of air filter, the air is insufficient, and the combustible mixture will be too rich, which will reduce the engine power.

Security risks:

1. Check whether the air filter is blocked and remove it if necessary.

2. Check the throttle opening. When the accelerator pedal is fully depressed, the throttle should be fully opened. Otherwise, adjust the cable or study the pedal position sensor and throttle position sensor.