What is the primary function of the combined chain brake and front hand guard?

The primary function of the combined chain brake and front hand guard is to stop the chain from rotating and protect the user's hand during operation. This safety feature is crucial because it provides protection against kickback, which can occur if the chainsaw blade encounters an object unexpectedly. When the chain brake is engaged, it rapidly halts the chain's movement, thereby preventing potential injuries to the operator's hand as well as minimizing the risks associated with accidentally activating the saw while it is not in use. The hand guard, as part of this combined feature, also serves to shield the operator's hand from debris, helping to enhance overall safety while using the chainsaw.