Using your Milwaukee 2666-20 M18 Impact Wrench is a breeze. First, make sure your REDLITHIUM battery is fully charged and inserted correctly. To start working, simply hold the tool firmly and pull the variable speed trigger. You can adjust the speed according to your needs, whether you're driving lag bolts or loosening nuts. When changing sockets, use the one-handed feature on the 1/2-inch friction ring anvil for quick and easy socket swaps. The LED light on the tool is handy in low - light conditions, just turn it on to improve visibility. As for maintenance, keep the tool clean after each use. Wipe it down with a dry cloth to remove dust and debris. Check the battery regularly for any signs of damage. If the battery starts to show reduced performance, it might be time for a replacement. Avoid overloading the tool. The REDLINK Intelligence helps protect against overload, but it's still important not to push it beyond its limits. Store the tool in a dry and cool place when not in use to extend its lifespan.