Using the Bosch 11321EVS is easy. First, make sure the power is off before you do anything. Attach the appropriate accessory to the SDS - max tool holder. Adjust the variable speed dial according to the material you're working on. For hard materials, use a higher speed; for softer ones, a lower speed will do. When using it, hold the main handle and the auxiliary handle firmly. The articulating auxiliary handle can be adjusted to a comfortable position to reduce fatigue. There's a power light that shows if the power is on, so always check it before starting. The Service Minder light will come on when it's time for maintenance. When the tool is not in use, store it in the carrying case to protect it. Also, keep the cord away from sharp objects to avoid damage. Regularly clean the tool to keep it in good condition. And don't forget to lubricate the moving parts as recommended in the user manual.
