<human>:  What are the safety precautions for using a chainsaw?
<bot>: Safety precautions for using a chainsaw include wearing protective gear such as goggles, gloves, and hearing protection; maintaining control of the saw at all times; making sure the saw chain is correctly tensioned; inspecting the chain before use and replacing it when necessary; and avoiding angles greater than 30 degrees when making any cut. Additionally, always use two hands when operating the chainsaw, keep a firm grip on the handle, and be sure to switch the machine off before refuelling or making any adjustments.