What is overload protection? The overload protection will be activated in the following circumstances: A build up of scarified material around the cutting device. If the material scarified is larger than the motor capacity. Where there is too much resistance against the cutting device. When the circuit breaker has been activated switch off the product and disconnect from the power supply. Let the product cool down and eliminate the cause before using the product again. Related articles Why does the SPX series motor not start? What should I do if my Blower Joe SBJ601E doesn’t turn on? What's the difference between Dethatching and Scarifying? My unit will not start. Why does the motor buzz and fail to run?