Using the Makita HR3001CK is easy. First, choose the right bit for your task and insert it into the tool. Make sure it fits securely. Then, select the appropriate mode - rotation only, hammering with rotation, or hammering only - using the recessed hammer - function selector. You can adjust the speed with the variable speed trigger to match your job. When drilling, hold the tool firmly with the side handle and use the vibration - absorbing back handle for comfort. For overhead work, take extra care to maintain balance. Remember to use the depth gauge if you need to drill to a specific depth. When you're done, turn off the tool and unplug it. For maintenance, keep the tool clean and free of dust. You can use the optional Makita Dust Attachment to reduce dust. Check the brushes regularly as they have an extended life, but still need to be monitored. If the bit binds, the torque - limiting clutch will protect the gears, but you should stop using the tool and remove the bit safely. Store the tool in the provided case to keep it in good condition.