Using the Makita XT297T combo kit is a breeze. First, make sure the battery is fully charged before use. For the hammer drill, select the appropriate speed based on your task. The lower speed is great for heavy - duty drilling and driving, while the higher speed is better for lighter tasks. When using the impact driver, choose the right speed setting according to the type of screw and material. The Assist Mode and Tightening Modes can be very helpful in preventing common issues like screw cam - out. When it comes to the reciproc saw, just hold it firmly and guide it along the cutting path. As for maintenance, after each use, clean the tools with a dry cloth to remove dust and debris. Store the tools in the provided tool bag in a dry place. Avoid exposing the tools to extreme temperatures or wet conditions. Regularly check the battery charge level and charge it using the Rapid Optimum Charger when needed. Also, make sure to use only Makita 18V LXT® and Compact Lithium - Ion batteries with the star symbol to ensure the Star Protection feature works properly.