What is the charge of the gasoline engine in the wipe machine?
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HelloThe head of the gasoline engine is not controlled1 see throttle screws are not loose2 to see if the carburetor is damaged [car problems], ask the car master. 4S shop professional technicians, 10 minutes to solve. ]
The throttle is out of control. This is generally called a speed coaster, mainly due to the malfunction of the speed governing device. Usually the speed of the arm screw loose or speed gear damage.