A) Check that the lever located at the back of the machine is set to "slow" (or "snail").
B) Check that the battery voltage, with the engine at half throttle, is above 13.5V.
If the value continues to be lower, we kindly invite you to contact our 24-hour assistance service through the following link: https://support.pagani-geotechnical.com/hc/it
If you prefer to receive assistance during office hours, please fill out the form available at the following link: https://support.pagani-geotechnical.com/hc/it/requests/new