Using the Milwaukee M18 FUEL 2724 - 21HD blower is easy. First, make sure the battery is fully charged. Insert the M18 REDLITHIUM HIGH OUTPUT XC8.0 battery into the blower. To start, simply pull the variable - speed trigger. You can adjust the speed according to your needs. Use the high setting for large areas with lots of debris, and the low setting for more delicate tasks like cleaning flower beds. If you need to use it continuously at full throttle, press the lock - on button. When you're done, turn it off and remove the battery. For maintenance, keep the blower clean. Wipe it down after each use to remove dust and debris. Store the battery in a cool, dry place. And always use compatible chargers to charge the battery. This will help keep your blower in good condition and ensure it works well for a long time.