SAFETY SYSTEM - Two safety switches and manual mechanical brakes ensure the safe start of the machine and protect your safety. Before starting the chainsaw, make sure that the mechanical brake has been released, otherwise it will not start. AUTOMATIC OILING - The automatic lubrication system has perfect functions and is easy to lubricate the chain. When using the machine for the first time, please add an appropriate amount of chain saw lubricants to make the machine idle for 20-30 seconds. This way can lubricate the chain and gear, thus protecting the machine. The TACKLIFE GCS15A 18-Inch Corded Chainsaw offers a 15Amp powerful motor for large branches and demanding cuts with an 18’’ Oregon low-kickback bar. It offers tool-free chain tensioning for quick and easy chain adjustments, along with an automatic oiling system that ensures constant bar and chain lubrication. It has a clear window so you can monitor the oil levels and also has a chain brake feature for optimal safety during usag