Using the Milwaukee M18 2771-20 Transfer Pump is a breeze. First, connect your M18 battery pack to the splash-proof battery compartment. Then, attach your hoses to the 3/4' brass inlet and outlet connections. Since it's self-priming, you can start the pump and it'll quickly get to work moving water. Keep an eye on the clear view window to check for any blockages. The flow path indicator will also help you understand how the water is moving. When the pump stops moving water, the REDLINK™ Intelligence will automatically shut it off to avoid dry pumping. Remember, this pump is not submersible and is designed only for moving water. For maintenance, make sure to clean the pump after each use to prevent clogs. Also, check the battery regularly and charge it as needed. With proper use and care, this pump will serve you well for a long time.