Using your Milwaukee M18 FUEL 2810-20 Mud Mixer is easy. First, insert the M18 REDLITHIUM™ battery. Then, adjust the 180° handle to your preferred position for maximum comfort. Use the variable speed dial, trigger, or lock-on button to control the mixing speed according to the compound you're working with. When mixing heavy compounds like concrete or mortar, start at a lower speed and gradually increase it. Remember, you can mix up to 15 five-gallon buckets on a single 5.0Ah battery. For maintenance, after each use, clean the mixer thoroughly to prevent buildup. Keep the chuck key in its on-tool storage. If you're not using the mixer for a while, store it in a dry place. Always follow safety guidelines when operating the tool, like wearing appropriate protective gear.