Using the DeWalt DCCS670B chainsaw is straightforward. First, make sure you have a compatible 60V MAX* battery (not included). Attach the battery to the chainsaw. Before starting, check the oil level in the auto - oiling system and refill if needed using the quarter - turn oil cap. Use the tool - free chain tensioning and bar tightening knob to ensure the bar is properly clamped. When cutting, hold the chainsaw firmly and keep a stable stance. The chain brake is there to protect you from kickback, so be aware of its location and function. For maintenance, regularly clean the chainsaw after use. Check the chain for wear and replace it if necessary. Keep the bar lubricated with the auto - oiling system. Remember, this chainsaw comes with a 3 - year limited warranty, a 1 - year free service contract, and a 90 - day money - back guarantee. If you have any issues, contact the manufacturer for support.