Using your DeWalt 60V MAX* 18-inch 3.0Ah Brushless Cordless Chainsaw is easy. First, charge the DCB609 DEWALT FLEXVOLT battery using the DCB115 charger. Once charged, insert the battery into the chainsaw. Before starting, make sure the chain is properly tensioned using the tensioning tool and the bar sheath is removed. When cutting, hold the chainsaw firmly with both hands. Use the onboard wrench for quick chain adjustment if needed. Always wear appropriate safety gear, like goggles and gloves. The chain brake is there to protect you from kickback, so be aware of its function. For maintenance, keep the chain lubricated with the auto - oiling feature. After each use, clean the chainsaw and check the chain for wear. Store it in a dry place and keep the battery charged when not in use. This will help your chainsaw last a long time and perform at its best.