VOLTAGE WARNING: Before connecting the tool to a power source (receptacle,outlet, etc.) be sure the voltage supplied is the same as that specified on thenameplate of the tool. A power source with voltage greater than that specifiedfor the tool can result in SERIOUS INJURY t o the user - as well as damage tothe tool. If in doubt, DO NOT PLUG IN THE TOOL. Using a power source withvoltage less than the nameplate rating is harmful to the motor.4

Makita 6831D Instruction Manual