Using the DeWalt DWE46103 grinder is quite straightforward. First, make sure you've attached the side handle securely for better control. You can choose between the Type 27 and Type 1 guards according to your specific task. Plug in the corded power source and use the sliding switch to turn it on. The lock - on switch is handy for continuous use. When working, keep in mind that the e - clutch® will protect the tool if the wheel gets pinched or stalls. Also, the dust ejection system helps keep the tool clean. For maintenance, after each use, unplug the grinder and clean it gently to remove dust and debris. Check the cords regularly for any signs of damage. And remember to store it in a dry place. If you notice any issues like overheating or unusual noises, stop using the tool immediately and consult the DeWalt support team.